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Understanding and improving relational matrix factorization in recommender systems

Published: 12 October 2013 Publication History

Abstract

Matrix factorization techniques such as the singular value decomposition (SVD) have had great success in recommender systems. We present a new perspective of SVD for constructing a latent space from the training data, which is justified by the theory of hypergraph model. We show that the vectors representing the items in the latent space can be grouped into (approximately) orthogonal clusters which correspond to the vertex clusters in the co-rating hypergraph, and the lengths of the vectors are indicators of the representativeness of the items. These properties are used for making top-$N$ recommendations in a two-phase algorithm. In this work, we provide a new explanation for the significantly better performance of the asymmetric SVD approaches and a novel algorithm for better diversity in top-N recommendations.

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      cover image ACM Conferences
      RecSys '13: Proceedings of the 7th ACM conference on Recommender systems
      October 2013
      516 pages
      ISBN:9781450324090
      DOI:10.1145/2507157
      • General Chairs:
      • Qiang Yang,
      • Irwin King,
      • Qing Li,
      • Program Chairs:
      • Pearl Pu,
      • George Karypis
      Permission to make digital or hard copies of all or part of this work for personal or classroom use is granted without fee provided that copies are not made or distributed for profit or commercial advantage and that copies bear this notice and the full citation on the first page. Copyrights for components of this work owned by others than ACM must be honored. Abstracting with credit is permitted. To copy otherwise, or republish, to post on servers or to redistribute to lists, requires prior specific permission and/or a fee. Request permissions from [email protected]

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      Published: 12 October 2013

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      Author Tags

      1. hypergraph
      2. matrix factorization
      3. recommender system

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      RecSys '13 Paper Acceptance Rate 32 of 136 submissions, 24%;
      Overall Acceptance Rate 254 of 1,295 submissions, 20%

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      • (2023)Toward Human–AI Collaboration: A Recommender System to Support CS1 Instructors to Select Problems for Assignments and ExamsIEEE Transactions on Learning Technologies10.1109/TLT.2022.322412116:3_Part_2(457-472)Online publication date: 1-Jun-2023
      • (2023)Self-Supervised Learning Recommendation Algorithm Based on Meta-Paths2023 IEEE 5th International Conference on Advanced Information and Communication Technologies (AICT)10.1109/AICT61584.2023.10452672(1-4)Online publication date: 21-Nov-2023
      • (2022)Machine learning-based ABA treatment recommendation and personalization for autism spectrum disorder: an exploratory studyBrain Informatics10.1186/s40708-022-00164-69:1Online publication date: 25-Jul-2022
      • (2022)Learning attention embeddings based on memory networks for neural collaborative recommendation▪Expert Systems with Applications: An International Journal10.1016/j.eswa.2021.115439183:COnline publication date: 3-Jan-2022
      • (2021)How the Multiplicity of Suggested Information Affects the Behavior of a User in a Recommender SystemElectronics10.3390/electronics1006074110:6(741)Online publication date: 20-Mar-2021
      • (2021)Exploiting Temporal Dynamics in Product Reviews for Dynamic Sentiment Prediction at the Aspect LevelACM Transactions on Knowledge Discovery from Data10.1145/344145115:4(1-29)Online publication date: 18-Apr-2021
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      • (2020)A Framework to Strengthen up Business Interests in Students by Using Matrix Factorization on Web LogIntelligent Technologies and Applications10.1007/978-981-15-5232-8_28(322-332)Online publication date: 9-May-2020
      • (2018)Interactive Storytelling for Movie Recommendation through Latent Semantic AnalysisProceedings of the 23rd International Conference on Intelligent User Interfaces10.1145/3172944.3172979(521-533)Online publication date: 5-Mar-2018
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