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Portuguese Temporal Expressions Recognition: from TE Characterization to an Effective TER Module Implementation

Caroline HagègeJorge BaptistaNuno Mamede

Taking into account the temporal dimension conveyed in texts is a challenge to natural language processing. At the same time this task is of great importance for a wide range of natural language processing applications. The goal of this paper is twofold. First a characterization of Portuguese temporal expressions as they appear in texts is presented. This classification is intended to meet the requirements of high inter-agreement between annotators of temporal expressions. Second, relying on this characterization, an effective temporal expression annotation tool is described. Results from its evaluation are reported.

http://www.lbd.dcc.ufmg.br/colecoes/stil/2009/005.pdf

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