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  4. Modurec: Recommender Systems with Feature and Time Modulation
 
conference paper

Modurec: Recommender Systems with Feature and Time Modulation

Maroto Morales, Javier Alejandro  
•
Vignac, Clément  
•
Frossard, Pascal  
October 13, 2020
2021 Ieee International Conference On Acoustics, Speech And Signal Processing (Icassp 2021)
IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP)

Current state of the art algorithms for recommender systems are mainly based on collaborative filtering, which exploits user ratings to discover latent factors in the data. These algorithms unfortunately do not make effective use of other features, which can help solve two well identified problems of collaborative filtering: cold start (not enough data is available for new users or products) and concept shift (the distribution of ratings changes over time). To address these problems, we propose Modurec: an autoencoder-based method that combines all available information using the feature-wise modulation mechanism, which has demonstrated its effectiveness in several fields. While time information helps mitigate the effects of concept shift, the combination of user and item features improve prediction performance when little data is available. We show on Movielens datasets that these modifications produce state-of-the-art results in most evaluated settings compared with standard autoencoder-based methods and other collaborative filtering approaches.

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Type
conference paper
DOI
10.1109/ICASSP39728.2021.9413676
Web of Science ID

WOS:000704288403174

Author(s)
Maroto Morales, Javier Alejandro  
Vignac, Clément  
Frossard, Pascal  
Date Issued

2020-10-13

Publisher

IEEE

Publisher place

New York

Published in
2021 Ieee International Conference On Acoustics, Speech And Signal Processing (Icassp 2021)
ISBN of the book

978-1-728176-05-5

Total of pages

5

Start page

3615

End page

3619

Subjects

recommender system

•

collaborative filtering

•

feature modulation

•

concept drift

•

autoencoder

Editorial or Peer reviewed

REVIEWED

Written at

EPFL

EPFL units
LTS4  
Event nameEvent placeEvent date
IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP)

Toronto, Ontario, Canada

June 6-11, 2021

Available on Infoscience
March 27, 2021
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/176916
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