Daily-Aware personalized recommendation based on feature-level time series analysis

Yongfeng Zhang, Min Zhang, Yi Zhang, Guokun Lai, Yiqun Liu, Honghui Zhang, Shaoping Ma

Research output: Chapter in Book/Report/Conference proceedingConference contribution

57 Scopus citations

Abstract

The frequently changing user preferences and/or item pro-files have put essential importance on the dynamic modeling of users and items in personalized recommender systems. However, due to the insufficiency of per user/item records when splitting the already sparse data across time dimen-sion, previous methods have to restrict the drifting purchas-ing patterns to pre-Assumed distributions, and were hardly able to model them rather directly with, for example, time series analysis. Integrating content information helps to al-leviate the problem in practical systems, but the domain-dependent content knowledge is expensive to obtain due to the large amount of manual efforts. In this paper, we make use of the large volume of textual reviews for the automatic extraction of domain knowledge, namely, the explicit features/aspects in a specific product domain. We thus degrade the product-level modeling of user preferences, which suffers from the lack of data, to the feature-level modeling, which not only grants us the ability to predict user preferences through direct time series analy-sis, but also allows us to know the essence under the surface of product-level changes in purchasing patterns. Besides, the expanded feature space also helps to make cold-start recommendations for users with few purchasing records. Technically, we develop the Fourier-Assisted Auto-Regressive IntegratedMoving Average (FARIMA) process to tackle with the year-long seasonal period of purchasing data to achieve daily-Aware preference predictions, and we leverage the con-ditional opportunity models for daily-Aware personalized rec-ommendation. Extensive experimental results on real-world cosmetic purchasing data from a major e-commerce website (JD.com) in China verified both the effectiveness and effciency of our approach.

Original languageEnglish (US)
Title of host publicationWWW 2015 - Proceedings of the 24th International Conference on World Wide Web
PublisherAssociation for Computing Machinery, Inc
Pages1373-1383
Number of pages11
ISBN (Electronic)9781450334693
DOIs
StatePublished - May 18 2015
Externally publishedYes
Event24th International Conference on World Wide Web, WWW 2015 - Florence, Italy
Duration: May 18 2015May 22 2015

Publication series

NameWWW 2015 - Proceedings of the 24th International Conference on World Wide Web

Other

Other24th International Conference on World Wide Web, WWW 2015
Country/TerritoryItaly
CityFlorence
Period5/18/155/22/15

All Science Journal Classification (ASJC) codes

  • Computer Networks and Communications
  • Software

Keywords

  • Collaborative Filtering
  • Recommender Systems
  • Sentiment Analysis
  • Time Series Analysis

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