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Python write flight chess

Application backgroundIn the preparation of the program, the use of python2.6 softwareUsing Python language to write a flight chess game, do not load pygame,Only using pictures and common interface form, to understand the basic use of Python and grammar has a great help...

Classical dimension reduction algorithm -- principal component analysis algorithm (PCA) Python implementation

Application backgroundPCA algorithm is mainly used to reduce the dimension, the data from high dimension to low dimension, simplify the expression of data. The specific algorithm steps are as follows:1, the sample matrix of the center of the sample matrix (matrix X each line is a sample)2, seeking c...


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