Journal
INFORMATION SCIENCES
Volume 589, Issue -, Pages 670-689Publisher
ELSEVIER SCIENCE INC
DOI: 10.1016/j.ins.2021.12.105
Keywords
Temporal-spatial three-way decision; Granular computing; Multi-granularity decision; Cost-sensitive; Sequential recommender system
Categories
Funding
- National Science Foundation of China [61876157, 71571148, 61773324]
- Science Fund for Distinguished Young Scholars of Sichuan Province [22JCQN0135]
- Chongqing Key Laboratory Project of Computational Intelligence [2020FF03]
- Sichuan Key Laboratory Project of Service Science and Innovation [KL2102]
- Yanghua Scholar Plan (Part A) of SWJTU
Ask authors/readers for more resources
This paper proposes a novel sequential recommendation strategy from the temporal-spatial perspective, which constructs multilevel recommendation information using recurrent neural network and achieves multi-step recommendation through a temporal-spatial three-way recommendation strategy. A temporal-spatial three-way recommendation based on recurrent neural network is further proposed to realize recommendation with lower decision cost.
In considering of the dynamic variations of user's preference and item's popularity, sequential recommender system (RS) has attracted much attention in recent years. In general, the sequential interactions between users and items will lead to both multilevel recommendation information (RI) in the space dimension and multi-step recommendation in the time dimension. To better capture the dynamic variations of user's preference and reduce the recommendation cost, this paper proposes a novel sequential recommendation strategy from the temporal-spatial perspective. Firstly, in view of the temporality of user-item interactions, we design a granulation method based on recurrent neural network (RNN) to construct the multilevel RI. Then, in the light of the temporality of user's preference and item's popularity, we present a temporal-spatial three-way recommendation strategy (TS3WR) to realize the multi-step recommendation. Finally, by integrating the time factor with space factor, a temporal-spatial three-way recommendation based on recurrent neural network (RNN-TS3WR) is proposed to realize the recommendation with lower decision cost. Extensive experiments on three Movielens datasets verify the feasibility and effectiveness of our proposed methods, and demonstrate the advantage of our recommendation strategy in both recommendation cost and recommendation quality. (C) 2021 Elsevier Inc. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available