Characteristics of In-text Causal Relations
Takashi Inui, Manabu Okumura · IPSJ SIG Notes · 2005
In this paper, we report the results of our investigation of the characteristics of in-text causal relations. First, we designed causal relation tags. With our designed tag set, annotators annotated a set of Japanese text documents. Then, using the annotated corpus, we investigated the causal relation instances from three viewpoints: (i) cue phrase markers, (ii) part-of-speech information, and (iii) position in sentences. Our quantitative study shows that what amount of causal relation instances are present, where these relation instances are present, and which types of linguistic expressions are used for expressing these relation instances in text.