Title: Event Extraction for Italian Using a Cascade of Finite-State Grammars
Authors: ZAVARELLA VanniTANEV HristoPISKORSKI Jakub
Citation: Post-proceedings of the 7th International Workshop on Finite-State Methods and Natural Language Processing vol. 191 p. 158-171
Publisher: IOS Press
Publication Year: 2009
JRC N°: JRC48836
URI: http://www.iospress.nl/loadtop/load.php?isbn=9781586039752
http://publications.jrc.ec.europa.eu/repository/handle/JRC48836
Type: Contributions to Conferences
Abstract: This paper reports on our experience of adapting a real-world live event extraction system based on a cascade of finite-state extraction grammars to the processing of a new language, namely Italian. The real-time event extraction processing chain and the pattern specification language are briefly presented. The major part of the paper focuses on the creation of event extraction grammars and related resources for English and their adaptation for extracting events in Italian news articles. Some interesting phenomena which complicate the event extraction task for Italian are pinpointed and the results of the evaluation are presented. In particular, we compared two versions of the system for Italian, one based on surface-level patterns and a hybrid one, which integrates slightly more linguistically sophisticated patterns for covering a rich variety of morphological and syntactic constructions in Italian.
JRC Institute:Institute for the Protection and Security of the Citizen

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