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2018 | OriginalPaper | Buchkapitel

Online Gradient Boosting for Incremental Recommender Systems

verfasst von : João Vinagre, Alípio Mário Jorge, João Gama

Erschienen in: Discovery Science

Verlag: Springer International Publishing

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Abstract

Ensemble models have been proven successful for batch recommendation algorithms, however they have not been well studied in streaming applications. Such applications typically use incremental learning, to which standard ensemble techniques are not trivially applicable. In this paper, we study the application of three variants of online gradient boosting to top-N recommendation tasks with implicit data, in a streaming data environment. Weak models are built using a simple incremental matrix factorization algorithm for implicit feedback. Our results show a significant improvement of up to 40% over the baseline standalone model. We also show that the overhead of running multiple weak models is easily manageable in stream-based applications.

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Titel: Online Gradient Boosting for Incremental Recommender Systems
verfasst von: João Vinagre
Alípio Mário Jorge
João Gama
Verlag: Springer International Publishing
Buch: Discovery Science
Print ISBN: 978-3-030-01770-5

Electronic ISBN: 978-3-030-01771-2

Copyright-Jahr: 2018
DOI: https://doi.org/10.1007/978-3-030-01771-2_14

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