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Temporal Expression Recognition Using Dependency Trees

TitleTemporal Expression Recognition Using Dependency Trees
Publication TypeBook Chapter
Year of Publication2014
AuthorsMazur P, Dale R
EditorVetulani Z, Mariani J
Book TitleHuman Language Technology Challenges for Computer Science and Linguistics
Series TitleLecture Notes in Computer Science
PublisherSpringer International Publishing
ISBN Number978-3-319-08957-7

In this paper we present a previously unexplored approach to recognizing the textual extent of temporal expressions. Based on the observation that temporal expressions are syntactic constituents, we use functional dependency relations between tokens in a sentence to determine which words in addition to a trigger word belong to the extent of the expression. This method is particularly attractive for the recognition of expressions with complex syntactic structure, for which state-of-the-art pattern-based taggers are not effective.