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Comparing contextual and non-contextual features in ANNs for movie rating prediction

  • Ghulam Mustafa
    ,
  • Ingo Frommholz
Research Output: Chapter in Book/Report/Conference proceeding Conference contribution Peer-review

Open access

Abstract

Contextual recommendation goes beyond traditional models by incorporating additional information. Context aware recommender systems (CARs) correspond to not only the user's preference profile but also consider the given situation and context. However, the selection and incorporation of optimal contextual features in context aware recommender systems is always challenging. In this paper we evaluate different representations (feature sets) from the given dataset (LDOS-CoMoDa) for contextual recommendations, in particular looking into movie rating prediction as a subproblem of recommendation. We further crosscompare these representations to select useful and relevant features and their combination. We also compare the performance of standard matrix factorization to Artificial Neural Networks (ANNs) in CARs. Our evaluation shows that dynamic, contextual features are dominant compared to non-contextual ones for the given task in the given data set.We also show that ANNs slightly outperform matrix factorization approaches typically used in CARs.

Publication Information

Output type

Research Output: Chapter in Book/Report/Conference proceeding Conference contribution Peer-review

Original language

English

Pages from-to (Number of pages)

Pages 361-372

Publication milestones

  • Published - 31/12/2016

Publication status

Published - 31/12/2016

Edition

vol 1670

Volume

1670

Publisher

CEUR-WS, Germany

External Publication IDs

  • handle.net: 10547/624257
  • Scopus: 84988836330

Host publication title

CEUR Workshop Proceedings

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