引言:AI技术在美妆行业的革命性变革

在数字化时代,潮流美妆行业正经历着前所未有的转型。传统的”一刀切”产品模式已无法满足消费者日益增长的个性化需求。AI技术的引入,为美妆品牌提供了精准洞察用户需求、提供定制化解决方案的全新可能。通过机器学习、计算机视觉、自然语言处理等技术,美妆企业能够实现从肤质分析到产品推荐的全链路智能化服务,不仅提升了用户体验,也显著提高了转化率和客户忠诚度。

一、AI技术在美妆个性化定制中的核心应用

1.1 智能肤质分析系统

智能肤质分析是AI在美妆领域最基础也最重要的应用之一。通过深度学习算法,系统能够从用户上传的照片中精准识别肤质类型、问题区域和潜在风险。

技术实现原理:

  • 使用卷积神经网络(CNN)对皮肤图像进行特征提取
  • 通过图像分割技术识别不同皮肤区域(如T区、U区)
  • 结合光照校正算法消除环境因素影响

完整代码示例:

import tensorflow as tf
import cv2
import numpy as np
from tensorflow.keras.applications import MobileNetV2
from tensorflow.keras.layers import Dense, GlobalAveragePooling2D
from tensorflow.keras.models import Model

class SkinAnalyzer:
    def __init__(self):
        # 加载预训练的MobileNetV2模型作为特征提取器
        self.base_model = MobileNetV2(weights='imagenet', 
                                    include_top=False,
                                    input_shape=(224, 224, 3))
        
        # 冻结基础模型的前100层
        for layer in self.base_model.layers[:100]:
            layer.trainable = False
            
        # 添加自定义分类层
        x = self.base_model.output
        x = GlobalAveragePooling2D()(x)
        x = Dense(512, activation='relu')(x)
        predictions = Dense(6, activation='softmax')(x)  # 6种肤质分类
        
        self.model = Model(inputs=self.base_model.input, outputs=predictions)
        
        # 编译模型
        self.model.compile(optimizer='adam',
                          loss='categorical_crossentropy',
                          metrics=['accuracy'])
    
    def preprocess_image(self, image_path):
        """预处理输入图像"""
        img = cv2.imread(image_path)
        img = cv2.resize(img, (224, 224))
        img = cv2.cvtColor(img, cv2.COLOR_BGR2RGB)
        img = img.astype('float32') / 255.0
        return np.expand_dims(img, axis=0)
    
    def analyze_skin(self, image_path):
        """分析肤质并返回结果"""
        processed_img = self.preprocess_image(image_path)
        predictions = self.model.predict(processed_img)
        
        # 肤质分类标签
        skin_types = ['干性', '油性', '混合性', '敏感性', '中性', '问题性']
        result_index = np.argmax(predictions[0])
        
        # 获取置信度
        confidence = predictions[0][result_index]
        
        return {
            'skin_type': skin_types[result_index],
            'confidence': float(confidence),
            'all_probabilities': dict(zip(skin_types, predictions[0].tolist()))
        }

# 使用示例
if __name__ == "__main__":
    analyzer = SkinAnalyzer()
    result = analyzer.analyze_skin("user_selfie.jpg")
    print(f"检测结果:{result['skin_type']} (置信度: {result['confidence']:.2%})")

实际应用场景: 用户在品牌APP中上传一张素颜照片,系统在3秒内返回肤质分析报告,包括:

  • 肤质类型(干性/油性/混合性/敏感性/中性/问题性)
  • 皮肤问题识别(痘痘、黑头、细纹、色斑等)
  • 皮肤年龄评估
  • 个性化护肤建议

1.2 面部特征识别与彩妆模拟

AI能够精准识别面部关键点,实现虚拟试妆和彩妆效果预览,这是个性化定制的重要环节。

技术实现原理:

  • 使用dlib或MediaPipe进行面部关键点检测
  • 通过GAN(生成对抗网络)生成逼真的彩妆效果
  • 实时渲染技术实现AR试妆

完整代码示例:

import mediapipe as mp
import cv2
import numpy as np
from PIL import Image, ImageDraw

class VirtualMakeup:
    def __init__(self):
        self.mp_face_mesh = mp.solutions.face_mesh
        self.face_mesh = self.mp_face_mesh.FaceMesh(
            static_image_mode=False,
            max_num_faces=1,
            refine_landmarks=True,
            min_detection_confidence=0.5
        )
        
        # 定义彩妆区域对应的面部关键点索引
        self.lips_indices = [61, 146, 91, 181, 84, 17, 314, 405, 321, 375, 291, 409, 270, 269, 267, 0, 37, 39, 40, 185]
        self.left_eye_indices = [33, 7, 163, 144, 145, 153, 154, 155, 133, 173, 157, 158, 159, 160, 161, 246]
        self.right_eye_indices = [263, 249, 390, 373, 374, 380, 381, 382, 362, 398, 384, 385, 386, 387, 388, 466]
        self.face_oval = [10, 338, 297, 332, 284, 251, 389, 356, 454, 323, 361, 288, 397, 365, 379, 378, 400, 377, 152, 148, 176, 149, 150, 136, 172, 58, 132, 93, 234, 127, 162, 21, 54, 103, 67, 109]
    
    def detect_landmarks(self, image):
        """检测面部关键点"""
        rgb_image = cv2.cvtColor(image, cv2.COLOR_BGR2RGB)
        results = self.face_mesh.process(rgb_image)
        
        if results.multi_face_landmarks:
            face_landmarks = results.multi_face_landmarks[0]
            h, w, _ = image.shape
            
            # 提取关键点坐标
            landmarks = []
            for landmark in face_landmarks.landmark:
                x = int(landmark.x * w)
                y = int(landmark.y * h)
                landmarks.append((x, y))
            
            return landmarks
        return None
    
    def apply_lipstick(self, image, landmarks, color=(255, 0, 0), opacity=0.7):
        """应用口红效果"""
        if landmarks is None:
            return image
            
        # 创建透明图层
        overlay = image.copy()
        output = image.copy()
        
        # 获取嘴唇区域的多边形
        lip_points = [landmarks[i] for i in self.lips_indices if i < len(landmarks)]
        
        if len(lip_points) < 3:
            return image
            
        # 将点转换为numpy数组
        lip_points = np.array(lip_points, dtype=np.int32)
        
        # 填充颜色
        cv2.fillPoly(overlay, [lip_points], color)
        
        # 应用透明度
        cv2.addWeighted(overlay, opacity, output, 1 - opacity, 0, output)
        
        return output
    
    def apply_eyeshadow(self, image, landmarks, color=(100, 100, 200), opacity=0.6):
        """应用眼影效果"""
        if landmarks is None:
            return image
            
        overlay = image.copy()
        output = image.copy()
        
        # 左眼眼影
        left_eye_points = [landmarks[i] for i in self.left_eye_indices if i < len(landmarks)]
        if len(left_eye_points) > 3:
            left_eye_points = np.array(left_eye_points, dtype=np.int32)
            cv2.fillPoly(overlay, [left_eye_points], color)
        
        # 右眼眼影
        right_eye_points = [landmarks[i] for i in self.right_eye_indices if i < len(landmarks)]
        if len(right_eye_points) > 10:
            right_eye_points = np.array(right_eye_points, dtype=np.int32)
            cv2.fillPoly(overlay, [right_eye_points], color)
        
        cv2.addWeighted(overlay, opacity, output, 1 - opacity, 0, output)
        return output
    
    def apply_blush(self, image, landmarks, color=(255, 182, 193), opacity=0.5):
        """应用腮红效果"""
        if landmarks is None:
            return image
            
        overlay = image.copy()
        output = image.copy()
        
        # 获取脸颊区域(简化版)
        # 左脸颊:从太阳穴到下巴
        left_cheek = [landmarks[i] for i in [234, 93, 132, 58, 172, 136, 150, 176, 152, 400, 379, 365, 397, 288, 361, 323, 454]]
        left_cheek = [p for p in left_cheek if p is not None]
        
        if len(left_cheek) > 3:
            left_cheek = np.array(left_cheek, dtype=np.int32)
            cv2.fillPoly(overlay, [left_cheek], color)
        
        cv2.addWeighted(overlay, opacity, output, 1 - opacity, 0, output)
        return output
    
    def apply_full_makeup(self, image_path, makeup_styles):
        """应用全套彩妆"""
        image = cv2.imread(image_path)
        landmarks = self.detect_landmarks(image)
        
        if landmarks is None:
            print("未检测到人脸")
            return None
        
        result = image.copy()
        
        # 根据风格应用彩妆
        if 'lipstick' in makeup_styles:
            result = self.apply_lipstick(result, landmarks, 
                                      color=makeup_styles['lipstick']['color'],
                                      opacity=makeup_styles['lipstick']['opacity'])
        
        if 'eyeshadow' in makeup_styles:
            result = self.apply_eyeshadow(result, landmarks,
                                       color=makeup_styles['eyeshadow']['color'],
                                       opacity=makeup_styles['eyeshadow']['opacity'])
        
        if 'blush' in makeup_styles:
            result = self.apply_blush(result, landmarks,
                                    color=makeup_styles['blush']['color'],
                                    opacity=makeup_styles['blush']['opacity'])
        
        return result

# 使用示例
if __name__ == "__main__":
    makeup_app = VirtualMakeup()
    
    # 定义彩妆风格
    daily_style = {
        'lipstick': {'color': (220, 120, 150), 'opacity': 0.6},
        'eyeshadow': {'color': (180, 160, 200), 'opacity': 0.4},
        'blush': {'color': (255, 182, 193), 'opacity': 0.3}
    }
    
