NDLI: Attentive Collaborative Filtering: Multimedia Recommendation with Item- and Component-Level Attention

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Attentive Collaborative Filtering: Multimedia Recommendation with Item- and Component-Level Attention

Content Provider	ACM Digital Library
Author	Chen, Jingyuan Chua, Tat-Seng He, Xiangnan Nie, Liqiang Liu, Wei Zhang, Hanwang
Abstract	Multimedia content is dominating today's Web information. The nature of multimedia user-item interactions is 1/0 binary implicit feedback (e.g., photo likes, video views, song downloads, etc.), which can be collected at a larger scale with a much lower cost than explicit feedback (e.g., product ratings). However, the majority of existing collaborative filtering (CF) systems are not well-designed for multimedia recommendation, since they ignore the implicitness in users' interactions with multimedia content. We argue that, in multimedia recommendation, there exists item- and component-level implicitness which blurs the underlying users' preferences. The item-level implicitness means that users' preferences on items (e.g. photos, videos, songs, etc.) are unknown, while the component-level implicitness means that inside each item users' preferences on different components (e.g. regions in an image, frames of a video, etc.) are unknown. For example, a 'view'' on a video does not provide any specific information about how the user likes the video (i.e.item-level) and which parts of the video the user is interested in (i.e.component-level). In this paper, we introduce a novel attention mechanism in CF to address the challenging item- and component-level implicit feedback in multimedia recommendation, dubbed Attentive Collaborative Filtering (ACF). Specifically, our attention model is a neural network that consists of two attention modules: the component-level attention module, starting from any content feature extraction network (e.g. CNN for images/videos), which learns to select informative components of multimedia items, and the item-level attention module, which learns to score the item preferences. ACF can be seamlessly incorporated into classic CF models with implicit feedback, such as BPR and SVD++, and efficiently trained using SGD. Through extensive experiments on two real-world multimedia Web services: Vine and Pinterest, we show that ACF significantly outperforms state-of-the-art CF methods.
Starting Page	335
Ending Page	344
Page Count	10
File Format	PDF
ISBN	9781450350228
DOI	10.1145/3077136.3080797
Language	English
Publisher	Association for Computing Machinery (ACM)
Publisher Date	2017-08-07
Publisher Place	New York
Access Restriction	Subscribed
Subject Keyword	Collaborative filtering Implicit feedback Multimedia recommendation Attention
Content Type	Text
Resource Type	Article

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