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dc.contributor.author Son, Chang-Sik -
dc.contributor.author Kim, Min Soo -
dc.contributor.author Seo, Suk Tae -
dc.contributor.author Cho, Yun Kyeong -
dc.contributor.author Kim, Yoon-Nyoun -
dc.date.accessioned 2021-07-20T20:04:53Z -
dc.date.available 2021-07-20T20:04:53Z -
dc.date.created 2020-11-05 -
dc.date.issued 2011-06 -
dc.identifier.citation 의공학회지, v.32, no.2, pp.134 - 143 -
dc.identifier.issn 1229-0807 -
dc.identifier.uri http://hdl.handle.net/20.500.11750/13877 -
dc.description.abstract The selection of meaningful clinical tests and its reference values from a high-dimensional clinical data with imbalanced class distribution, one class is represented by a large number of examples while the other is represented by only a few, is an important issue for differential diagnosis between similar diseases, but difficult. For this purpose, this study introduces methods based on the concepts of both discernibility matrix and function in rough set theory (RST) with two discretization approaches, equal width and frequency discretization. Here these discretization approaches are used to define the reference values for clinical tests, and the discernibility matrix and function are used to extract a subset of significant clinical tests from the translated nominal attribute values. To show its applicability in the differential diagnosis problem, we have applied it to extract the significant clinical tests and its reference values between normal (N = 351) and abnormal group (N = 101) with either cholecystitis or cholelithiasis disease.
In addition, we investigated not only the selected significant clinical tests and the variations of its reference values,but also the average predictive accuracies on four evaluation criteria, i.e., accuracy, sensitivity, specificity, and geometric mean, during 10-fold cross validation. From the experimental results, we confirmed that two discretization approaches based rough set approximation methods with relative frequency give better results than those with absolute frequency, in the evaluation criteria (i.e., average geometric mean). Thus it shows that the prediction model using relative frequency can be used effectively in classification and prediction problems of the clinical data with imbalanced class distribution.
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dc.language Korean -
dc.publisher 대한의용생체공학회 -
dc.title 데이터 이산화와 러프 근사화 기술에 기반한 중요 임상검사항목의 추출방법: 담낭 및 담석증 질환의 감별진단에의 응용 -
dc.title.alternative Extraction Method of Significant Clinical Tests Based on Data Discretization and Rough Set Approximation Techniques: Application to Differential Diagnosis of Cholecystitis and Cholelithiasis Diseases -
dc.type Article -
dc.type.local Article(Domestic) -
dc.type.rims ART -
dc.description.journalClass 2 -
dc.citation.publicationname 의공학회지 -
dc.identifier.kciid ART001559377 -
dc.contributor.nonIdAuthor Son, Chang-Sik -
dc.contributor.nonIdAuthor Kim, Min Soo -
dc.contributor.nonIdAuthor Seo, Suk Tae -
dc.contributor.nonIdAuthor Cho, Yun Kyeong -
dc.contributor.nonIdAuthor Kim, Yoon-Nyoun -
dc.identifier.citationVolume 32 -
dc.identifier.citationNumber 2 -
dc.identifier.citationStartPage 134 -
dc.identifier.citationEndPage 143 -
dc.identifier.citationTitle 의공학회지 -
dc.description.isOpenAccess N -
dc.subject.keywordPlus Data Discretization -
dc.subject.keywordPlus Rough Set -
dc.subject.keywordPlus Cholecystitis -
dc.subject.keywordPlus Cholelithiasis -
dc.subject.keywordPlus Differential Diagnosis -
dc.contributor.affiliatedAuthor Son, Chang-Sik -
dc.contributor.affiliatedAuthor Kim, Min Soo -
dc.contributor.affiliatedAuthor Seo, Suk Tae -
dc.contributor.affiliatedAuthor Cho, Yun Kyeong -
dc.contributor.affiliatedAuthor Kim, Yoon-Nyoun -
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