Collection of Moods in Japanese Web Pages, and a Proposal of an Expanded Mood System

Abstract

Some systems of moods of Japanese sentences are presented.However, it is notdefinitely shown what kind of method those known mood systems are constitutedwith.In addition, it does not seem that they are constituted through analyzing sentences included in various Japanese web pages.Therefore, in linguistic informationprocessing for Japanese web pages, it is very likely that those known mood systemsare insufficient at a point of exhaustiveness of moods.In this article, we describes a ystematic method, in detail, with which we analyze sentences included in 11, 034, 409Japanese web pages collected by NTCIR project and we collect new moods withknown moods.A basic procedure of the method is as follows: (1) Divide a Japanese sentence into words with ChaSen; (2) Focus on a sentence-end-word that probably hasvarious kinds of moods; (3) Assign a proper mood to the sentence-end-word manually. We show the collected new moods, and compare the collected moods and the other known moods in order to clarify what moods can not be collected and what moodshave been already presented among the collected new moods. Based on findings from the comparison, we propose an expanded mood system such that more exhaustivenessof moods is provided.