Improving News Recommendation via Bottlenecked Multi-task Pre-training
Pages 2082 - 2086
Abstract
Recent years have witnessed the boom of deep neural networks in online news recommendation service. As news articles mainly consist of textual content, pre-trained language models~(PLMs) (e.g. BERT) have been widely adopted as the backbone to encode them into news embeddings, which would be utilized to generate the user representations or perform the semantic matching. However, existing PLMs are mostly pre-trained on large-scale general corpus, and have not been specially adapted for capturing the rich information within news articles. Therefore, their produced news embeddings may be not informative enough to represent the news content or characterize the relations among news. To solve it, we propose a bottlenecked multi-task pre-training approach, which relies on an information-bottleneck encoder-decoder architecture to compress the useful semantic information into the news embedding. Concretely, we design three pre-training tasks, to enforce the news embedding to recover the news contents of itself, its frequently oc-occurring neighbours, and the news with similar topics. We conduct experiments on the MIND dataset and show that our approach can outperform competitive pre-training methods.
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Index Terms
- Improving News Recommendation via Bottlenecked Multi-task Pre-training
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Published In
July 2023
3567 pages
ISBN:9781450394086
DOI:10.1145/3539618
- General Chairs:
- Hsin-Hsi Chen,
- Wei-Jou (Edward) Duh,
- Hen-Hsen Huang,
- Program Chairs:
- Makoto P. Kato,
- Josiane Mothe,
- Barbara Poblete
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Published: 18 July 2023
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SIGIR '23: The 46th International ACM SIGIR Conference on Research and Development in Information Retrieval
July 23 - 27, 2023
Taipei, Taiwan
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