Le lexicoscope : un outil d’extraction des séquences phraséologiques basé sur des corpus arborés

This article discusses the features of the Lexicoscope, an architecture dedicated to treebank exploration. After reviewing some similar tools, we show how the use of complex expressions (corresponding to syntactic trees) in concordancing as well as extracting word sketches, can be very useful for the study of collocations and phraseology. We also provide a scenario for users, allowing them to explore in detail the contexts of target expressions, without having to learn the query language of the underlying formalism, through an original feature of example-based syntactic querying.