classifierbyexampletable.py

orange源码 数据挖掘技术

# Description: Shows how to construct an orange.ClassifierFromExampleTable
# Category:    classification, lookup classifiers, constructive induction, feature construction
# Classes:     ClassifierByExampleTable, LookupLearner
# Uses:        monk1
# Referenced:  lookup.htm

import orange

data = orange.ExampleTable("monk1")
a, b, e = data.domain["a"], data.domain["b"], data.domain["e"]

data_s = data.select([a, b, e, data.domain.classVar])
abe = orange.LookupLearner(data_s)

print len(data_s)
print len(abe.sortedExamples)

for i in abe.sortedExamples[:10]:
    print i
print

for i in abe.sortedExamples[:10]:
    print i, i.getclass().svalue
print

y2 = orange.EnumVariable("y2", values = ["0", "1"])
abe2 = orange.LookupLearner(y2, [a, b, e], data)
for i in abe2.sortedExamples[:10]:
    print i, i.getclass().svalue
print

y2 = orange.EnumVariable("y2", values = ["0", "1"])
abe2 = orange.LookupLearner(y2, [a, b], data)
for i in abe2.sortedExamples:
    print i, i.getclass().svalue