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Embedding a Semanti...
Embedding a Semantic Network in a Word Space
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- Johansson, Richard, 1975 (författare)
- Gothenburg University,Göteborgs universitet,Institutionen för svenska språket,Department of Swedish
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- Nieto Piña, Luis, 1988 (författare)
- Gothenburg University,Göteborgs universitet,Institutionen för svenska språket,Department of Swedish
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(creator_code:org_t)
- 2015
- 2015
- Engelska.
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Ingår i: Proceedings of the 2015 Conference of the North American Chapter of the Association for Computational Linguistics: Human Language Technologies. Denver, United States, May 31 – June 5, 2015. - 9781941643495 ; , s. 1428-1433
- Relaterad länk:
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https://gup.ub.gu.se...
Abstract
Ämnesord
Stäng
- We present a framework for using continuous- space vector representations of word meaning to derive new vectors representing the meaning of senses listed in a semantic network. It is a post-processing approach that can be applied to several types of word vector representations. It uses two ideas: first, that vectors for polysemous words can be decomposed into a convex combination of sense vectors; secondly, that the vector for a sense is kept similar to those of its neighbors in the network.This leads to a constrained optimization problem, and we present an approximation for the case when the distance function is the squared Euclidean. We applied this algorithm on a Swedish semantic network, and we evaluate the quality of the resulting sense representations extrinsically by showing that they give large improvements when used in a classifier that creates lexical units for FrameNet frames.
Ämnesord
- NATURVETENSKAP -- Data- och informationsvetenskap -- Språkteknologi (hsv//swe)
- NATURAL SCIENCES -- Computer and Information Sciences -- Language Technology (hsv//eng)
Nyckelord
- språkteknologi
- lexikal semantik
- ordbetydelser
- korpusar
- distributionella metoder
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