An Information-Theoretic Approach to Characterizing and Modelling Terminology Structure

本研究从定量和信息论的角度提出了词汇学结构分析的模型和框架，尤其是术语学结构分析。取得了以下成果：（1）对词汇学和术语学研究的可能条件进行了理论探讨;（2）澄清文本与词汇之间的理论关系，以复合词的范式单位为重点，应用二项内插和外插及其LNRE模型的扩展，建立词汇特征提取方法;（3）当数据数量增加而术语/词汇结构保持不变时，观察不同术语和要素的潜在数量。对于六个专业领域，我们也观察到了实际趋势。（4）对起源类型概念的批判性考察，涉及在什么条件下我们可以谈论日语的起源类型，并提出了一种评估起源类型区分在语言使用中的有用性或无用性的信息论衡量标准，从而建立了一种利用语篇语料库研究词汇学/术语学的方法。

This research proposed the model and framework for analyzing the structure of lexicology, especially terminology, from quantitative and information-theoretic point of view. The followings were achieved:(1)Theoretical investigations concerning the possible conditions under which the very study of lexicology and terminology can be pursued;(2)Clarifications of the theoretical relationships between texts and lexica, in order to establish a method of extracting lexicological characteristics, by focusing on the paradigmatic units of compounds and applying the binomial interpolation and extrapolation as well as its extension of LNRE models;(3)Observation of the potential quantity of different terms and elements, when the number of the data is increased while the structure of the terminology/lexicology is maintained. For six specialized domains, we also observed the actual tendencies.(4)Critical examination of the concept of types of origin, relating to under what conditions we can talk about the types of origin in Japanese and the proposal of an information-theoretic measure of evaluating the usefulness or uselessness of the distinction of types of origin in the language use.By these, we have established a way of approaching lexicology/terminology using textual corpora.