Publication Type

Conference Proceeding Article

Version

publishedVersion

Publication Date

4-2017

Abstract

In recent years, deep neural networks have yielded immense success on speech recognition, computer vision and natural language processing. However, the exploration of deep neural networks on recommender systems has received relatively less scrutiny. In this work, we strive to develop techniques based on neural networks to tackle the key problem in recommendation --- collaborative filtering --- on the basis of implicit feedback.Although some recent work has employed deep learning for recommendation, they primarily used it to model auxiliary information, such as textual descriptions of items and acoustic features of musics. When it comes to model the key factor in collaborative filtering --- the interaction between user and item features, they still resorted to matrix factorization and applied an inner product on the latent features of users and items.By replacing the inner product with a neural architecture that can learn an arbitrary function from data, we present a general framework named NCF, short for Neural network-based Collaborative Filtering. NCF is generic and can express and generalize matrix factorization under its framework. To supercharge NCF modelling with non-linearities, we propose to leverage a multi-layer perceptron to learn the user-item interaction function. Extensive experiments on two real-world datasets show significant improvements of our proposed NCF framework over the state-of-the-art methods. Empirical evidence shows that using deeper layers of neural networks offers better recommendation performance.

Keywords

Collaborative filtering, Neural networks, Deep learning, Matrix factorization, Implicit feedback

Discipline

Computer Engineering

Research Areas

Intelligent Systems and Optimization

Publication

Proceedings of the 26th International Conference on World Wide Web, Perth, Australia, 2017 April 3 - 7

First Page

173

Last Page

182

ISBN

9781450349130

Identifier

10.1145/3038912.3052569

Publisher

International World Wide Web Conferences Steering Committee

City or Country

Republic and Canton of Geneva, Switzerland

Additional URL

https://doi.org/10.1145/3038912.3052569

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