28 巻 (2013) 4 号 p. 370-378
This paper presents an information extraction method of political problems in minutes of local council which include councilor's utterances impartially. We focus on lexical heads of noun phrases in order to extract political problems. In this paper, the lexical heads are limited to noun. Our method is divided into two steps as follows: First step, our system classifies whether a phrase of lexical head includes political problems or not. Second step, our system find the beginning position of phrase which was classified as a lexical head of political problems. We confirmed that effectiveness of our method in the evaluation experiment.