Paper: ManTIME: Temporal expression identification and normalization in the TempEval-3 challenge

ACL ID S13-2009
Title ManTIME: Temporal expression identification and normalization in the TempEval-3 challenge
Venue Joint Conference on Lexical and Computational Semantics
Session
Year 2013
Authors

This paper describes a temporal expression identification and normalization system, Man- TIME, developed for the TempEval-3 chal- lenge. The identification phase combines the use of conditional random fields along with a post-processing identification pipeline, whereas the normalization phase is carried out using NorMA, an open-source rule-based tem- poral normalizer. We investigate the perfor- mance variation with respect to different fea- ture types. Specifically, we show that the use of WordNet-based features in the identifica- tion task negatively affects the overall perfor- mance, and that there is no statistically sig- nificant difference in using gazetteers, shal- low parsing and propositional noun phrases labels on top of the morphological features. On the test data, the best run a...