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Extracting historical time periods from the Web

Extracting historical time periods from the Web,10.1002/asi.21378,Journal of The American Society for Information Science and Technology,Viktor de Boe

Extracting historical time periods from the Web  
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In this work we present an automatic method for the extraction of time periods related to ontological concepts from the Web. The method consists of two parts: an Information Extraction phase and a Semantic Representation phase. In the Information Extraction phase, temporal information about events that are associated with the target instance are extracted from Web documents. The resulting distribution is normalized and a model is fit to it. This distribution is then converted into a Semantic Representation in the second phase. We present the method and describe experiments where time periods for four different types of concepts are extracted and converted to a time representation vocabulary, based on the TIMEX2 annotation standard.
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