som1.py

orange源码 数据挖掘技术

# Description: Self Organizing Maps on iris data set
# Category:    modelling
# Uses:        iris
# Referenced:  orngSOM.htm
# Classes:     orngSOM.SOMLearner

import orngSOM
import orange
l=orngSOM.SOMLearner(xDim=5, yDim=10, parameters=[{"iterations":1000, "radius":5, "alpha":0.02},{"iterations":10000, "alpha":0.05}]) #radius in the second phase will be the same as in the first
c=l(orange.ExampleTable("iris.tab"))
for n in c.nodes:
    print "node:", n.x,n.y
    for e in n.examples:
	print "\t",e