    # 应用彩妆
    result = makeup_app.apply_full_makeup("user_photo.jpg", daily_style)
    
    if result is not None:
        cv2.imwrite("makeup_result.jpg", result)
        print("彩妆效果已生成")

实际应用场景: 用户选择”日常通勤”风格,系统自动应用自然的口红、眼影和腮红效果,并实时显示在屏幕上。用户可以调整颜色深浅、更换不同色号,最终确定最适合自己的彩妆方案。

1.3 个性化配方生成

基于肤质分析和用户偏好,AI能够生成个性化的产品配方,包括护肤品组合和彩妆搭配。

技术实现原理:

  • 使用推荐系统算法(协同过滤+内容过滤)
  • 结合成分知识图谱
  • 应用约束满足问题(CSP)求解器

完整代码示例:

import pandas as pd
import numpy as np
from sklearn.metrics.pairwise import cosine_similarity
from sklearn.feature_extraction.text import TfidfVectorizer
import networkx as nx

class PersonalizedFormulaGenerator:
    def __init__(self):
        # 模拟产品数据库
        self.products = pd.DataFrame({
            'product_id': [1, 2, 3, 4, 5, 6, 7, 8, 9, 10],
            'name': ['保湿精华', '控油乳液', '抗衰老面霜', '舒缓精华', '美白精华',
                    '哑光粉底液', '滋润粉底液', '持久口红', '滋润口红', '防水眼线笔'],
            'category': ['skincare', 'skincare', 'skincare', 'skincare', 'skincare',
                        'makeup', 'makeup', 'makeup', 'makeup', 'makeup'],
            'ingredients': ['玻尿酸,甘油,维生素B5', '水杨酸,烟酰胺,锌', '视黄醇,胜肽,胶原蛋白',
                          '积雪草,洋甘菊,神经酰胺', '维生素C,烟酰胺,熊果苷',
                          '硅石,二氧化钛,吸油粉末', '甘油,玻尿酸,荷荷巴油',
                          '蜂蜡,色素,维生素E', '羊毛脂,油脂,色素', '炭黑,聚合物,防水成分'],
            'suitable_skin': ['干性,敏感性', '油性,混合性', '中性,干性', '敏感性,干性', '所有肤质',
                            '油性,混合性', '干性,中性', '所有肤质', '干性,敏感性', '所有肤质'],
            'concerns': ['干燥,缺水', '出油,毛孔', '皱纹,松弛', '泛红,刺激', '暗沉,色斑',
                        '脱妆,油光', '卡粉,干燥', '脱色,干燥', '起皮,唇纹', '晕染,脱妆'],
            'price': [180, 150, 320, 200, 250, 220, 240, 120, 110, 130]
        })
        
        # 成分冲突矩阵(某些成分不能同时使用)
        self.conflict_rules = {
            ('视黄醇', '维生素C'): '建议分开使用,避免刺激',
            ('水杨酸', '视黄醇'): '建议分开使用,避免过度去角质',
            ('烟酰胺', '维生素C'): '可以使用,但建议间隔'
        }
        
        # 肤质-功效映射
        self.skin_concern_mapping = {
            '干性': ['保湿', '滋润', '修复'],
            '油性': ['控油', '收敛', '清爽'],
            '混合性': ['平衡', '分区护理'],
            '敏感性': ['舒缓', '修复', '温和'],
            '问题性': ['治疗', '修复', '预防']
        }
    
    def calculate_similarity(self, user_profile, products):
        """计算用户画像与产品的相似度"""
        # 提取特征
        features = []
        for _, product in products.iterrows():
            # 肤质匹配度
            skin_match = len(set(user_profile['skin_type'].split(',')) & 
                           set(product['suitable_skin'].split(',')))
            
            # 问题匹配度
            concern_match = len(set(user_profile['concerns']) & 
                              set(product['concerns'].split(',')))
            
            # 价格匹配度(用户预算内)
            price_match = 1 if product['price'] <= user_profile['budget'] else 0.5
            
            # 成分偏好(用户偏好天然成分)
            natural_score = 0
            if user_profile.get('prefer_natural', False):
                natural_ingredients = ['甘油', '玻尿酸', '积雪草', '洋甘菊', '维生素C']
                for ing in natural_ingredients:
                    if ing in product['ingredients']:
                        natural_score += 0.2
            
            features.append([skin_match, concern_match, price_match, natural_score])
        
        features = np.array(features)
        user_vector = np.array([
            3,  # 用户肤质匹配期望
            len(user_profile['concerns']),  # 用户问题数量
            1,  # 价格匹配期望
            2 if user_profile.get('prefer_natural', False) else 0  # 自然成分偏好
        ])
        
        # 计算余弦相似度
        similarities = cosine_similarity([user_vector], features)[0]
        return similarities
    
    def check_ingredient_conflicts(self, selected_products):
        """检查成分冲突"""
        conflicts = []
        ingredients = []
        
        for product in selected_products:
            ings = product['ingredients'].split(',')
            ingredients.extend(ings)
        
        # 检查冲突规则
        for (ing1, ing2), message in self.conflict_rules.items():
            if ing1 in ingredients and ing2 in ingredients:
                conflicts.append({
                    'ingredient1': ing1,
                    'ingredient2': ing2,
                    'message': message
                })
        
        return conflicts
    
    def generate_formula(self, user_profile):
        """生成个性化配方"""
        print(f"正在为{user_profile['name']}生成个性化配方...")
        print(f"肤质: {user_profile['skin_type']}")
        print(f"关注问题: {user_profile['concerns']}")
        print(f"预算: {user_profile['budget']}元")
        
        # 计算相似度
        similarities = self.calculate_similarity(user_profile, self.products)
        
        # 按类别分组推荐
        skincare_products = self.products[self.products['category'] == 'skincare'].copy()
        makeup_products = self.products[self.products['category'] == 'makeup'].copy()
        
        skincare_products['similarity'] = similarities[self.products['category'] == 'skincare']
        makeup_products['similarity'] = similarities[self.products['category'] == 'makeup']
        
        # 选择Top-2护肤品和Top-2彩妆品
        recommended_skincare = skincare_products.nlargest(2, 'similarity')
        recommended_makeup = makeup_products.nlargest(2, 'similarity')
        
        # 合并推荐
        formula = pd.concat([recommended_skincare, recommended_makeup])
        
        # 检查冲突
        selected_products = formula.to_dict('records')
        conflicts = self.check_ingredient_conflicts(selected_products)
        
        # 计算总价
        total_price = formula['price'].sum()
        
        # 生成使用建议
        usage_tips = self.generate_usage_tips(user_profile, selected_products)
        
        return {
            'formula': formula[['name', 'category', 'ingredients', 'price']].to_dict('records'),
            'total_price': total_price,
            'conflicts': conflicts,
            'usage_tips': usage_tips,
            'confidence': float(formula['similarity'].mean())
        }
    
    def generate_usage_tips(self, user_profile, products):
        """生成使用建议"""
        tips = []
        
        # 根据肤质建议使用顺序
        if '干性' in user_profile['skin_type']:
            tips.append("建议使用顺序:洁面 → 精华 → 乳液/面霜 → 防晒")
            tips.append("每周可使用2-3次保湿面膜加强护理")
        elif '油性' in user_profile['skin_type']:
            tips.append("建议使用顺序:洁面 → 爽肤水 → 精华 → 清爽乳液")
            tips.append("T区可重点控油,U区适度保湿")
        
        # 根据成分建议使用时间
        for product in products:
            if '视黄醇' in product['ingredients']:
                tips.append("含视黄醇的产品建议夜间使用")
            if '维生素C' in product['ingredients']:
                tips.append("含维生素C的产品建议日间使用,需配合防晒")
        
        # 根据问题建议使用频率
        if '出油' in user_profile['concerns']:
            tips.append("控油产品可每日使用,观察皮肤反应")
        if '泛红' in user_profile['concerns']:
            tips.append("舒缓产品建议持续使用至少2周观察效果")
        
        return tips

# 使用示例
if __name__ == "__main__":
    # 用户画像
    user_profile = {
        'name': '张小姐',
        'skin_type': '混合性',
        'concerns': ['出油', '毛孔', '暗沉'],
        'budget': 800,
        'prefer_natural': True
    }
    
    generator = PersonalizedFormulaGenerator()
    result = generator.generate_formula(user_profile)
    
    print("\n=== 个性化配方方案 ===")
    for item in result['formula']:
        print(f"【{item['name']}】 - {item['price']}元")
        print(f"  成分: {item['ingredients']}")
    
    print(f"\n总价: {result['total_price']}元")
    print(f"推荐置信度: {result['confidence']:.2%}")
    
    if result['conflicts']:
        print("\n⚠️ 成分冲突提醒:")
        for conflict in result['conflicts']:
            print(f"  {conflict['ingredient1']} + {conflict['ingredient2']}: {conflict['message']}")
    
    print("\n使用建议:")
    for tip in result['usage_tips']:
        print(f"  • {tip}")

二、智能推荐系统架构

2.1 多维度用户画像构建

精准的推荐依赖于全面的用户画像,包括静态属性和动态行为数据。

用户画像数据结构:

