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Long-Span Language Models for Query-Focused Unsupervised Extractive Text Summarization

  • Mittul Singh
  • Arunav Mishra
  • Youssef Oualil
  • Klaus Berberich
  • Dietrich Klakow
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 10772)

Abstract

Effective unsupervised query-focused extractive summarization systems use query-specific features along with short-range language models (LMs) in sentence ranking and selection summarization subtasks. We hypothesize that applying long-span n-gram-based and neural LMs that better capture larger context can help improve these subtasks. Hence, we outline the first attempt to apply long-span models to a query-focused summarization task in an unsupervised setting. We also propose the A cross S entence B oundary LSTM-based LMs, ASB LSTM and bi ASB LSTM, that is geared towards the query-focused summarization subtasks. Intrinsic and extrinsic experiments on a real word corpus with 100 Wikipedia event descriptions as queries show that using the long-span models applied in an integer linear programming (ILP) formulation of MMR criterion are the most effective against several state-of-the-art baseline methods from the literature.

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Copyright information

© Springer International Publishing AG, part of Springer Nature 2018

Authors and Affiliations

  1. 1.Spoken Language Systems (LSV)Saarland Informatics CampusSaarbrückenGermany
  2. 2.Max Planck Institute for InformaticsSaarland Informatics CampusSaarbrückenGermany

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