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Development of medical portal system based on the thesaurus andcollocation analysis of biomedical terms
Kaneko Shuji1) Ugawa Yoshihiro2) Ohtake Hiroshi3) Kawamoto Takeshi4)
Takeuchi Hiroaki5) Takekoshi Masataka6) Amano Hiroo1)
Fujita Nobuyuki7)
Kyoto Univ. Grad. Sch. Pharm. Sci.1) Miyagi Univ. Edu.2) Kyoto Pref. Univ. Med.3)
Hiroshima Univ. Grad. Sch. Biomed. Sci.4) Shizuoka Univ. Fac. Sci.5) Tokai Univ. Sch. Med.6)
NITE7)The internet has become a commonly used and popular form of media by which health care information can be searched
and retrieved not only by general populace but also by medical students and professionals. Accordingly, an increase in thenumber of Japanese documents easily available through the Internet has caused the relative avoidance of original scientificpapers and databases written in English. To develop a translational portal site that enables the use of Japanese for medical
infomation retrieval, we have constructed an English-Japanese thesaurus containing 160,000 terms collected frombiomedical literatures. We have assigned individual terms to the MeSH descriptors (25,000 English-Japanese pairs), andanalyzed the top-30 collocations of the terms in medical literature (total 1.4 million pairs). The collocation data are available
for associative search, equipped with a tree-style thesaurus in the online Life Science Dictionary (LSD). The free LSD portalsite enables the use of Japanese terms for information searches linked to Entrez-PubMed and Google sites. In addition, we
have developed a new dictionary for Mac OS X 10.5 that can be used in the Safari browser as a one-touch dictionary. The
development of new portal systems and dictionaries will be useful in medical education and research activities.

Keywords: Thesaurus Tree, Synonyms, Dictionary, Associative Search  !
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