{
  "user_id": "U2023001",
  "static_profile": {
    "age": 25,
    "skin_type": "混合性",
    "concerns": ["出油", "毛孔", "暗沉"],
    "budget_level": "中等",
    "style_preference": ["自然", "通勤"]
  },
  "behavioral_data": {
    "browsing_history": ["粉底液", "口红", "精华"],
    "purchase_history": [
      {"product_id": "P001", "rating": 4.5, "comment": "持妆效果好"},
      {"product_id": "P002", "rating": 3.8, "comment": "有点干"}
    ],
    "virtual_try_on": ["唇膏#305", "眼影#08"],
    "search_queries": ["适合混合皮的粉底", "持久口红"]
  },
  "preference_vector": {
    "texture": [0.7, 0.2, 0.1],  # 偏好质地: 清爽/滋润/哑光
    "coverage": [0.6, 0.4],      # 遮瑕度: 轻薄/高遮瑕
    "longevity": [0.8, 0.2]      # 持久度: 长效/自然
  }
}

2.2 混合推荐算法实现

结合协同过滤、内容过滤和知识图谱的混合推荐系统。

完整代码示例:

import numpy as np
import pandas as pd
from scipy.sparse import csr_matrix
from sklearn.neighbors import NearestNeighbors
from sklearn.feature_extraction.text import TfidfVectorizer
import networkx as nx

class HybridRecommendationSystem:
    def __init__(self):
        # 模拟用户-产品交互数据
        self.user_product_interactions = pd.DataFrame({
            'user_id': ['U1', 'U1', 'U2', 'U2', 'U3', 'U3', 'U4', 'U4', 'U5', 'U5'],
            'product_id': ['P1', 'P2', 'P1', 'P3', 'P2', 'P4', 'P1', 'P5', 'P3', 'P5'],
            'rating': [5, 4, 4, 3, 5, 4, 3, 5, 4, 5],
            'interaction_type': ['purchase', 'view', 'purchase', 'view', 'purchase', 'view', 'view', 'purchase', 'purchase', 'purchase']
        })
        
        # 产品特征数据
        self.product_features = pd.DataFrame({
            'product_id': ['P1', 'P2', 'P3', 'P4', 'P5'],
            'name': ['保湿精华', '控油乳液', '抗衰老面霜', '美白精华', '滋润面霜'],
            'category': ['skincare', 'skincare', 'skincare', 'skincare', 'skincare'],
            'ingredients': ['玻尿酸,甘油,维生素B5', '水杨酸,烟酰胺,锌', '视黄醇,胜肽,胶原蛋白', '维生素C,烟酰胺,熊果苷', '甘油,玻尿酸,荷荷巴油'],
            'suitable_skin': ['干性,敏感性', '油性,混合性', '中性,干性', '所有肤质', '干性,中性'],
            'price': [180, 150, 320, 250, 200],
            'tags': ['保湿', '控油', '抗老', '美白', '滋润']
        })
        
        # 构建知识图谱
        self.knowledge_graph = self._build_knowledge_graph()
        
    def _build_knowledge_graph(self):
        """构建成分-功效-肤质知识图谱"""
        G = nx.DiGraph()
        
        # 添加产品节点
        for _, product in self.product_features.iterrows():
            G.add_node(product['product_id'], type='product', name=product['name'])
            
            # 添加成分节点和关系
            for ing in product['ingredients'].split(','):
                G.add_node(ing, type='ingredient')
                G.add_edge(product['product_id'], ing, relation='contains')
                G.add_edge(ing, product['product_id'], relation='in')
            
            # 添加肤质节点和关系
            for skin in product['suitable_skin'].split(','):
                G.add_node(skin, type='skin_type')
                G.add_edge(skin, product['product_id'], relation='suitable_for')
            
            # 添加功效节点和关系
            for tag in product['tags'].split(','):
                G.add_node(tag, type='effect')
                G.add_edge(product['product_id'], tag, relation='has_effect')
        
        return G
    
    def collaborative_filtering(self, user_id, k=3):
        """基于用户的协同过滤"""
        # 创建用户-产品矩阵
        user_product_matrix = self.user_product_interactions.pivot_table(
            index='user_id', 
            columns='product_id', 
            values='rating', 
            fill_value=0
        )
        
        # 计算用户相似度
        user_similarity = cosine_similarity(user_product_matrix)
        user_similarity_df = pd.DataFrame(
            user_similarity, 
            index=user_product_matrix.index, 
            columns=user_product_matrix.index
        )
        
        if user_id not in user_similarity_df.index:
            return []
        
        # 找到最相似的k个用户
        similar_users = user_similarity_df[user_id].sort_values(ascending=False)[1:k+1]
        
        # 获取这些用户评分高的产品
        recommendations = []
        for similar_user, similarity in similar_users.items():
            # 获取相似用户评分>4的产品
            user_ratings = self.user_product_interactions[
                (self.user_product_interactions['user_id'] == similar_user) & 
                (self.user_product_interactions['rating'] >= 4)
            ]
            
            for _, row in user_ratings.iterrows():
                # 排除用户已经交互过的产品
                if not self.user_product_interactions[
                    (self.user_product_interactions['user_id'] == user_id) & 
                    (self.user_product_interactions['product_id'] == row['product_id'])
                ].empty:
                    continue
                
                recommendations.append({
                    'product_id': row['product_id'],
                    'score': row['rating'] * similarity,
                    'source': 'collaborative'
                })
        
        return recommendations
    
    def content_based_filtering(self, user_profile, top_n=5):
        """基于内容的推荐"""
        # 提取用户偏好特征
        user_concerns = user_profile.get('concerns', [])
        user_skin_type = user_profile.get('skin_type', '')
        
        # 计算产品与用户需求的匹配度
        recommendations = []
        
        for _, product in self.product_features.iterrows():
            score = 0
            
            # 肤质匹配
            if user_skin_type in product['suitable_skin']:
                score += 3
            
            # 问题匹配
            product_concerns = product['tags'].split(',')
            matched_concerns = set(user_concerns) & set(product_concerns)
            score += len(matched_concerns) * 2
            
            # 价格匹配(假设用户预算中等)
            if user_profile.get('budget_level') == '中等' and 150 <= product['price'] <= 300:
                score += 1
            
            # 成分偏好(如果有)
            if user_profile.get('prefer_natural', False):
                natural_ings = ['甘油', '玻尿酸', '积雪草', '洋甘菊']
                for ing in natural_ings:
                    if ing in product['ingredients']:
                        score += 0.5
            
            if score > 0:
                recommendations.append({
                    'product_id': product['product_id'],
                    'score': score,
                    'source': 'content'
                })
        
        return sorted(recommendations, key=lambda x: x['score'], reverse=True)[:top_n]
    
    def knowledge_graph_recommendation(self, user_profile, top_n=5):
        """基于知识图谱的推荐"""
        user_concerns = user_profile.get('concerns', [])
        user_skin_type = user_profile.get('skin_type', '')
        
        recommendations = []
        
        # 从用户关注的问题出发,在图谱中寻找相关产品
        for concern in user_concerns:
            if concern in self.knowledge_graph.nodes():
                # 找到有该功效的产品
                for product_id in self.knowledge_graph.predecessors(concern):
                    if self.knowledge_graph.nodes[product_id]['type'] == 'product':
                        # 检查肤质是否匹配
                        skin_nodes = list(self.knowledge_graph.successors(product_id))
                        skin_types = [node for node in skin_nodes if self.knowledge_graph.nodes[node]['type'] == 'skin_type']
                        
                        if user_skin_type in skin_types:
                            recommendations.append({
                                'product_id': product_id,
                                'score': 2.5,
                                'source': 'knowledge_graph'
                            })
        
        # 去重
        seen = set()
        unique_recommendations = []
        for rec in recommendations:
            if rec['product_id'] not in seen:
                seen.add(rec['product_id'])
                unique_recommendations.append(rec)
        
        return unique_recommendations[:top_n]
    
    def hybrid_recommend(self, user_id, user_profile, weights={'collaborative': 0.4, 'content': 0.3, 'knowledge': 0.3}):
        """混合推荐"""
        # 获取各来源的推荐
        cf_recs = self.collaborative_filtering(user_id)
        content_recs = self.content_based_filtering(user_profile)
        kg_recs = self.knowledge_graph_recommendation(user_profile)
        
        # 合并所有推荐
        all_recommendations = {}
        
        for rec in cf_recs:
            pid = rec['product_id']
            if pid not in all_recommendations:
                all_recommendations[pid] = {'score': 0, 'sources': []}
            all_recommendations[pid]['score'] += rec['score'] * weights['collaborative']
            all_recommendations[pid]['sources'].append('协同过滤')
        
        for rec in content_recs:
            pid = rec['product_id']
            if pid not in all_recommendations:
                all_recommendations[pid] = {'score': 0, 'sources': []}
            all_recommendations[pid]['score'] += rec['score'] * weights['content']
            all_recommendations[pid]['sources'].append('内容匹配')
        
        for rec in kg_recs:
            pid = rec['product_id']
            if pid not in all_recommendations:
                all_recommendations[pid] = {'score': 0, 'sources': []}
            all_recommendations[pid]['score'] += rec['score'] * weights['knowledge']
            all_recommendations[pid]['sources'].append('知识图谱')
        
