A Comprehensive Study of Inappropriate Hierarchy in WordNet

  • Liu Yang
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 4185)


In WordNet, the lexicalized noun/ verb concepts are organized hierarchically by means of hypernymy. As the most basic semantic relation, hypernymy not only serves to construct the specific hierarchy of the concepts in the domain, but also provides a common way of reasoning along the hierarchy for NLP researchers. However, we’ve found two kinds of inappropriate hierarchy in WordNet, the cases of ring and isolator for short. This paper offers a comprehensive study of these cases and make clear that they can cause a degenerate structure, hence harass the reasoning and eventually lead to errors.


Semantic Relation Relative Clause Taxonomic Tree Semantic Domain Degenerate Structure 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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Copyright information

© Springer-Verlag Berlin Heidelberg 2006

Authors and Affiliations

  • Liu Yang
    • 1
  1. 1.Institute of Computatinal LinguisticsPeking UniversityBejingChina

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