Cabaleiro, Bernardo, Peñas, Anselmo and Manandhar, Suresh Kumar orcid.org/0000-0002-2822-2903 (2017) Grounding proposition stores for question answering over linked data. Knowledge Based Systems. pp. 34-42.
Abstract
Grounding natural language utterances into semantic representations is crucial for tasks such as question answering and knowledge base population. However, the importance of the lexicons that are central to this mapping remains unmeasured because question answering systems are evaluated as end-to-end systems. This article proposes a methodology to enable a standalone evaluation of grounding natural language propositions into semantic relations by fixing all the components of a question answering system other than the lexicon itself. Thus, we can explore different configurations trying to conclude which are the ones that contribute better to improve overall system performance. Our experiments show that grounding accounts with close to 80% of the system performance without training, whereas training supposes a relative improvement of 7.6%. Finally we show how lexical expansion using external linguistic resources can consistently improve the results from 0.8% up to 2.5%.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2017 Elsevier B.V. This is an author-produced version of the published paper. Uploaded in accordance with the publisher’s self-archiving policy. |
Keywords: | Question answering, Semantic parsing, Linked data, Grounding |
Dates: |
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Institution: | The University of York |
Academic Units: | The University of York > Faculty of Sciences (York) > Computer Science (York) |
Depositing User: | Pure (York) |
Date Deposited: | 27 Mar 2019 16:00 |
Last Modified: | 22 Feb 2025 00:05 |
Published Version: | https://doi.org/10.1016/j.knosys.2017.04.016 |
Status: | Published |
Refereed: | Yes |
Identification Number: | 10.1016/j.knosys.2017.04.016 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:144196 |
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Filename: cabaleiro_et_al_2017.pdf
Description: Grounding Proposition Stores for Question Answering over Linked Data
Licence: CC-BY-NC-ND 2.5