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Personality in Recommender Systems

Published: 16 September 2015 Publication History

Abstract

The personality-based recommender systems (RS) has emerged as a new type of RS in recent years, given that personality contains valuable information enabling systems to better understand users' preferences [7]. This presentation first gives an overview of the state-of-the-art in this area, including the approaches developed for enhancing collaborative filtering (CF) by computing users' or items' personality similarity [1,4,5,8], as well as the one that incorporates personality into matrix factorization to predict items that users are able to rate for active learning [3].
We then discuss several open issues. One issue is how to utilize personality to improve recommendation diversity. Diversity refers to the system's ability in returning different items in one set, which may help users more effectively explore the product space and discover unexpected items [6]. Our recent studies identified the effect of personality on users' diversity differences [2], and demonstrated that people perceive the system, which considers personality in adjusting recommendations' diversity degree, more competent and satisfying [9].
We also show how to acquire personality through unobtrusive and implicit way, so as to save users' efforts in answering personality quizzes. Through testing an inference model in movie domain that unifies both types of domain-dependent and -independent features for deriving users' personality from their behavior, we proved that the implicitly inferred personality can also be helpful to augment the system's recommendation accuracy [10].
Other open issues include how to develop personality-based cross domain RS for addressing the critical cold-start problem, how to exploit the influence of personality on users' emotions for boosting context-aware RS, and how to elicit more domain-independent features for generalizing the personality inference procedure.

References

[1]
Alharthi, H. 2015. The Use of Items Personality Profiles in Recommender Systems. Master Thesis, University of Ottawa.
[2]
Chen, L., Wu, W., and He, L. 2013. How personality influences users' needs for recommendation diversity? In CHI EA'13, 829--834.
[3]
Elahi, M., Braunhofer, M., Ricci, F., and Tkalcic, M. 2013. Personality-based active learning for collaborative filtering recommender systems. In AI* IA'13, 360--371.
[4]
Fernández-Tobías, I. and Cantador, I. 2014. Personality-aware collaborative filtering: An empirical study in multiple domains with Facebook data. In EC-Web'14, 125--137.
[5]
Hu, R. and Pu, P. 2011. Enhancing collaborative filtering systems with personality information. In RecSys '11, 197--204.
[6]
McNee, S.M., Riedl, J., and Konstan, J.A. 2006. Being accurate is not enough: How accuracy metrics have hurt recommender systems. In CHI EA'06, 1097--1101.
[7]
Nunes, M.A.S.N. and Hu, R. 2012. Personality-based recommender systems: An overview. In RecSys '12, 5--6.
[8]
Tkalcic, M., Kunaver, M., Tasic, J., and Kosir, A. 2009. Personality based user similarity measure for a collaborative recommender system. In Proc. of the 5th Workshop on Emotion in Human-Computer Interaction-Real world Challenges, 30--37.
[9]
Wu, W., Chen, L., and He, L. 2013. Using personality to adjust diversity in recommender systems. In HT'13, 225--229.
[10]
Wu, W. and Chen, L. 2015. Implicit acquisition of user personality for augmenting movie recommendations. In UMAP'15, 302--314.

Cited By

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  • (2020)A Comparative Study of Machine Learning Approaches for Recommending University Faculty2020 2nd International Conference on Sustainable Technologies for Industry 4.0 (STI)10.1109/STI50764.2020.9350461(1-6)Online publication date: 19-Dec-2020

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EMPIRE '15: Proceedings of the 3rd Workshop on Emotions and Personality in Personalized Systems 2015
September 2015
45 pages
ISBN:9781450336154
DOI:10.1145/2809643
Permission to make digital or hard copies of part or all 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 third-party components of this work must be honored. For all other uses, contact the Owner/Author.

In-Cooperation

  • University of Ljubljana: University of Ljubljana
  • Johannes Kepler University

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Association for Computing Machinery

New York, NY, United States

Publication History

Published: 16 September 2015

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Author Tags

  1. Recommender systems
  2. collaborative filtering
  3. user personality

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  • Invited-talk
  • Research
  • Refereed limited

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EMPIRE '15

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EMPIRE '15 Paper Acceptance Rate 6 of 9 submissions, 67%;
Overall Acceptance Rate 6 of 9 submissions, 67%

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  • (2020)A Comparative Study of Machine Learning Approaches for Recommending University Faculty2020 2nd International Conference on Sustainable Technologies for Industry 4.0 (STI)10.1109/STI50764.2020.9350461(1-6)Online publication date: 19-Dec-2020

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