双十二点播推荐

import pandas as pd
from sklearn.feature_extraction.text import TfidfVectorizer
from sklearn.metrics.pairwise import linear_kernel

# 假设我们有一个包含视频信息的DataFrame
videos = pd.DataFrame({
    'title': ['Video A', 'Video B', 'Video C'],
    'description': ['Description of Video A', 'Description of Video B', 'Description of Video C']
})

# 使用TF-IDF向量化视频描述
tfidf = TfidfVectorizer(stop_words='english')
videos['description'] = videos['description'].fillna('')
tfidf_matrix = tfidf.fit_transform(videos['description'])

# 计算视频之间的相似度
cosine_sim = linear_kernel(tfidf_matrix, tfidf_matrix)

# 推荐函数
def get_recommendations(title, cosine_sim=cosine_sim):
    idx = videos.index[videos['title'] == title].tolist()[0]
    sim_scores = list(enumerate(cosine_sim[idx]))
    sim_scores = sorted(sim_scores, key=lambda x: x[1], reverse=True)
    sim_scores = sim_scores[1:3]  # 获取最相似的两个视频
    video_indices = [i[0] for i in sim_scores]
    return videos['title'].iloc[video_indices]

# 示例调用
print(get_recommendations('Video A'))