        # 转换为列表并排序
        final_recommendations = []
        for pid, data in all_recommendations.items():
            product_info = self.product_features[self.product_features['product_id'] == pid].iloc[0]
            final_recommendations.append({
                'product_id': pid,
                'name': product_info['name'],
                'score': data['score'],
                'sources': data['sources'],
                'price': product_info['price'],
                'reason': f"基于{', '.join(data['sources'])}推荐"
            })
        
        return sorted(final_recommendations, key=lambda x: x['score'], reverse=True)

# 使用示例
if __name__ == "__main__":
    system = HybridRecommendationSystem()
    
    # 用户画像
    user_profile = {
        'user_id': 'U1',
        'skin_type': '混合性',
        'concerns': ['控油', '毛孔'],
        'budget_level': '中等',
        'prefer_natural': True
    }
    
    # 获取推荐
    recommendations = system.hybrid_recommend('U1', user_profile)
    
    print("=== 个性化推荐结果 ===")
    for i, rec in enumerate(recommendations, 1):
        print(f"{i}. {rec['name']} (¥{rec['price']})")
        print(f"   推荐理由: {rec['reason']}")
        print(f"   综合评分: {rec['score']:.2f}")
        print()

三、AI驱动的智能客服与咨询

3.1 美妆领域专用聊天机器人

基于大语言模型微调的美妆顾问机器人,能够理解用户需求并提供专业建议。

技术实现:

  • 使用RAG(检索增强生成)技术
  • 结合美妆知识库
  • 支持多轮对话和上下文理解

代码示例:

import json
import re
from typing import List, Dict, Any

class BeautyChatbot:
    def __init__(self):
        # 美妆知识库
        self.knowledge_base = {
            '肤质判断': {
                'patterns': ['我是哪种肤质', '怎么判断肤质', '皮肤类型'],
                'response': '我可以帮您分析肤质。请告诉我:1. 您的皮肤容易出油吗?2. 洗脸后是否紧绷?3. 是否容易泛红?'
            },
            '产品推荐': {
                'patterns': ['推荐', '买什么', '哪个牌子好'],
                'response': '为了更好地推荐,我需要了解:1. 您的肤质?2. 想解决什么问题?3. 预算范围?'
            },
            '使用方法': {
                'patterns': ['怎么用', '使用顺序', '步骤'],
                'response': '基础护肤顺序:1. 洁面 2. 爽肤水 3. 精华 4. 乳液/面霜 5. 防晒(白天)'
            },
            '成分问题': {
                'patterns': ['成分', '含什么', '有酒精吗'],
                'response': '我可以查询产品成分。请告诉我具体产品名称或成分名。'
            }
        }
        
        # 成分知识库
        self.ingredients_db = {
            '玻尿酸': {'功效': '保湿', '适合': '所有肤质', '注意事项': '需配合锁水产品'},
            '视黄醇': {'功效': '抗老', '适合': '耐受性皮肤', '注意事项': '夜间使用,需防晒'},
            '烟酰胺': {'功效': '美白控油', '适合': '油性/混合性', '注意事项': '建立耐受'},
            '水杨酸': {'功效': '去角质', '适合': '油性/痘痘肌', '注意事项': '避免与其他酸类叠加'}
        }
        
        # 对话历史
        self.conversation_history = {}
    
    def analyze_intent(self, message: str) -> str:
        """分析用户意图"""
        message_lower = message.lower()
        
        for intent, data in self.knowledge_base.items():
            for pattern in data['patterns']:
                if pattern in message_lower:
                    return intent
        
        # 默认意图
        if any(word in message_lower for word in ['你好', 'hi', 'hello']):
            return 'greeting'
        elif any(word in message_lower for word in ['谢谢', '感谢']):
            return 'thanks'
        else:
            return 'general'
    
    def extract_entities(self, message: str) -> Dict[str, List[str]]:
        """提取实体信息"""
        entities = {
            'skin_type': [],
            'concerns': [],
            'ingredients': [],
            'products': []
        }
        
        # 肤质关键词
        skin_types = ['干性', '油性', '混合性', '敏感性', '中性']
        for st in skin_types:
            if st in message:
                entities['skin_type'].append(st)
        
        # 问题关键词
        concerns_map = {
            '痘痘': '痘痘', '出油': '出油', '毛孔': '毛孔',
            '干燥': '干燥', '暗沉': '暗沉', '皱纹': '皱纹',
            '泛红': '泛红', '敏感': '敏感'
        }
        for key, value in concerns_map.items():
            if key in message:
                entities['concerns'].append(value)
        
        # 成分关键词
        for ing in self.ingredients_db.keys():
            if ing in message:
                entities['ingredients'].append(ing)
        
        # 产品名称(简单匹配)
        product_keywords = ['精华', '面霜', '乳液', '口红', '粉底']
        for keyword in product_keywords:
            if keyword in message:
                entities['products'].append(keyword)
        
        return entities
    
    def generate_response(self, message: str, user_id: str = 'default') -> str:
        """生成回复"""
        # 记录对话历史
        if user_id not in self.conversation_history:
            self.conversation_history[user_id] = []
        
        # 分析意图
        intent = self.analyze_intent(message)
        entities = self.extract_entities(message)
        
        # 根据意图生成回复
        if intent == 'greeting':
            response = "您好!我是您的美妆AI顾问,有什么可以帮助您的吗?"
        
        elif intent == '肤质判断':
            if entities['skin_type']:
                response = f"根据您的描述,您可能是{'、'.join(entities['skin_type'])}肤质。"
            else:
                response = self.knowledge_base['肤质判断']['response']
        
        elif intent == '产品推荐':
            if entities['concerns'] and entities['skin_type']:
                concerns = '、'.join(entities['concerns'])
                skin = entities['skin_type'][0]
                response = f"针对{skin}肤质的{concerns}问题,我建议:\n"
                
                # 简单推荐逻辑
                if '出油' in entities['concerns']:
                    response += "1. 含有水杨酸或烟酰胺的控油产品\n"
                if '干燥' in entities['concerns']:
                    response += "2. 含有玻尿酸或神经酰胺的保湿产品\n"
                if '痘痘' in entities['concerns']:
                    response += "3. 含有积雪草或茶树精油的舒缓产品\n"
                
                response += "建议您先试用小样,观察皮肤反应。"
            else:
                response = self.knowledge_base['产品推荐']['response']
        
        elif intent == '成分问题':
            if entities['ingredients']:
                ing = entities['ingredients'][0]
                if ing in self.ingredients_db:
                    info = self.ingredients_db[ing]
                    response = f"【{ing}】\n"
                    response += f"功效: {info['功效']}\n"
                    response += f"适合肤质: {info['适合']}\n"
                    response += f"注意事项: {info['注意事项']}"
                else:
                    response = f"暂无{ing}的详细信息。"
            else:
                response = "请告诉我您想查询的成分名称。"
        
        elif intent == 'thanks':
            response = "不客气!如果还有其他美妆问题,随时问我哦~"
        
        else:
            response = "抱歉,我可能没理解您的问题。您可以尝试:\n"
            response += "- 询问肤质判断\n"
            response += "- 描述皮肤问题求推荐\n"
            response += "- 查询成分功效\n"
            response += "- 了解护肤步骤"
        
        # 记录对话
        self.conversation_history[user_id].append({
            'user': message,
            'bot': response,
            'intent': intent,
            'entities': entities
        })
        
        return response
    
    def get_conversation_summary(self, user_id: str) -> str:
        """获取对话总结"""
        if user_id not in self.conversation_history:
            return "暂无对话记录"
        
        history = self.conversation_history[user_id]
        summary = f"共{len(history)}轮对话\n"
        
        # 提取关键信息
        skin_types = set()
        concerns = set()
        
        for turn in history:
            entities = turn['entities']
            skin_types.update(entities['skin_type'])
            concerns.update(entities['concerns'])
        
        if skin_types:
            summary += f"识别肤质: {', '.join(skin_types)}\n"
        if concerns:
            summary += f"关注问题: {', '.join(concerns)}\n"
        
        return summary

# 使用示例
if __name__ == "__main__":
    bot = BeautyChatbot()
    
    # 模拟对话
    messages = [
        "你好",
        "我是混合性皮肤,容易出油和长毛孔,应该用什么产品?",
        "玻尿酸有什么作用?",
        "谢谢"
    ]
    
    print("=== 美妆AI顾问对话演示 ===\n")
    for msg in messages:
        print(f"用户: {msg}")
        response = bot.generate_response(msg, "user001")
        print(f"AI顾问: {response}\n")
    
    # 查看对话总结
    print("=== 对话总结 ===")
    print(bot.get_conversation_summary("user001"))

四、实际应用案例与效果分析

4.1 国际品牌应用实例

欧莱雅集团:

  • ModiFace:收购的AR试妆技术,支持1000+产品虚拟试用
  • Perso:AI驱动的个性化护肤品配方设备
  • 效果:线上转化率提升3倍,用户停留时间增加5倍

雅诗兰黛:

  • AI粉底匹配系统:通过照片分析肤色、肤质,推荐匹配色号
  • 效果:退货率降低40%,客户满意度提升35%

4.2 新兴品牌创新应用

Glossier:

  • 利用AI分析社交媒体数据,洞察Z世代美妆趋势
  • 基于用户UGC内容生成个性化推荐
  • 效果:复购率提升60%,客单价增加45%

Function of Beauty:

  • AI驱动的洗发水定制
  • 用户填写问卷后,机器现场调配
  • 效果:年销售额突破1亿美元,用户留存率75%# 潮流美妆如何借助AI技术实现个性化定制与智能推荐

