论文标题

一种基于内容特征关系增强纯协作过滤的混合方法

A Hybrid Approach to Enhance Pure Collaborative Filtering based on Content Feature Relationship

论文作者

Mehrabani, Mohammad Maghsoudi, Mohayeji, Hamid, Moeini, Ali

论文摘要

由于其在学术社区和行业中的应用,推荐系统具有扩大的意义。随着开发其他数据源和提取新信息以外的新信息的方法,除了商品的评级历史记录之外,混合建议算法通常将某些方法合并为提高性能,并且已经普遍存在。在这项工作中,我们首先引入了一种新颖的方法,以使用自然语言处理域(即Word2Vec)中的一种知名方法来提取内容特征之间的隐式关系。与Word2Vec的典型使用相反,我们利用项目的某些特征作为句子的单词来产生神经特征嵌入,通过该单词,我们可以通过该单词来计算功能之间的相似性。接下来,我们提出了一个基于内容的新型建议系统,该系统采用关系来确定可以计算项目之间相似性的项目的向量表示(relfSIM)。我们的评估结果表明,它可以预测用户对一组纯协作过滤的项目的偏好。这种基于内容的算法还嵌入了基于纯的项目的协作过滤算法中,以解决冷启动问题并提高其准确性。我们在基准电影数据集上进行的实验证实了所提出的方法提高了系统的准确性。

Recommendation systems get expanding significance because of their applications in both the scholarly community and industry. With the development of additional data sources and methods of extracting new information other than the rating history of clients on items, hybrid recommendation algorithms, in which some methods have usually been combined to improve performance, have become pervasive. In this work, we first introduce a novel method to extract the implicit relationship between content features using a sort of well-known methods from the natural language processing domain, namely Word2Vec. In contrast to the typical use of Word2Vec, we utilize some features of items as words of sentences to produce neural feature embeddings, through which we can calculate the similarity between features. Next, we propose a novel content-based recommendation system that employs the relationship to determine vector representations for items by which the similarity between items can be computed (RELFsim). Our evaluation results demonstrate that it can predict the preference a user would have for a set of items as good as pure collaborative filtering. This content-based algorithm is also embedded in a pure item-based collaborative filtering algorithm to deal with the cold-start problem and enhance its accuracy. Our experiments on a benchmark movie dataset corroborate that the proposed approach improves the accuracy of the system.

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