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        <title>Hierarchical Transformers for Multi-Document Summarization</title>
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            <namePart type="given">Anna</namePart>
            <namePart type="family">Korhonen</namePart>
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    <abstract>In this paper, we develop a neural summarization model which can effectively process multiple input documents and distill Transformer architecture with the ability to encode documents in a hierarchical manner. We represent cross-document relationships via an attention mechanism which allows to share information as opposed to simply concatenating text spans and processing them as a flat sequence. Our model learns latent dependencies among textual units, but can also take advantage of explicit graph representations focusing on similarity or discourse relations. Empirical results on the WikiSum dataset demonstrate that the proposed architecture brings substantial improvements over several strong baselines.</abstract>
    <identifier type="citekey">liu-lapata-2019-hierarchical</identifier>
    <identifier type="doi">10.18653/v1/P19-1500</identifier>
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%0 Conference Proceedings
%T Hierarchical Transformers for Multi-Document Summarization
%A Liu, Yang
%A Lapata, Mirella
%Y Korhonen, Anna
%Y Traum, David
%Y Màrquez, Lluís
%S Proceedings of the 57th Annual Meeting of the Association for Computational Linguistics
%D 2019
%8 July
%I Association for Computational Linguistics
%C Florence, Italy
%F liu-lapata-2019-hierarchical
%X In this paper, we develop a neural summarization model which can effectively process multiple input documents and distill Transformer architecture with the ability to encode documents in a hierarchical manner. We represent cross-document relationships via an attention mechanism which allows to share information as opposed to simply concatenating text spans and processing them as a flat sequence. Our model learns latent dependencies among textual units, but can also take advantage of explicit graph representations focusing on similarity or discourse relations. Empirical results on the WikiSum dataset demonstrate that the proposed architecture brings substantial improvements over several strong baselines.
%R 10.18653/v1/P19-1500
%U https://aclanthology.org/P19-1500
%U https://doi.org/10.18653/v1/P19-1500
%P 5070-5081

Markdown (Informal)

[Hierarchical Transformers for Multi-Document Summarization](https://aclanthology.org/P19-1500) (Liu & Lapata, ACL 2019)

• Hierarchical Transformers for Multi-Document Summarization (Liu & Lapata, ACL 2019)

ACL

• Yang Liu and Mirella Lapata. 2019. Hierarchical Transformers for Multi-Document Summarization. In Proceedings of the 57th Annual Meeting of the Association for Computational Linguistics, pages 5070–5081, Florence, Italy. Association for Computational Linguistics.