引言:AI技术在美妆行业的革命性变革

在数字化时代,美妆行业正经历着前所未有的转型。传统的”一刀切”产品模式已无法满足消费者日益增长的个性化需求。AI技术的引入,为美妆品牌提供了精准洞察用户需求、提供定制化解决方案的全新可能。通过机器学习、计算机视觉、自然语言处理等技术,美妆企业能够实现从肤质分析到产品推荐的全链路智能化服务,不仅提升了用户体验,也显著提高了转化率和客户忠诚度。

一、AI技术在美妆个性化定制中的核心应用

1.1 智能肤质分析系统

智能肤质分析是AI在美妆领域最基础也最重要的应用之一。通过深度学习算法,系统能够从用户上传的照片中精准识别肤质类型、问题区域和潜在风险。

技术实现原理:

  • 使用卷积神经网络(CNN)对皮肤图像进行特征提取
  • 通过图像分割技术识别不同皮肤区域(如T区、U区)
  • 结合光照校正算法消除环境因素影响

完整代码示例:

import tensorflow as tf
import cv2
import numpy as np
from tensorflow.keras.applications import MobileNetV2
from tensorflow.keras.layers import Dense, GlobalAveragePooling2D
from tensorflow.keras.models import Model

class SkinAnalyzer:
    def __init__(self):
        # 加载预训练的MobileNetV2模型作为特征提取器
        self.base_model = MobileNetV2(weights='imagenet', 
                                    include_top=False,
                                    input_shape=(224, 224, 3))
        
        # 冻结基础模型的前100层
        for layer in self.base_model.layers[:100]:
            layer.trainable = False
            
        # 添加自定义分类层
        x = self.base_model.output
        x = GlobalAveragePooling2D()(x)
        x = Dense(512, activation='relu')(x)
        predictions = Dense(6, activation='softmax')(x)  # 6种肤质分类
        
        self.model = Model(inputs=self.base_model.input, outputs=predictions)
        
        # 编译模型
        self.model.compile(optimizer='adam',
                          loss='categorical_crossentropy',
                          metrics=['accuracy'])
    
    def preprocess_image(self, image_path):
        """预处理输入图像"""
        img = cv2.imread(image_path)
        img = cv2.resize(img, (224, 224))
        img = cv2.cvtColor(img, cv2.COLOR_BGR2RGB)
        img = img.astype('float32') / 255.0
        return np.expand_dims(img, axis=0)
    
    def analyze_skin(self, image_path):
        """分析肤质并返回结果"""
        processed_img = self.preprocess_image(image_path)
        predictions = self.model.predict(processed_img)
        
        # 肤质分类标签
        skin_types = ['干性', '油性', '混合性', '敏感性', '中性', '问题性']
        result_index = np.argmax(predictions[0])
        
        # 获取置信度
        confidence = predictions[0][result_index]
        
        return {
            'skin_type': skin_types[result_index],
            'confidence': float(confidence),
            'all_probabilities': dict(zip(skin_types, predictions[0].tolist()))
        }

# 使用示例
if __name__ == "__main__":
    analyzer = SkinAnalyzer()
    result = analyzer.analyze_skin("user_selfie.jpg")
    print(f"检测结果:{result['skin_type']} (置信度: {result['confidence']:.2%})")

实际应用场景: 用户在品牌APP中上传一张素颜照片,系统在3秒内返回肤质分析报告,包括:

  • 肤质类型(干性/油性/混合性/敏感性/中性/问题性)
  • 皮肤问题识别(痘痘、黑头、细纹、色斑等)
  • 皮肤年龄评估
  • 个性化护肤建议

1.2 面部特征识别与彩妆模拟

AI能够精准识别面部关键点,实现虚拟试妆和彩妆效果预览,这是个性化定制的重要环节。

技术实现原理:

  • 使用dlib或MediaPipe进行面部关键点检测
  • 通过GAN(生成对抗网络)生成逼真的彩妆效果
  • 实时渲染技术实现AR试妆

完整代码示例:

import mediapipe as mp
import cv2
import numpy as np
from PIL import Image, ImageDraw

class VirtualMakeup:
    def __init__(self):
        self.mp_face_mesh = mp.solutions.face_mesh
        self.face_mesh = self.mp_face_mesh.FaceMesh(
            static_image_mode=False,
            max_num_faces=1,
            refine_landmarks=True,
            min_detection_confidence=0.5
        )
        
        # 定义彩妆区域对应的面部关键点索引
        self.lips_indices = [61, 146, 91, 181, 84, 17, 314, 405, 321, 375, 291, 409, 270, 269, 267, 0, 37, 39, 40, 185]
        self.left_eye_indices = [33, 7, 163, 144, 145, 153, 154, 155, 133, 173, 157, 158, 159, 160, 161, 246]
        self.right_eye_indices = [263, 249, 390, 373, 374, 380, 381, 382, 362, 398, 384, 385, 386, 387, 388, 466]
        self.face_oval = [10, 338, 297, 332, 284, 251, 389, 356, 454, 323, 361, 288, 397, 365, 379, 378, 400, 377, 152, 148, 176, 149, 150, 136, 172, 58, 132, 93, 234, 127, 162, 21, 54, 103, 67, 109]
    
    def detect_landmarks(self, image):
        """检测面部关键点"""
        rgb_image = cv2.cvtColor(image, cv2.COLOR_BGR2RGB)
        results = self.face_mesh.process(rgb_image)
        
        if results.multi_face_landmarks:
            face_landmarks = results.multi_face_landmarks[0]
            h, w, _ = image.shape
            
            # 提取关键点坐标
            landmarks = []
            for landmark in face_landmarks.landmark:
                x = int(landmark.x * w)
                y = int(landmark.y * h)
                landmarks.append((x, y))
            
            return landmarks
        return None
    
    def apply_lipstick(self, image, landmarks, color=(255, 0, 0), opacity=0.7):
        """应用口红效果"""
        if landmarks is None:
            return image
            
        # 创建透明图层
        overlay = image.copy()
        output = image.copy()
        
        # 获取嘴唇区域的多边形
        lip_points = [landmarks[i] for i in self.lips_indices if i < len(landmarks)]
        
        if len(lip_points) < 3:
            return image
            
        # 将点转换为numpy数组
        lip_points = np.array(lip_points, dtype=np.int32)
        
        # 填充颜色
        cv2.fillPoly(overlay, [lip_points], color)
        
        # 应用透明度
        cv2.addWeighted(overlay, opacity, output, 1 - opacity, 0, output)
        
        return output
    
    def apply_eyeshadow(self, image, landmarks, color=(100, 100, 200), opacity=0.6):
        """应用眼影效果"""
        if landmarks is None:
            return image
            
        overlay = image.copy()
        output = image.copy()
        
        # 左眼眼影
        left_eye_points = [landmarks[i] for i in self.left_eye_indices if i < len(landmarks)]
        if len(left_eye_points) > 3:
            left_eye_points = np.array(left_eye_points, dtype=np.int32)
            cv2.fillPoly(overlay, [left_eye_points], color)
        
        # 右眼眼影
        right_eye_points = [landmarks[i] for i in self.right_eye_indices if i < len(landmarks)]
        if len(right_eye_points) > 10:
            right_eye_points = np.array(right_eye_points, dtype=np.int32)
            cv2.fillPoly(overlay, [right_eye_points], color)
        
        cv2.addWeighted(overlay, opacity, output, 1 - opacity, 0, output)
        return output
    
    def apply_blush(self, image, landmarks, color=(255, 182, 193), opacity=0.5):
        """应用腮红效果"""
        if landmarks is None:
            return image
            
        overlay = image.copy()
        output = image.copy()
        
        # 获取脸颊区域(简化版)
        # 左脸颊:从太阳穴到下巴
        left_cheek = [landmarks[i] for i in [234, 93, 132, 58, 172, 136, 150, 176, 152, 400, 379, 365, 397, 288, 361, 323, 454]]
        left_cheek = [p for p in left_cheek if p is not None]
        
        if len(left_cheek) > 3:
            left_cheek = np.array(left_cheek, dtype=np.int32)
            cv2.fillPoly(overlay, [left_cheek], color)
        
        cv2.addWeighted(overlay, opacity, output, 1 - opacity, 0, output)
        return output
    
    def apply_full_makeup(self, image_path, makeup_styles):
        """应用全套彩妆"""
        image = cv2.imread(image_path)
        landmarks = self.detect_landmarks(image)
        
        if landmarks is None:
            print("未检测到人脸")
            return None
        
        result = image.copy()
        
        # 根据风格应用彩妆
        if 'lipstick' in makeup_styles:
            result = self.apply_lipstick(result, landmarks, 
                                      color=makeup_styles['lipstick']['color'],
                                      opacity=makeup_styles['lipstick']['opacity'])
        
        if 'eyeshadow' in makeup_styles:
            result = self.apply_eyeshadow(result, landmarks,
                                       color=makeup_styles['eyeshadow']['color'],
                                       opacity=makeup_styles['eyeshadow']['opacity'])
        
        if 'blush' in makeup_styles:
            result = self.apply_blush(result, landmarks,
                                    color=makeup_styles['blush']['color'],
                                    opacity=makeup_styles['blush']['opacity'])
        
        return result

# 使用示例
if __name__ == "__main__":
    makeup_app = VirtualMakeup()
    
    # 定义彩妆风格
    daily_style = {
        'lipstick': {'color': (220, 120, 150), 'opacity': 0.6},
        'eyeshadow': {'color': (180, 160, 200), 'opacity': 0.4},
        'blush': {'color': (255, 182, 193), 'opacity': 0.3}
    }
    
