Initial commit
Multinomial regression  - Initial commit
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Multinomial regression - initial commit
Delete
Initial commit
Cleaning,optimizing
Cleaning, optimizing
Validation error check added
added softplus
Cleaning, added command line parser in ex2
Cleaning,revising
cleaning, added README
revised gradient check
removed readme~
added readme to ex2, revised readme to ex1, cleaining
added readme
revision
added pictures
revising