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Dynamics of movie competition and popularity spreading in recommender systems

Yeung, C. H. and Cimini, Giulio and Jin, C.-H. Dynamics of movie competition and popularity spreading in recommender systems. Physical Review E, 83. 016105. ISSN 1539-3755 (2011)

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We introduce a simple model to study movie competition in recommender systems. Movies of heterogeneous quality compete against each other through viewers’ reviews and generate interesting dynamics at the box office. By assuming mean-field interactions between the competing movies, we show that the runaway effect of popularity spreading is triggered by defeating the average review score, leading to box-office hits: Popularity rises and peaks before fade-out. The average review score thus characterizes the critical movie quality necessary for transition from box-office bombs to blockbusters. The major factors affecting the critical review score are examined. By iterating the mean-field dynamical equations, we obtain qualitative agreements with simulations and real systems in the dynamical box-office forms, revealing the significant role of competition in understanding box-office dynamics.

Item Type: Article
Identification Number: 10.1103/PhysRevE.83.016105
Subjects: Q Science > QA Mathematics
Q Science > QC Physics
Research Area: Economics and Institutional Change
Depositing User: Caterina Tangheroni
Date Deposited: 06 Nov 2015 10:51
Last Modified: 06 Nov 2015 10:51
URI: http://eprints.imtlucca.it/id/eprint/2838

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