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添加工具类信息增益的计算
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@@ -120,5 +120,5 @@ if __name__ == '__main__':
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infoGain1 = getFeatureShannonEnt(dataSet1, labels)
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infoGain2 = getFeatureShannonEnt(dataSet2, labels)
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infoGain3 = getFeatureShannonEnt(dataSet3, labels)
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print '香农熵: \n\t%s, \n\t%s, \n\t%s' % (infoGain1, infoGain2, infoGain3)
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print '信息增益: \n\t%s, \n\t%s, \n\t%s' % (infoGain1, infoGain2, infoGain3)
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