Numpy.dot TypeError: Cannot cast array data from dtype('float64') to dtype('S32') according to the rule 'safe'

Question

Why am I getting this error when using np.dot(a,b.T):

TypeError: Cannot cast array data from dtype(\'float64\') 
               to dtype(\'S32\'         


        

Answer 1

Try converting whole numpy array into float Example:

train = train.astype(float)
train_target = train_target.astype(float)