Discriminant/Discriminative Analysis
  • is a technique that is used by the researcher to analyze the research data when the criterion or the dependent variable is categorical and the predictor or the independent variable is interval in nature
  • it enables the researcher to examine whether significant differences exist among the groups, in terms of the predictor variables. It also evaluates the accuracy of the classification
  • Two-Group Discriminative Analysis - when dependent variable has exactly 2 categories
  • Multi-Group/Multiple Discriminative Analysis - when dependent variable has 3 or more categories

Discriminative Analysis - Types

NDA)

  • is both a classifier and a dimensionality reduction technique

Quadratic Discriminant Analysis (QDA)

  • is a variant of LDA that allows for non-linear separation of data
  • cannot be used for dimensionality reduction

Regularized Discriminant Analysis (RDA)

  • is a compromise between LDA and QDA

Generalized Discriminant Analysis (GDA)

  • TODO

Discriminative Analysis - Resources