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TitleUse of Co-occurrences for temporal expressions annotation
Author(s)Craveiro, Olga
Macedo, Joaquim
Madeira, Henrique
KeywordsTemporal information Extraction
Portuguese language Processing
Information retrieval
Issue date2009
JournalLecture Notes in Computer Science
Abstract(s)The annotation or extraction of temporal information from text documents is becoming increasingly important in many natural language processing applications such as text summarization, information retrieval, question answering, etc.. This paper presents an original method for easy recognition of temporal expressions in text documents. The method creates semantically classified temporal patterns, using word co-occurrences obtained from training corpora and a pre-defined seed keywords set, derived from the used language temporal references. A participation on a Portuguese named entity evaluation contest showed promising effectiveness and efficiency results. This approach can be adapted to recognize other type of expressions or languages, within other contexts, by defining the suitable word sets and training corpora.
TypeConference paper
AccessOpen access
Appears in Collections:CAlg - Artigos em livros de atas/Papers in proceedings

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