• Complex
  • Title
  • Keyword
  • Abstract
  • Scholars
  • Journal
  • ISSN
  • Conference
搜索

Author:

Zhang, Wen (Zhang, Wen.) (Scholars:张文) | Wang, Qiang (Wang, Qiang.) | Yoshida, Taketoshi (Yoshida, Taketoshi.) | Li, Jian (Li, Jian.)

Indexed by:

EI Scopus SCIE

Abstract:

Recommendation system has attracted large amount of attention in the field of E-commerce research. Traditional MF (Matrix Factorization) methods take a global view on the user-item rating matrix to derive latent user vectors and latent item vectors for rating prediction. However, there is an inherent structure in the user-item rating matrix and a local correspondence between user clusters and item clusters as the users induce the items and the items imply the users in a recommendation system. Motivated by this observation, this paper proposes a novel rating prediction approach called RP-LGMC (Rating Prediction based on Local and Global information with Matrix Clustering) based on matrix factorization by making use of the local correspondence between user clusters and item clusters. The RP-LGMC approach consists of three components. The first component is to partition the user-item rating matrix into small blocks by the sparse subspace clustering (SCC) algorithm with co-clustering its rows (users) and columns (items) simultaneously. The second component is local distillation to extract those dense and stable blocks by thresholding block density and standard deviation. The third component is to predict the ratings with residual approximation on the local blocks and SVD++ on the global blocks of the original user-item matrixR. The RP-LGMC approach can not only reduce the data sparsity but also increase the computation scalability. Experiments on the MovieLens-25 M dataset demonstrate that the proposed RP-LGMC approach performs better than most state-of-the-art methods in terms of recommendation accuracy and has lower computation complexity than the SVD++ algorithm. (C) 2021 Published by Elsevier Ltd.

Keyword:

Local information Sparse subspace clustering Rating prediction Global information Residual approximation

Author Community:

  • [ 1 ] [Zhang, Wen]Beijing Univ Technol, Coll Econ & Management, Res Base Beijing Modern Mfg Dev, Beijing 100124, Peoples R China
  • [ 2 ] [Wang, Qiang]Beijing Univ Technol, Coll Econ & Management, Res Base Beijing Modern Mfg Dev, Beijing 100124, Peoples R China
  • [ 3 ] [Li, Jian]Beijing Univ Technol, Coll Econ & Management, Res Base Beijing Modern Mfg Dev, Beijing 100124, Peoples R China
  • [ 4 ] [Yoshida, Taketoshi]Japan Adv Inst Sci & Technol, Sch Knowledge Sci, 1-1 Ashahidai, Nomi City, Ishikawa 9231292, Japan

Reprint Author's Address:

  • [Li, Jian]Beijing Univ Technol, Coll Econ & Management, Res Base Beijing Modern Mfg Dev, Beijing 100124, Peoples R China

Show more details

Related Keywords:

Source :

COMPUTERS & OPERATIONS RESEARCH

ISSN: 0305-0548

Year: 2021

Volume: 129

4 . 6 0 0

JCR@2022

ESI Discipline: COMPUTER SCIENCE;

ESI HC Threshold:87

JCR Journal Grade:1

Cited Count:

WoS CC Cited Count: 2

SCOPUS Cited Count: 6

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 9

Online/Total:620/10710289
Address:BJUT Library(100 Pingleyuan,Chaoyang District,Beijing 100124, China Post Code:100124) Contact Us:010-67392185
Copyright:BJUT Library Technical Support:Beijing Aegean Software Co., Ltd.