Attribute weighting method based on information gain ratios and text classification methods
A technology of information gain rate and text classification, which is applied in the field of artificial intelligence data mining and classification, and can solve problems such as high time complexity and inapplicability
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[0056] The present invention will be further described below in conjunction with embodiment.
[0057] The present invention provides an attribute weighting method based on information gain rate, comprising the following steps:
[0058] (1) For a known training document set D, any document d in the training document set D is represented as a word vector form d=1 ,w 2 ,...w m >, where w i is the i-th word in document d, and m is the number of words in document d;
[0059] Use the following formula to calculate the information gain rate of each attribute in the training document set D:
[0060] GainRatio ( D , w i ) = Gain ( D , w i ) S...
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