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Edited "Again I am Asking About Random sampling."

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Rehan Ali
Rehan Ali 2015-11-13
关闭： Walter Roberson 2015-11-14
Dear Walter,
I have a matrix A, size ( 494020 x 41) samples , this matrix contain randomly distributed samples of four class , like DOS, Prob, U2R, R2L, further these classes have sub class and these subclasses samples distributed in Matrix A, I need only Dos class related samples, the Dos class have sub class is (Back, land ,Neptune ,pod, smurf, teardrop) Basically these are labels related to the samples that I want like, I need 40 sample of Back. I need 50 sample of land. Need 100 sample of Neptune. Need 100 sample of teardrop. Need 500 samples of smurf. Need 100 samples of Pod. How I can get these sample randomly, I need 391458 samples of all subclass.

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