In this section
Several of our current PhD candidates and fellow researchers at the Data Science Institute have published, or in the proccess of publishing, papers to present their research.
@article{Wang:2022:10.1016/j.eswa.2022.117552,
author = {Wang, Z and Chen, J and Rosas, FE and Zhu, T},
doi = {10.1016/j.eswa.2022.117552},
journal = {Expert Systems with Applications},
pages = {117552--117552},
title = {A hypergraph-based framework for personalized recommendations via user preference and dynamics clustering},
url = {http://dx.doi.org/10.1016/j.eswa.2022.117552},
volume = {204},
year = {2022}
}
TY - JOUR
AB - The ever-increasing number of users and items continuously imposes new challenges to existent clustering-based recommendation algorithms. To better simulate the interactions between users and items in the recommendation system, in this paper, we propose a collaborative filtering recommendation algorithm based on dynamics clustering and similarity measurement in hypergraphs (Hg-PDC). The main idea of Hg-PDC is to discover several interest communities by aggregating users with high attention, and make recommendations within each community, thereby improving the recommendation performance and reducing the time cost. Firstly, we introduce a hypergraph model to capture complex relations beyond pairwise relations, while preserving attention relations in the network. In addition, we construct a novel hypergraph model, which defines a user and his evaluated items to form a hyperedge. Secondly, an extended game dynamics clustering method is proposed for the constructed hypergraph to aggregate users with high attention into the same interest community. Here, we combine the payoff function in game theory with the traditional dynamics clustering method. Finally, we apply the dynamics clustering results and a new similarity measurement strategy with user preferences to recommend items for target users. The effectiveness of Hg-PDC is verified by experiments on six real datasets. Experimental results illustrate that our algorithm outperforms state-of-the-art algorithms in prediction errors and recommendation performance.
AU - Wang,Z
AU - Chen,J
AU - Rosas,FE
AU - Zhu,T
DO - 10.1016/j.eswa.2022.117552
EP - 117552
PY - 2022///
SN - 0957-4174
SP - 117552
TI - A hypergraph-based framework for personalized recommendations via user preference and dynamics clustering
T2 - Expert Systems with Applications
UR - http://dx.doi.org/10.1016/j.eswa.2022.117552
UR - https://www.sciencedirect.com/science/article/pii/S0957417422008703?via%3Dihub
VL - 204
ER -
Data Science Institute
William Penney Laboratory
Imperial College London
South Kensington Campus
London SW7 2AZ
United Kingdom
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