融合观看序列与评分数据,动态加权推荐更精准电影。
Post-fusion monolithic hybrid recommender system for suggesting relevant movies to users
- 后融合双路径:结合用户观影序列与评分数据
- 根据数据完整度动态调整权重,提升推荐适应性
- 适合评分稀疏场景,兼顾短期行为与长期偏好
推荐系统已成为帮助用户获取信息的核心服务。传统方法通过过滤历史行为来理解用户偏好。随着在线信息增长,推荐在缓解信息过载中愈发关键。本文提出一种混合后融合推荐框架,结合用户观看电影序列与相关影片评分数据。通过引入权重矩阵,根据使用场景动态调整两部分贡献:当多数影片有评分时,提高评分矩阵权重;当评分缺失较多时,则侧重观看序列。研究指出,仅依赖序列模型难以区分用户长期偏好,且忽略实际评分信息,单独使用效果有限。本文对相关文献与方法进行了深入探讨,强调双源融合的必要性与灵活性。
原文摘要 · Abstract (English)
Recommendation systems have become the fundamental services to facilitate users information access. Generally, recommendation system works by filtering historical behaviors to understand and learn users preferences. With the growth of online information, recommendations have become of crucial importance in information filtering to prevent the information overload problem. In this study, we considered hybrid post-fusion of two approaches of collaborative filtering, by using sequences of watched movies and considering the related movies rating. After considering both techniques and applying the weights matrix, the recommendations would be modified to correspond to the users preference as needed. We discussed that various weights would be set based on use cases. For instance, in cases where we have the rating for most classes, we will assign a higher weight to the rating matrix and in case where the rating is unavailable for the majority of cases, the higher weights might be assigned to the sequential dataset. An extensive discussion is made in the context of this paper. Sequential type of the watched movies was used in conjunction of the rating as especially that model might be inadequate in distinguishing users long-term preference and that does not account for the rating of the watched movies and thus that model along might not suffice. Extensive discussion was made regarding the literature and methodological approach to solve the problem.
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