?? disc4.py
字號(hào):
# Description: Shows how to find out which are the cut-off points introduced by Orange's automatic categorization rutines.
# Category: preprocessing
# Uses: iris
# Classes: EquiNDiscretization, EntropyDiscretization
# Referenced: o_categorization.htm
import orange
iris = orange.ExampleTable("iris")
equiN = orange.EquiNDiscretization(numberOfIntervals=4)
entropy = orange.EntropyDiscretization()
pl = equiN("petal length", iris)
sl = equiN("sepal length", iris)
sl_ent = entropy("sepal length", iris)
for attribute in [pl, sl, sl_ent]:
print "Cut-off points for", attribute.name, \
"are", attribute.getValueFrom.transformer.points
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