The Crotal SRL System : a Generic Tool Based on Tree-structured CRF

Erwan Moreau (1) , Isabelle Tellier (2)

1 LIPN - Laboratoire d'Informatique de Paris-Nord
2 LIFO - Laboratoire d'Informatique Fondamentale d'Orléans

We present the Crotal system, used in the CoNLL09 Shared Task. It is based on XCRF, a highly configurable CRF library which can take into account hierarchical relations. This system had never been used in such a context thus the performance is average, but we are confident that there is room for progression.

Keywords: Conditional Random Fields; Semantic Role Labeling

Domains: Document and Text Processing

Erwan Moreau, Isabelle Tellier. The Crotal SRL System : a Generic Tool Based on Tree-structured CRF. Conference on Computational Natural Language Learning (CoNLL 2009): Shared Task, Jun 2009, Boulder, Colorado, United States. pp.91--96. ⟨hal-00448704⟩