FEATSEL Fixed mapping for selecting given features
[W,V] = FEATSEL(K,J)
DescriptionThis is a simple support routine that writes feature selection in terms of a mapping. If A is a Kdimensional dataset and J are the feature indices to be selected, then B = A*W does the same as B = A(:,J). The use of this routine is a mapping V computed for a lower dimensional subspace defined by J can now be defined by W = FEATSEL(K,J)*V as a mapping in the original Kdimensional space. The selected features can be retrieved by W.DATA or by +W. See below for various methods to perform feature selection. See alsomappings, datasets, feateval, featself, featsellr, featselo, featselb, featseli, featselp, featselm,
