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International Semantic Web Conference

ISWC 2019: The Semantic Web – ISWC 2019 pp 164–181Cite as

Mapping Factoid Adjective Constraints to Existential Restrictions over Knowledge Bases

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Part of the book series: Lecture Notes in Computer Science ((LNISA,volume 11778))

Abstract

The rapid progress of question answering (QA) systems over knowledge bases (KBs) enables end users to acquire knowledge with natural language questions. While mapping proper nouns and relational phrases to semantic constructs in KBs has been extensively studied, little attention has been devoted to adjectives, most of which play the role of factoid constraints on the modified nouns. In this paper, we study the problem of finding appropriate representations for adjectives over KBs. We propose a novel approach, called Adj2ER, to automatically map an adjective to several existential restrictions or their negation forms. Specifically, we leverage statistic measures for generating candidate existential restrictions and supervised learning for filtering the candidates, which largely reduce the search space and overcome the lexical gap. We create two question sets with adjectives from QALD and Yahoo! Answers, and conduct experiments over DBpedia. Our experimental results show that Adj2ER can generate high-quality mappings for most adjectives and significantly outperform several alternative approaches. Furthermore, current QA systems can gain a promising improvement when integrating our adjective mapping approach.

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Notes

  1. 1.

    We used the S size PPDB downloaded from http://paraphrase.org/#/download.

  2. 2.

    https://webscope.sandbox.yahoo.com/.

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Acknowledgments

This work was supported by the National Key R&D Program of China (No. 2018YFB1004300), the National Natural Science Foundation of China (No. 61772264), and the Collaborative Innovation Center of Novel Software Technology and Industrialization. We would like to thank Xinqi Qian, Yuan Wang and Xin Yu for their helps in preparing evaluation.

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Authors and Affiliations

  1. State Key Laboratory for Novel Software Technology, Nanjing University, Nanjing, China

    Jiwei Ding, Wei Hu, Qixin Xu & Yuzhong Qu

Authors
  1. Jiwei Ding
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  2. Wei Hu
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  3. Qixin Xu
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  4. Yuzhong Qu
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Corresponding authors

Correspondence to Wei Hu or Yuzhong Qu .

Editor information

Editors and Affiliations

  1. Fondazione Bruno Kessler, Trento, Italy

    Chiara Ghidini

  2. Linköping University, Linköping, Sweden

    Olaf Hartig

  3. University of Bonn, Bonn, Germany

    Maria Maleshkova

  4. University of Economics Prague, Prague, Czech Republic

    Vojtěch Svátek

  5. University of Illinois at Chicago, Chicago, IL, USA

    Isabel Cruz

  6. University of Chile, Santiago, Chile

    Aidan Hogan

  7. Memect Technology, Beijing, China

    Jie Song

  8. Mines Saint-Etienne, Saint-Etienne, France

    Maxime Lefrançois

  9. Inria Sophia Antipolis - Méditerranée, Sophia Antipolis, France

    Fabien Gandon

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Ding, J., Hu, W., Xu, Q., Qu, Y. (2019). Mapping Factoid Adjective Constraints to Existential Restrictions over Knowledge Bases. In: Ghidini, C., et al. The Semantic Web – ISWC 2019. ISWC 2019. Lecture Notes in Computer Science(), vol 11778. Springer, Cham. https://doi.org/10.1007/978-3-030-30793-6_10

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  • DOI: https://doi.org/10.1007/978-3-030-30793-6_10

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  • Publisher Name: Springer, Cham

  • Print ISBN: 978-3-030-30792-9

  • Online ISBN: 978-3-030-30793-6

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