Title: Size matters: tight and loose context definitions in English word space models
Authors: Peirsman, Yves
Heylen, Kris
Geeraerts, Dirk
Issue Date: Aug-2008
Publisher: Springer
Host Document: Proceedings of the ESSLLI Workshop on Distributional Lexical Semantics pages:34-41
Conference: European Summer School in Logic, Language and Information (ESSLLI) edition:20 location:Hamburg, Germany date:4-15 August 2008
Abstract: Word Space Models use distributional similarity between two words as a measure of their semantic similarity or relatedness. This distributional similarity, however, is influenced by the type of context the models take into
account. Context definitions range on a continuum from tight to loose, depending on the size of the context window around the target or the order of the context words that are considered. This paper investigates whether two general
ways of loosening the context definition — by extending the context size from one to ten words, and by taking into account second-order context words — produce equivalent results. In particular, we will evaluate the performance
of the models in terms of their ability (1) to discover semantic word classes and (2) to mirror human associations.
ISBN: 9783642147289
VABB publication type: VABB-5
Publication status: published
KU Leuven publication type: IC
Appears in Collections:Quantitative Lexicology and Variational Linguistics (QLVL), Leuven

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