    # 应用彩妆
    result = makeup_app.apply_full_makeup("user_photo.jpg", daily_style)
    
    if result is not None:
        cv2.imwrite("makeup_result.jpg", result)
        print("彩妆效果已生成")

实际应用场景: 用户选择”日常通勤”风格,系统自动应用自然的口红、眼影和腮红效果,并实时显示在屏幕上。用户可以调整颜色深浅、更换不同色号,最终确定最适合自己的彩妆方案。

1.3 个性化配方生成

基于肤质分析和用户偏好,AI能够生成个性化的产品配方,包括护肤品组合和彩妆搭配。

技术实现原理:

  • 使用推荐系统算法(协同过滤+内容过滤)
  • 结合成分知识图谱
  • 应用约束满足问题(CSP)求解器

完整代码示例:

import pandas as pd
import numpy as np
from sklearn.metrics.pairwise import cosine_similarity
from sklearn.feature_extraction.text import TfidfVectorizer
import networkx as nx

class PersonalizedFormulaGenerator:
    def __init__(self):
        # 模拟产品数据库
        self.products = pd.DataFrame({
            'product_id': [1, 2, 3, 4, 5, 6, 7, 8, 9, 10],
            'name': ['保湿精华', '控油乳液', '抗衰老面霜', '舒缓精华', '美白精华',
                    '哑光粉底液', '滋润粉底液', '持久口红', '滋润口红', '防水眼线笔'],
            'category': ['skincare', 'skincare', 'skincare', 'skincare', 'skincare',
                        'makeup', 'makeup', 'makeup', 'makeup', 'makeup'],
            'ingredients': ['玻尿酸,甘油,维生素B5', '水杨酸,烟酰胺,锌', '视黄醇,胜肽,胶原蛋白',
                          '积雪草,洋甘菊,神经酰胺', '维生素C,烟酰胺,熊果苷',
                          '硅石,二氧化钛,吸油粉末', '甘油,玻尿酸,荷荷巴油',
                          '蜂蜡,色素,维生素E', '羊毛脂,油脂,色素', '炭黑,聚合物,防水成分'],
            'suitable_skin': ['干性,敏感性', '油性,混合性', '中性,干性', '敏感性,干性', '所有肤质',
                            '油性,混合性', '干性,中性', '所有肤质', '干性,敏感性', '所有肤质'],
            'concerns': ['干燥,缺水', '出油,毛孔', '皱纹,松弛', '泛红,刺激', '暗沉,色斑',
                        '脱妆,油光', '卡粉,干燥', '脱色,干燥', '起皮,唇纹', '晕染,脱妆'],
            'price': [180, 150, 320, 200, 250, 220, 240, 120, 110, 130]
        })
        
        # 成分冲突矩阵(某些成分不能同时使用)
        self.conflict_rules = {
            ('视黄醇', '维生素C'): '建议分开使用,避免刺激',
            ('水杨酸', '视黄醇'): '建议分开使用,避免过度去角质',
            ('烟酰胺', '维生素C'): '可以使用,但建议间隔'
        }
        
        # 肤质-功效映射
        self.skin_concern_mapping = {
            '干性': ['保湿', '滋润', '修复'],
            '油性': ['控油', '收敛', '清爽'],
            '混合性': ['平衡', '分区护理'],
            '敏感性': ['舒缓', '修复', '温和'],
            '问题性': ['治疗', '修复', '预防']
        }
    
    def calculate_similarity(self, user_profile, products):
        """计算用户画像与产品的相似度"""
        # 提取特征
        features = []
        for _, product in products.iterrows():
            # 肤质匹配度
            skin_match = len(set(user_profile['skin_type'].split(',')) & 
                           set(product['suitable_skin'].split(',')))
            
            # 问题匹配度
            concern_match = len(set(user_profile['concerns']) & 
                              set(product['concerns'].split(',')))
            
            # 价格匹配度(用户预算内)
            price_match = 1 if product['price'] <= user_profile['budget'] else 0.5
            
            # 成分偏好(用户偏好天然成分)
            natural_score = 0
            if user_profile.get('prefer_natural', False):
                natural_ingredients = ['甘油', '玻尿酸', '积雪草', '洋甘菊', '维生素C']
                for ing in natural_ingredients:
                    if ing in product['ingredients']:
                        natural_score += 0.2
            
            features.append([skin_match, concern_match, price_match, natural_score])
        
        features = np.array(features)
        user_vector = np.array([
            3,  # 用户肤质匹配期望
            len(user_profile['concerns']),  # 用户问题数量
            1,  # 价格匹配期望
            2 if user_profile.get('prefer_natural', False) else 0  # 自然成分偏好
        ])
        
        # 计算余弦相似度
        similarities = cosine_similarity([user_vector], features)[0]
        return similarities
    
    def check_ingredient_conflicts(self, selected_products):
        """检查成分冲突"""
        conflicts = []
        ingredients = []
        
        for product in selected_products:
            ings = product['ingredients'].split(',')
            ingredients.extend(ings)
        
        # 检查冲突规则
        for (ing1, ing2), message in self.conflict_rules.items():
            if ing1 in ingredients and ing2 in ingredients:
                conflicts.append({
                    'ingredient1': ing1,
                    'ingredient2': ing2,
                    'message': message
                })
        
        return conflicts
    
    def generate_formula(self, user_profile):
        """生成个性化配方"""
        print(f"正在为{user_profile['name']}生成个性化配方...")
        print(f"肤质: {user_profile['skin_type']}")
        print(f"关注问题: {user_profile['concerns']}")
        print(f"预算: {user_profile['budget']}元")
        
        # 计算相似度
        similarities = self.calculate_similarity(user_profile, self.products)
        
        # 按类别分组推荐
        skincare_products = self.products[self.products['category'] == 'skincare'].copy()
        makeup_products = self.products[self.products['category'] == 'makeup'].copy()
        
        skincare_products['similarity'] = similarities[self.products['category'] == 'skincare']
        makeup_products['similarity'] = similarities[self.products['category'] == 'makeup']
        
        # 选择Top-2护肤品和Top-2彩妆品
        recommended_skincare = skincare_products.nlargest(2, 'similarity')
        recommended_makeup = makeup_products.nlargest(2, 'similarity')
        
        # 合并推荐
        formula = pd.concat([recommended_skincare, recommended_makeup])
        
        # 检查冲突
        selected_products = formula.to_dict('records')
        conflicts = self.check_ingredient_conflicts(selected_products)
        
        # 计算总价
        total_price = formula['price'].sum()
        
        # 生成使用建议
        usage_tips = self.generate_usage_tips(user_profile, selected_products)
        
        return {
            'formula': formula[['name', 'category', 'ingredients', 'price']].to_dict('records'),
            'total_price': total_price,
            'conflicts': conflicts,
            'usage_tips': usage_tips,
            'confidence': float(formula['similarity'].mean())
        }
    
    def generate_usage_tips(self, user_profile, products):
        """生成使用建议"""
        tips = []
        
        # 根据肤质建议使用顺序
        if '干性' in user_profile['skin_type']:
            tips.append("建议使用顺序:洁面 → 精华 → 乳液/面霜 → 防晒")
            tips.append("每周可使用2-3次保湿面膜加强护理")
        elif '油性' in user_profile['skin_type']:
            tips.append("建议使用顺序:洁面 → 爽肤水 → 精华 → 清爽乳液")
            tips.append("T区可重点控油,U区适度保湿")
        
        # 根据成分建议使用时间
        for product in products:
            if '视黄醇' in product['ingredients']:
                tips.append("含视黄醇的产品建议夜间使用")
            if '维生素C' in product['ingredients']:
                tips.append("含维生素C的产品建议日间使用,需配合防晒")
        
        # 根据问题建议使用频率
        if '出油' in user_profile['concerns']:
            tips.append("控油产品可每日使用,观察皮肤反应")
        if '泛红' in user_profile['concerns']:
            tips.append("舒缓产品建议持续使用至少2周观察效果")
        
        return tips

# 使用示例
if __name__ == "__main__":
    # 用户画像
    user_profile = {
        'name': '张小姐',
        'skin_type': '混合性',
        'concerns': ['出油', '毛孔', '暗沉'],
        'budget': 800,
        'prefer_natural': True
    }
    
    generator = PersonalizedFormulaGenerator()
    result = generator.generate_formula(user_profile)
    
    print("\n=== 个性化配方方案 ===")
    for item in result['formula']:
        print(f"【{item['name']}】 - {item['price']}元")
        print(f"  成分: {item['ingredients']}")
    
    print(f"\n总价: {result['total_price']}元")
    print(f"推荐置信度: {result['confidence']:.2%}")
    
    if result['conflicts']:
        print("\n⚠️ 成分冲突提醒:")
        for conflict in result['conflicts']:
            print(f"  {conflict['ingredient1']} + {conflict['ingredient2']}: {conflict['message']}")
    
    print("\n使用建议:")
    for tip in result['usage_tips']:
        print(f"  • {tip}")

二、智能推荐系统架构

2.1 多维度用户画像构建

精准的推荐依赖于全面的用户画像,包括静态属性和动态行为数据。

用户画像数据结构:

