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Table 4 Some choices for obtaining w

From: Bi-linear matrix-variate analyses, integrative hypothesis tests, and case-control studies

Choice Description
(a) get w via FDA by Equation (11), as addressed in the previous subsection.
(b) estimate w by maximizing L by Equation (4), as to be addressed in the next subsection.
(c) get w as the normal direction of a separating hyperplane by one of machine learning approaches, e.g., support vector machine (SVM) (Cortes and Vapnik 1995; Suykens et al. 2002).