Joho Chishiki Gakkaishi
Online ISSN : 1881-7661
Print ISSN : 0917-1436
ISSN-L : 0917-1436
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Volume 19, Issue 4
Displaying 1-3 of 3 articles from this issue
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Special Issue: The 14th Information and Knowledge Forum "Developments of Languege Resouces: Terminology, Ontology, Thesaurus"
  • Domain Ontology Developments and their Utilization
    Kouji KOZAKI
    2009 Volume 19 Issue 4 Pages 296-305
    Published: October 28, 2009
    Released on J-STAGE: April 04, 2010
    DOIhttps://doi.org/10.2964/jsik.19_296
    JOURNAL FREE ACCESS
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    Recently, ontology attracts attention as a fundamental technology for knowledge system, and many ontologies have been developed in various domains such as bioinformatics, medicine, engineering and so on. The authors also are involved with ontology developments in several domains. This article discusses some way of thinking to develop well organized ontology thorough the experiences of ontology developments.
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  • Composite Term Extraction from Japanese Texts
    Teruo KOYAMA
    2010 Volume 19 Issue 4 Pages 306-315
    Published: February 15, 2010
    Released on J-STAGE: April 04, 2010
    DOIhttps://doi.org/10.2964/jsik.19_306
    JOURNAL FREE ACCESS
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    Terms are used to describe important research concepts in academic documents, and are important to utilize the information in various research fields. In this paper, the author discuss about a method for extracting terms from academic texts based on natural language processing technique. Most of Japanese terms take composite word form, yet simple methods to extract composite terms based on current Japanese morpheme classification cannot attain enough precision. Considering internal structure of composite term candidates and the backward/ forward connective relations of the candidates in the texts, most of composite terms can be extracted with high precision. The author also discuss about the systematization of term candidates based on the nesting relations and the relationships of the candidates to various research sub-domains.
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  • A Thesaurus for Natural Language Processing of Japanese
    Yoshihiro KOKUBU, Hiroyuki OKANO
    2010 Volume 19 Issue 4 Pages 316-327
    Published: February 15, 2010
    Released on J-STAGE: April 04, 2010
    DOIhttps://doi.org/10.2964/jsik.19_316
    JOURNAL FREE ACCESS
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    We developed a thesaurus of 440,000 terms for the purpose of natural language processing such as parsing or the term standardization. Because each entry term has a large number of terms with various semantic relations, we introduce a facet and classify them for finding relative terms easily. Furthermore, we distinguish discriminatory terms, and fluctuating Japanese spellings. Our package has the connecting function with the Internet and the other dictionaries. We described points to keep in mind and future tasks in making a thesaurus.
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