Estimating document focus time

Authors:
Adam Jatowt;Ching-Man Au Yeung;Katsumi Tanaka
Affiliations:
Kyoto University, Kyoto, Japan;Noah's Ark Lab, Huawei, Hong Kong, Hong Kong;Kyoto University, Kyoto, Japan
Venue:
Proceedings of the 22nd ACM international conference on Conference on information & knowledge management
Year:
2013

Citing 10
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Abstract

Temporality is an important characteristic of text documents. While some documents are clearly atemporal, many have temporal character and can be mapped to certain time periods. In this paper, we introduce the problem of estimating focus time of documents. Document focus time is defined as the time to which the content of a document refers to and is considered as a complementary dimension to its creation time or timestamp. We propose several estimators of focus time by utilizing external knowledge bases such as news article collections which contain explicit temporal references. We then evaluate the effectiveness of our methods on diverse datasets of documents about historical events in five countries.