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Demension reduction for high-dimensional data via mixtures of common factor analyzers-an application to tumor classification
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  • Demension reduction for high-dimensional data via mixtures of common factor analyzers-an application to tumor classification
  • Demension reduction for high-dimensional data via mixtures of common factor analyzers-an application to tumor classification
저자명
Baek. Jang-Sun
간행물명
한국데이터정보과학회지
권/호정보
2008년|19권 3호|pp.751-759 (9 pages)
발행정보
한국데이터정보과학회
파일정보
정기간행물|ENG|
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이 논문은 한국과학기술정보연구원과 논문 연계를 통해 무료로 제공되는 원문입니다.
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기타언어초록

Mixtures of factor analyzers(MFA) is useful to model the distribution of high-dimensional data on much lower dimensional space where the number of observations is very large relative to their dimension. Mixtures of common factor analyzers(MCFA) can reduce further the number of parameters in the specification of the component covariance matrices as the number of classes is not small. Moreover, the factor scores of MCFA can be displayed in low-dimensional space to distinguish the groups. We propose the factor scores of MCFA as new low-dimensional features for classification of high-dimensional data. Compared with the conventional dimension reduction methods such as principal component analysis(PCA) and canonical covariates(CV), the proposed factor score was shown to have higher correct classification rates for three real data sets when it was used in parametric and nonparametric classifiers.