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# What are the steps of simhash algorithm in Python data mining?

2022-07-24 19:42:41【Alibaba cloud Q & A】

Python Data mining ,SimHash What are the steps of the algorithm ？

Take the answer 1：

simhash The algorithm is divided into 5 A step ：

1. participle ： Get an effective eigenvector , Each eigenvector is set 1-5 etc. 5 A level of weight .

2. Hash： Calculate the hash value ,hash The value is a binary number 01 Composed of n-bit Signature .

3. weighting ： Weight all the eigenvectors , namely W= Hash * weight .

4. Merge ： Add up the weighted results of the above eigenvectors , Become a sequence string .

5. Dimension reduction ： The above cumulative results , If it is greater than 0 Then put 1, Otherwise, set 0, So we can get the definition of the statement simhash value , In the end, we can use different sentences simhash Hamming distance to judge their similarity .

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