| Budget Amount *help |
¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000)
Fiscal Year 2014: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2013: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2012: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
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| Outline of Final Research Achievements |
A procedure for analyzing ordered categorical variables is developed based on a relationship between Multiple Correspondence Analysis (MCA) and Principal Components Analysis (PCA), which has not been found so far. By metric scaling of categories using orthogonal polynomials, and Harris-Kaiser type rotation, MCA is transformed into PCA without changing the size of explained variances and quantified scores given to individual up to orthogonal transformations. The metamorphosed PCA can be used to evaluate the appropriateness of Likert-type scoring as simple sums of category numbers, and the interpretability of nonlinear components which are usually considered to be spurious dimensions. Rotation attaining the simple structure makes it possible to treat far more numbers of dimensions than MCA by separating contents of dimensions each other.
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