perClass Documentation
version 5.4 (7-Dec-2018)
 SDEXPAND  Expand feature space using polynomials

    P=SDEXPAND(DATA)
    P=SDEXPAND(DATA,DEGREE)

 INPUT
   DATA    a data set
   DEGREE  max polynomial degree used in the expansion (def: 2)

 OUTPUT
   P       expansion projection

 DESCRIPTION
 SDEXPAND adds dimensions using polynomial feature expansion. This allows
 us to solve non-linear problems with linear classifiers.