Patrick Watrin

Networking Multiword Units

This paper details a network infrastructure for representing and sharing multiword units. It enables connecting local networks describing linguistic semi-fixed components in the form of local grammars.

CENTAL at SemEval-2016 Task 12: a linguistically fed CRF model for medical and temporal information extraction

In this paper, we describe the system developed for our participation in the Clinical TempEval task of SemEval 2016 (task 12). Our team focused on the subtasks of span and attribute identification from raw text and proposed a system that integrates both statistical and linguistic approaches. Our system is based on Conditional Random Fields with high-precision linguistic features.

Accounting for Contiguous Multiword Expressions in Shallow Parsing

Abstract In this paper, we focus on chunking including contiguous multiword expression recognition, namely super-chunking. In particular, we present different strategies to improve a superchunker based on Conditional Random Fields by combining it with a finite-state symbolic super-chunker driven by lexical and grammatical resources. We display a substantial gain of 7.6 points in terms of overall accuracy.