Definition of entropy (good methodological tools, especially the third gain entropy calculation)

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Definition of entropy

https://www.cnblogs.com/wkang/p/10068475.html

Information entropy and information entropy gain

https://www.cnblogs.com/dengdan890730/p/6139605.html

Calculate the entropy gain

https://blog.csdn.net/it_beecoder/article/details/79554388

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Definition of entropy (good methodological tools, especially the third gain entropy calculation)

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