Participants : Bruno Guillaume [correspondant] , Guy Perrier.
Graph rewriting, Interface syntaxe-sémantique
Grew is a Graph Rewriting tools dedicated to applications in NLP. It is freely-available (from the page http://grew.loria.fr ) and it is developed using the InriaGforge platform (http://gforge.inria.fr/projects/semagramme/ )
We list below some of the major specificities of the GREW software.
Grew can be used on Corpus mode with statistics about rules usage or with an a Graphical User Interface which can show all intermediate graphs used during the rewriting process (useful either to debug rewriting system or for demonstrations).
A demonstration of the Grew Software was presented at the TALN conference in june in Grenoble.
The Grew software were used for several kind of applications manipulating syntactic and/or semantic graph representations. It was used to build DMRS semantic representation from syntactic dependency trees in the French TreeBank  ,  . More recently, it was used on the Sequoia TreeBank, to produce deep syntax annotation and DMRS Semantic representations.
Another application of the Grew software which is currently investigated is the detection of annotation errors in corpora. Graph Rewriting is use to detect ill-formed structures that don't fit the annotation guide requirements. In collaboration with the Alpage team, this was applied to the Sequoia Corpus and the reported errors were corrected in version 3.2 and 3.3 of the corpus(https://www.rocq.inria.fr/alpage-wiki/tiki-index.php?page=CorpusSequoia ).