{
  "user_id": "U2023001",
  "static_profile": {
    "age": 25,
    "skin_type": "混合性",
    "concerns": ["出油", "毛孔", "暗沉"],
    "budget_level": "中等",
    "style_preference": ["自然", "通勤"]
  },
  "behavioral_data": {
    "browsing_history": ["粉底液", "口红", "精华"],
    "purchase_history": [
      {"product_id": "P001", "rating": 4.5, "comment": "持妆效果好"},
      {"product_id": "P002", "rating": 3.8, "comment": "有点干"}
    ],
    "virtual_try_on": ["唇膏#305", "眼影#08"],
    "search_queries": ["适合混合皮的粉底", "持久口红"]
  },
  "preference_vector": {
    "texture": [0.7, 0.2, 0.1],  # 偏好质地: 清爽/滋润/哑光
    "coverage": [0.6, 0.4],      # 遮瑕度: 轻薄/高遮瑕
    "longevity": [0.8, 0.2]      # 持久度: 长效/自然
  }
}

2.2 混合推荐算法实现

结合协同过滤、内容过滤和知识图谱的混合推荐系统。

完整代码示例:

import numpy as np
import pandas as pd
from scipy.sparse import csr_matrix
from sklearn.neighbors import NearestNeighbors
from sklearn.feature_extraction.text import TfidfVectorizer
import networkx as nx

class HybridRecommendationSystem:
    def __init__(self):
        # 模拟用户-产品交互数据
        self.user_product_interactions = pd.DataFrame({
            'user_id': ['U1', 'U1', 'U2', 'U2', 'U3', 'U3', 'U4', 'U4', 'U5', 'U5'],
            'product_id': ['P1', 'P2', 'P1', 'P3', 'P2', 'P4', 'P1', 'P5', 'P3', 'P5'],
            'rating': [5, 4, 4, 3, 5, 4, 3, 5, 4, 5],
            'interaction_type': ['purchase', 'view', 'purchase', 'view', 'purchase', 'view', 'view', 'purchase', 'purchase', 'purchase']
        })
        
        # 产品特征数据
        self.product_features = pd.DataFrame({
            'product_id': ['P1', 'P2', 'P3', 'P4', 'P5'],
            'name': ['保湿精华', '控油乳液', '抗衰老面霜', '美白精华', '滋润面霜'],
            'category': ['skincare', 'skincare', 'skincare', 'skincare', 'skincare'],
            'ingredients': ['玻尿酸,甘油,维生素B5', '水杨酸,烟酰胺,锌', '视黄醇,胜肽,胶原蛋白', '维生素C,烟酰胺,熊果苷', '甘油,玻尿酸,荷荷巴油'],
            'suitable_skin': ['干性,敏感性', '油性,混合性', '中性,干性', '所有肤质', '干性,中性'],
            'price': [180, 150, 320, 250, 200],
            'tags': ['保湿', '控油', '抗老', '美白', '滋润']
        })
        
        # 构建知识图谱
        self.knowledge_graph = self._build_knowledge_graph()
        
    def _build_knowledge_graph(self):
        """构建成分-功效-肤质知识图谱"""
        G = nx.DiGraph()
        
        # 添加产品节点
        for _, product in self.product_features.iterrows():
            G.add_node(product['product_id'], type='product', name=product['name'])
            
            # 添加成分节点和关系
            for ing in product['ingredients'].split(','):
                G.add_node(ing, type='ingredient')
                G.add_edge(product['product_id'], ing, relation='contains')
                G.add_edge(ing, product['product_id'], relation='in')
            
            # 添加肤质节点和关系
            for skin in product['suitable_skin'].split(','):
                G.add_node(skin, type='skin_type')
                G.add_edge(skin, product['product_id'], relation='suitable_for')
            
            # 添加功效节点和关系
            for tag in product['tags'].split(','):
                G.add_node(tag, type='effect')
                G.add_edge(product['product_id'], tag, relation='has_effect')
        
        return G
    
    def collaborative_filtering(self, user_id, k=3):
        """基于用户的协同过滤"""
        # 创建用户-产品矩阵
        user_product_matrix = self.user_product_interactions.pivot_table(
            index='user_id', 
            columns='product_id', 
            values='rating', 
            fill_value=0
        )
        
        # 计算用户相似度
        user_similarity = cosine_similarity(user_product_matrix)
        user_similarity_df = pd.DataFrame(
            user_similarity, 
            index=user_product_matrix.index, 
            columns=user_product_matrix.index
        )
        
        if user_id not in user_similarity_df.index:
            return []
        
        # 找到最相似的k个用户
        similar_users = user_similarity_df[user_id].sort_values(ascending=False)[1:k+1]
        
        # 获取这些用户评分高的产品
        recommendations = []
        for similar_user, similarity in similar_users.items():
            # 获取相似用户评分>4的产品
            user_ratings = self.user_product_interactions[
                (self.user_product_interactions['user_id'] == similar_user) & 
                (self.user_product_interactions['rating'] >= 4)
            ]
            
            for _, row in user_ratings.iterrows():
                # 排除用户已经交互过的产品
                if not self.user_product_interactions[
                    (self.user_product_interactions['user_id'] == user_id) & 
                    (self.user_product_interactions['product_id'] == row['product_id'])
                ].empty:
                    continue
                
                recommendations.append({
                    'product_id': row['product_id'],
                    'score': row['rating'] * similarity,
                    'source': 'collaborative'
                })
        
        return recommendations
    
    def content_based_filtering(self, user_profile, top_n=5):
        """基于内容的推荐"""
        # 提取用户偏好特征
        user_concerns = user_profile.get('concerns', [])
        user_skin_type = user_profile.get('skin_type', '')
        
        # 计算产品与用户需求的匹配度
        recommendations = []
        
        for _, product in self.product_features.iterrows():
            score = 0
            
            # 肤质匹配
            if user_skin_type in product['suitable_skin']:
                score += 3
            
            # 问题匹配
            product_concerns = product['tags'].split(',')
            matched_concerns = set(user_concerns) & set(product_concerns)
            score += len(matched_concerns) * 2
            
            # 价格匹配(假设用户预算中等)
            if user_profile.get('budget_level') == '中等' and 150 <= product['price'] <= 300:
                score += 1
            
            # 成分偏好(如果有)
            if user_profile.get('prefer_natural', False):
                natural_ings = ['甘油', '玻尿酸', '积雪草', '洋甘菊']
                for ing in natural_ings:
                    if ing in product['ingredients']:
                        score += 0.5
            
            if score > 0:
                recommendations.append({
                    'product_id': product['product_id'],
                    'score': score,
                    'source': 'content'
                })
        
        return sorted(recommendations, key=lambda x: x['score'], reverse=True)[:top_n]
    
    def knowledge_graph_recommendation(self, user_profile, top_n=5):
        """基于知识图谱的推荐"""
        user_concerns = user_profile.get('concerns', [])
        user_skin_type = user_profile.get('skin_type', '')
        
        recommendations = []
        
        # 从用户关注的问题出发,在图谱中寻找相关产品
        for concern in user_concerns:
            if concern in self.knowledge_graph.nodes():
                # 找到有该功效的产品
                for product_id in self.knowledge_graph.predecessors(concern):
                    if self.knowledge_graph.nodes[product_id]['type'] == 'product':
                        # 检查肤质是否匹配
                        skin_nodes = list(self.knowledge_graph.successors(product_id))
                        skin_types = [node for node in skin_nodes if self.knowledge_graph.nodes[node]['type'] == 'skin_type']
                        
                        if user_skin_type in skin_types:
                            recommendations.append({
                                'product_id': product_id,
                                'score': 2.5,
                                'source': 'knowledge_graph'
                            })
        
        # 去重
        seen = set()
        unique_recommendations = []
        for rec in recommendations:
            if rec['product_id'] not in seen:
                seen.add(rec['product_id'])
                unique_recommendations.append(rec)
        
        return unique_recommendations[:top_n]
    
    def hybrid_recommend(self, user_id, user_profile, weights={'collaborative': 0.4, 'content': 0.3, 'knowledge': 0.3}):
        """混合推荐"""
        # 获取各来源的推荐
        cf_recs = self.collaborative_filtering(user_id)
        content_recs = self.content_based_filtering(user_profile)
        kg_recs = self.knowledge_graph_recommendation(user_profile)
        
        # 合并所有推荐
        all_recommendations = {}
        
        for rec in cf_recs:
            pid = rec['product_id']
            if pid not in all_recommendations:
                all_recommendations[pid] = {'score': 0, 'sources': []}
            all_recommendations[pid]['score'] += rec['score'] * weights['collaborative']
            all_recommendations[pid]['sources'].append('协同过滤')
        
        for rec in content_recs:
            pid = rec['product_id']
            if pid not in all_recommendations:
                all_recommendations[pid] = {'score': 0, 'sources': []}
            all_recommendations[pid]['score'] += rec['score'] * weights['content']
            all_recommendations[pid]['sources'].append('内容匹配')
        
        for rec in kg_recs:
            pid = rec['product_id']
            if pid not in all_recommendations:
                all_recommendations[pid] = {'score': 0, 'sources': []}
            all_recommendations[pid]['score'] += rec['score'] * weights['knowledge']
            all_recommendations[pid]['sources'].append('知识图谱')
        
