PPtreeViz (version 1.0.3)

PDAopt: PP optimization using PDA index

Description

Find the q-dim optimal projection using PDA projectin pursuit index

Usage

PDAopt(origclass,origdata,q=1,weight=TRUE,lambda=0.1, ...)

Arguments

origclass

class information vector

origdata

data matrix without class information

q

dimension of projection matrix

weight

weight flag using in PDA index

lambda

lambda in PDA index

...

arguments to be passed to methods

Value

• indexbest maximum PDA index value projbest optimal q-dim projection matrix origclass original class information vector origdata original data matrix without class information

References

Lee, EK., Cook, D.(2010) A projection pursuit index for large p small n data, Statistics and Computing, 20:381-392.

Examples

data(iris)
PDA.proj.result <- PDAopt(iris[,5],iris[,1:4],weight=TRUE,q=2,lambda=0.1)
PDA.proj.result$indexbest
PDA.proj.result$projbest