Building domain specific lexical hierarchies from corpora
Olivier Ferret, Christian Fluhr, Françoise Rousseau-Hans, Jean-Luc Simoni · 2002
In this article, we present a new algorithm for building domain specific lexical hierarchies from texts.The basic elements of such a hierarchy are the normalized terms -mono and multi-word terms -extracted from a large corpus by a terminological extractor.The algorithm relies on collocations for representing the meaning of these terms, finding hierarchical relations between them and finally, organizing them into a hierarchy.Moreover, it takes into account the polysemy of terms while it builds the hierarchy.We also present the results of its application on a part of the corpus designed for the ARC A3 of the Francil network and we go through its possible applications.