Automatic acquisition of script knowledge from a text collection

Authors:
Toshiaki Fujiki;Hidetsugu Nanba;Manabu Okumura
Affiliations:
Tokyo Institute of Technology, Midori-ku, Yokohama, Japan;Hiroshima City University, Asaminami-ku, Hiroshima, Japan;Tokyo Institute of Technology, Midori-ku, Yokohama, Japan
Venue:
EACL '03 Proceedings of the tenth conference on European chapter of the Association for Computational Linguistics - Volume 2
Year:
2003

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Abstract

In this paper, we describe a method for automatic acquisition of script knowledge from a Japanese text collection. Script knowledge represents a typical sequence of actions that occur in a particular situation. We extracted sequences (pairs) of actions occurring in time order from a Japanese text collection and then chose those that were typical of certain situations by ranking these sequences (pairs) in terms of the frequency of their occurrence. To extract sequences of actions occurring in time order, we constructed a text collection in which texts describing facts relating to a similar situation were clustered together and arranged in time order.We also describe a preliminary experiment with our acquisition system and discuss the results.