Bidirectionnal converter between syntactic annotations : from French Treebank Dependencies to PASSAGE annotations, and back.

We present the first version of a bidirectional converter between the PASSAGE annotations and the French Tree-bank Dependency (FTBDEP) annotations. FTB-DEP is the syntactic representation of several freely available parsers and the PASSAGE annotation was used to hand-annotate a relatively large sized corpus, that served as gold-standard in the PASSAGE evaluation campaigns. Our converter will give the means to evaluate these parsers on the PASSAGE corpus. We shall illustrate the mapping of important syntactic phenomena using the corpus made of the examples of the FTB-DEP annotation guidelines, which we have hand-annotated with PASSAGE annotations and employed to compute quantitative performance measures on the FTB-DEP guidelines. The examples we have selected here for illustrating the back converter from ftb-dep to PASSAGE concern passive voice constructions.