Diversified Coverage based Tag Recommendation
نویسندگان
چکیده
Tag recommendation, as a branch of recommendation engine, has drawn more and more attention, which is also extensively exploited in e-commerce and SNS (Social Networking Services). The results generated by the current algorithms could describe the items with a high relevance. However, they are often of poor diversity in the recommended results. That indicates there is a redundancy in the results in term of semantics. Such a case reduces the novelty and diversity of the recommended results, seriously affecting the user’s experience. In this paper, we define the tag correlation metric based on the local and global tag co-occurrence matrices, which improves the recommendation accuracy by incorporating both the user’s interests and the popularity of tags. Moreover, we propose the concept of semantic coverage, by which the redundancy of semantics can be removed efficiently. To our best knowledge, it is first proposed in the context of tag recommendation. Finally, a diversified coverage based tag recommendation algorithm, namely EDC, is developed. By converting the problem of diversified coverage tag recommendation to the MIDS (Minimum Independent Dominating Set) problem, EDC first handles the cliques and the bipartites in the graph. Then, it recursively searches the MIDSs in the remaining graph. Further, a greedy algorithm GDC is proposed. The experiments conducted on the real datasets of MovieLens and Last.fm show that the proposed EDC and GDC improve the diversity significantly.
منابع مشابه
Automatic Hashtag Recommendation in Social Networking and Microblogging Platforms Using a Knowledge-Intensive Content-based Approach
In social networking/microblogging environments, #tag is often used for categorizing messages and marking their key points. Also, since some social networks such as twitter apply restrictions on the number of characters in messages, #tags can serve as a useful tool for helping users express their messages. In this paper, a new knowledge-intensive content-based #tag recommendation system is intr...
متن کاملSemantics and Relativity Expansion Based on Tag Recommendation with Time Degradation
With the rapid development of the Intemet, information overload and isotropic becomes worse and worse. Personalized services system’s birth partly resolved this problem. The traditional recommendation methods, such as content based recommendation and collaborative filtering, do help a lot. However, to some extent, it couldn’t authentically understand the preference of users. Considered the limi...
متن کاملResearch on Tag-based Collaborative Filtering Strategy
Recommendation technology is designed to take the initiative to recommend using the user's history behavior information, without requiring users to explicitly specify the query case information. Collaborative filtering is the most widely recommended technique. However, some problems of the traditional collaborative filtering recommendation system still exist, and these problems significantly af...
متن کاملUse of Semantic Similarity and Web Usage Mining to Alleviate the Drawbacks of User-Based Collaborative Filtering Recommender Systems
One of the most famous methods for recommendation is user-based Collaborative Filtering (CF). This system compares active user’s items rating with historical rating records of other users to find similar users and recommending items which seems interesting to these similar users and have not been rated by the active user. As a way of computing recommendations, the ultimate goal of the user-ba...
متن کاملAdapting K-Nearest Neighbor for Tag Recommendation in Folksonomies
Folksonomies, otherwise known as Collaborative Tagging Systems, enable Internet users to share, annotate and search for online resources with user selected labels called tags. Tag recommendation, the suggestion of an ordered set of tags during the annotation process, reduces the user effort from a keyboard entry to a mouse click. By simplifying the annotation process tagging is promoted, noise ...
متن کامل