        # 转换为列表并排序
        final_recommendations = []
        for pid, data in all_recommendations.items():
            product_info = self.product_features[self.product_features['product_id'] == pid].iloc[0]
            final_recommendations.append({
                'product_id': pid,
                'name': product_info['name'],
                'score': data['score'],
                'sources': data['sources'],
                'price': product_info['price'],
                'reason': f"基于{', '.join(data['sources'])}推荐"
            })
        
        return sorted(final_recommendations, key=lambda x: x['score'], reverse=True)

# 使用示例
if __name__ == "__main__":
    system = HybridRecommendationSystem()
    
    # 用户画像
    user_profile = {
        'user_id': 'U1',
        'skin_type': '混合性',
        'concerns': ['控油', '毛孔'],
        'budget_level': '中等',
        'prefer_natural': True
    }
    
    # 获取推荐
    recommendations = system.hybrid_recommend('U1', user_profile)
    
    print("=== 个性化推荐结果 ===")
    for i, rec in enumerate(recommendations, 1):
        print(f"{i}. {rec['name']} (¥{rec['price']})")
        print(f"   推荐理由: {rec['reason']}")
        print(f"   综合评分: {rec['score']:.2f}")
        print()

三、AI驱动的智能客服与咨询

3.1 美妆领域专用聊天机器人

基于大语言模型微调的美妆顾问机器人,能够理解用户需求并提供专业建议。

技术实现:

  • 使用RAG(检索增强生成)技术
  • 结合美妆知识库
  • 支持多轮对话和上下文理解

代码示例:

import json
import re
from typing import List, Dict, Any

class BeautyChatbot:
    def __init__(self):
        # 美妆知识库
        self.knowledge_base = {
            '肤质判断': {
                'patterns': ['我是哪种肤质', '怎么判断肤质', '皮肤类型'],
                'response': '我可以帮您分析肤质。请告诉我:1. 您的皮肤容易出油吗?2. 洗脸后是否紧绷?3. 是否容易泛红?'
            },
            '产品推荐': {
                'patterns': ['推荐', '买什么', '哪个牌子好'],
                'response': '为了更好地推荐,我需要了解:1. 您的肤质?2. 想解决什么问题?3. 预算范围?'
            },
            '使用方法': {
                'patterns': ['怎么用', '使用顺序', '步骤'],
                'response': '基础护肤顺序:1. 洁面 2. 爽肤水 3. 精华 4. 乳液/面霜 5. 防晒(白天)'
            },
            '成分问题': {
                'patterns': ['成分', '含什么', '有酒精吗'],
                'response': '我可以查询产品成分。请告诉我具体产品名称或成分名。'
            }
        }
        
        # 成分知识库
        self.ingredients_db = {
            '玻尿酸': {'功效': '保湿', '适合': '所有肤质', '注意事项': '需配合锁水产品'},
            '视黄醇': {'功效': '抗老', '适合': '耐受性皮肤', '注意事项': '夜间使用,需防晒'},
            '烟酰胺': {'功效': '美白控油', '适合': '油性/混合性', '注意事项': '建立耐受'},
            '水杨酸': {'功效': '去角质', '适合': '油性/痘痘肌', '注意事项': '避免与其他酸类叠加'}
        }
        
        # 对话历史
        self.conversation_history = {}
    
    def analyze_intent(self, message: str) -> str:
        """分析用户意图"""
        message_lower = message.lower()
        
        for intent, data in self.knowledge_base.items():
            for pattern in data['patterns']:
                if pattern in message_lower:
                    return intent
        
        # 默认意图
        if any(word in message_lower for word in ['你好', 'hi', 'hello']):
            return 'greeting'
        elif any(word in message_lower for word in ['谢谢', '感谢']):
            return 'thanks'
        else:
            return 'general'
    
    def extract_entities(self, message: str) -> Dict[str, List[str]]:
        """提取实体信息"""
        entities = {
            'skin_type': [],
            'concerns': [],
            'ingredients': [],
            'products': []
        }
        
        # 肤质关键词
        skin_types = ['干性', '油性', '混合性', '敏感性', '中性']
        for st in skin_types:
            if st in message:
                entities['skin_type'].append(st)
        
        # 问题关键词
        concerns_map = {
            '痘痘': '痘痘', '出油': '出油', '毛孔': '毛孔',
            '干燥': '干燥', '暗沉': '暗沉', '皱纹': '皱纹',
            '泛红': '泛红', '敏感': '敏感'
        }
        for key, value in concerns_map.items():
            if key in message:
                entities['concerns'].append(value)
        
        # 成分关键词
        for ing in self.ingredients_db.keys():
            if ing in message:
                entities['ingredients'].append(ing)
        
        # 产品名称(简单匹配)
        product_keywords = ['精华', '面霜', '乳液', '口红', '粉底']
        for keyword in product_keywords:
            if keyword in message:
                entities['products'].append(keyword)
        
        return entities
    
    def generate_response(self, message: str, user_id: str = 'default') -> str:
        """生成回复"""
        # 记录对话历史
        if user_id not in self.conversation_history:
            self.conversation_history[user_id] = []
        
        # 分析意图
        intent = self.analyze_intent(message)
        entities = self.extract_entities(message)
        
        # 根据意图生成回复
        if intent == 'greeting':
            response = "您好!我是您的美妆AI顾问,有什么可以帮助您的吗?"
        
        elif intent == '肤质判断':
            if entities['skin_type']:
                response = f"根据您的描述,您可能是{'、'.join(entities['skin_type'])}肤质。"
            else:
                response = self.knowledge_base['肤质判断']['response']
        
        elif intent == '产品推荐':
            if entities['concerns'] and entities['skin_type']:
                concerns = '、'.join(entities['concerns'])
                skin = entities['skin_type'][0]
                response = f"针对{skin}肤质的{concerns}问题,我建议:\n"
                
                # 简单推荐逻辑
                if '出油' in entities['concerns']:
                    response += "1. 含有水杨酸或烟酰胺的控油产品\n"
                if '干燥' in entities['concerns']:
                    response += "2. 含有玻尿酸或神经酰胺的保湿产品\n"
                if '痘痘' in entities['concerns']:
                    response += "3. 含有积雪草或茶树精油的舒缓产品\n"
                
                response += "建议您先试用小样,观察皮肤反应。"
            else:
                response = self.knowledge_base['产品推荐']['response']
        
        elif intent == '成分问题':
            if entities['ingredients']:
                ing = entities['ingredients'][0]
                if ing in self.ingredients_db:
                    info = self.ingredients_db[ing]
                    response = f"【{ing}】\n"
                    response += f"功效: {info['功效']}\n"
                    response += f"适合肤质: {info['适合']}\n"
                    response += f"注意事项: {info['注意事项']}"
                else:
                    response = f"暂无{ing}的详细信息。"
            else:
                response = "请告诉我您想查询的成分名称。"
        
        elif intent == 'thanks':
            response = "不客气!如果还有其他美妆问题,随时问我哦~"
        
        else:
            response = "抱歉,我可能没理解您的问题。您可以尝试:\n"
            response += "- 询问肤质判断\n"
            response += "- 描述皮肤问题求推荐\n"
            response += "- 查询成分功效\n"
            response += "- 了解护肤步骤"
        
        # 记录对话
        self.conversation_history[user_id].append({
            'user': message,
            'bot': response,
            'intent': intent,
            'entities': entities
        })
        
        return response
    
    def get_conversation_summary(self, user_id: str) -> str:
        """获取对话总结"""
        if user_id not in self.conversation_history:
            return "暂无对话记录"
        
        history = self.conversation_history[user_id]
        summary = f"共{len(history)}轮对话\n"
        
        # 提取关键信息
        skin_types = set()
        concerns = set()
        
        for turn in history:
            entities = turn['entities']
            skin_types.update(entities['skin_type'])
            concerns.update(entities['concerns'])
        
        if skin_types:
            summary += f"识别肤质: {', '.join(skin_types)}\n"
        if concerns:
            summary += f"关注问题: {', '.join(concerns)}\n"
        
        return summary

# 使用示例
if __name__ == "__main__":
    bot = BeautyChatbot()
    
    # 模拟对话
    messages = [
        "你好",
        "我是混合性皮肤,容易出油和长毛孔,应该用什么产品?",
        "玻尿酸有什么作用?",
        "谢谢"
    ]
    
    print("=== 美妆AI顾问对话演示 ===\n")
    for msg in messages:
        print(f"用户: {msg}")
        response = bot.generate_response(msg, "user001")
        print(f"AI顾问: {response}\n")
    
    # 查看对话总结
    print("=== 对话总结 ===")
    print(bot.get_conversation_summary("user001"))

四、实际应用案例与效果分析

4.1 国际品牌应用实例

欧莱雅集团:

  • ModiFace:收购的AR试妆技术,支持1000+产品虚拟试用
  • Perso:AI驱动的个性化护肤品配方设备
  • 效果:线上转化率提升3倍,用户停留时间增加5倍

雅诗兰黛:

  • AI粉底匹配系统:通过照片分析肤色、肤质,推荐匹配色号
  • 效果:退货率降低40%,客户满意度提升35%

4.2 新兴品牌创新应用

Glossier:

  • 利用AI分析社交媒体数据,洞察Z世代美妆趋势
  • 基于用户UGC内容生成个性化推荐
  • 效果:复购率提升60%,客单价增加45%

Function of Beauty:

  • AI驱动的洗发水定制
  • 用户填写问卷后,机器现场调配
  • 效果:年销售额突破1亿美元,用户留存率75%