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Decision anaysis

Zhong-Bao Liu, Zhao-Ba Wang, Wen-Juan Zhao
Although Support Vector Machine (SVM) is widely used in astronomy, it only takes the margin between classes into consideration while neglects the data distribution in each class, which seriously limits the classification efficiency. In view of this, a novel automatic classification method of star spectra data based on manifold-based discriminant analysis (MDA) and SVM is proposed in this paper. Two important concepts in MDA, manifold-based within-class scatter (MWCS) and manifold-based between-class scatter (MBCS), are introduced in the proposed method, the separating hyperplane found by which ensures MWCS is minimized and MBCS is maximized...
January 2014: Guang Pu Xue Yu Guang Pu Fen Xi, Guang Pu
James A Grant, Jon Dowell
BACKGROUND: Intermediate care, which is provided by community hospitals, is increasingly seen as one way of reducing pressure on secondary care. However, despite evidence of wide variation, there is little literature describing how general practitioners (GPs) use these hospitals. Because of the control they have over decisions to admit, development of these units depends on the cooperation of GPs. AIM: To identify and understand the factors influencing the decision to admit to a community hospital...
August 2002: British Journal of General Practice: the Journal of the Royal College of General Practitioners
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