Cited by 29Recommender Systems and TechniquesInformation Retrieval and Data MiningInformation Retrieval and Search Behavior

An Item-Item Collaborative Filtering Recommender System Using Trust and Genre to Address the Cold-Start Problem

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Hasan, Mahamudul, Roy, Falguni·2019·Big Data and Cognitive Computing

Abstract

Item-based collaborative filtering is one of the most popular techniques in the recommender system to retrieve useful items for the users by finding the correlation among the items. Traditional item-based collaborative filtering works well when there exists sufficient rating data but cannot calculate similarity for new items, known as a cold-start problem. Usually, for the lack of rating data, the identification of the similarity among the cold-start items is difficult. As a result, existing techniques fail to predict accurate recommendations for cold-start items which also affects the recommender system’s performance. In this paper, two item-based similarity measures have been designed to overcome this problem by incorporating items’ genre data. An item might be uniform to other items as they might belong to more than one common genre. Thus, one of the similarity measures is defined by determining the degree of direct asymmetric correlation between items by considering their association of common genres. However, the similarity is determined between a couple of items where one of the items could be cold-start and another could be any highly rated item. Thus, the proposed similarity measure is accounted for as asymmetric by taking consideration of the item’s rating data. Another similarity measure is defined as the relative interconnection between items based on transitive inference. In addition, an enhanced prediction algorithm has been proposed so that it can calculate a better prediction for the recommendation. The proposed approach has experimented with two popular datasets that is Movielens and MovieTweets. In addition, it is found that the proposed technique performs better in comparison with the traditional techniques in a collaborative filtering recommender system. The proposed approach improved prediction accuracy for Movielens and MovieTweets approximately in terms of 3.42% & 8.58% mean absolute error, 7.25% & 3.29% precision, 7.20% & 7.55% recall, 8.76% & 5.15% f-measure and 49.3% and 16.49% mean reciprocal rank, respectively.

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  1. Craswell, N. Mean Reciprocal Rank; Liu, L., ÖZsu, M.T., Eds.; Springer: Boston, MA, USA, 2009; p. 1703. [CrossRef] · DOI

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Authors
Hasan, M., & Roy, F.
Affiliations
  • East West University (BD)
  • Noakhali Science and Technology University (BD)
Corresponding author
Hasan, Mahamudul
Venue
Big Data and Cognitive Computing
Publisher
MDPI AG
Published
2019-07-08
Volume
3
Issue
3
Pages
39
ISSN
2504-2289 (ISSN-L)
OpenAlex
W2955322667
Cited by
28
References
44
Citations by year
2026: 1 · 2025: 2 · 2024: 3 · 2023: 6 · 2022: 8 · 2021: 5 · 2020: 3
FWCI
4.98
Type
journal article
Language
en
Open access
Locations
  • Big Data and Cognitive Computing (publishedVersion, cc-by)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
Topics
  • Physical Sciences › Computer Science › Information Systems › Recommender Systems and Techniques
  • Physical Sciences › Computer Science › Information Systems › Information Retrieval and Data Mining
  • Physical Sciences › Computer Science › Information Systems › Information Retrieval and Search Behavior
Keywords
item-based collaborative filtering, cold start, asymmetric correlation, transitive inference, recommendation prediction, trust-based recommendation, movie recommendation, MovieLens

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