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A Novel Hybrid Sequential Model for Review-Based Rating Prediction

  • Yuanquan Lu
  • Wei ZhangEmail author
  • Pan Lu
  • Jianyong Wang
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 11439)

Abstract

Nowadays, the online interactions between users and items become diverse, and may include textual reviews as well as numerical ratings. Reviews often express various opinions and sentiments, which can alleviate the sparsity problem of recommendations to some extent. In this paper, we address the personalized review-based rating prediction problem, namely, leveraging users’ historical reviews and corresponding ratings to predict their future ratings for items they have not interacted with before. While much effort has been devoted to this challenging problem mainly to investigate how to jointly model natural text and user personalization, most of them ignored sequential characteristics hidden in users’ review and rating sequences. To bridge this gap, we propose a novel Hybrid Review-based Sequential Model (HRSM) to capture future trajectories of users and items. This is achieved by feeding both users’ and items’ review sequences to a Long Short-Term Memory (LSTM) model that captures dynamics, in addition to incorporating a more traditional low-rank factorization that captures stationary states. The experimental results on real public datasets demonstrate that our model outperforms the state-of-the-art baselines.

Keywords

Recommender systems Rating prediction Review analysis Sequential model 

Notes

Acknowledgement

This work was supported in part by National Natural Science Foundation of China under Grant No. 61532010 and 61521002. We also thank Yifeng Zhao and Ning Liu for helpful discussions.

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Copyright information

© Springer Nature Switzerland AG 2019

Authors and Affiliations

  1. 1.Tsinghua UniversityBeijingChina
  2. 2.East China Normal UniversityShanghaiChina

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