Re:Stanford to host more online classes
by zeratul on Thursday November 17, 2011 @02:29PM
(#3248885)
Karpathy: Do you know if prof. Ng will cover the issue of sparse data in his lectures?
When the number of dimensions is much greater than the number of samples and most of your cells in a matrix are equal to zero then most of the ML algorithms don't behave too well. It's very common problem in NLP to have sparse matrices.
When the number of dimensions is much greater than the number of samples and most of your cells in a matrix are equal to zero then most of the ML algorithms don't behave too well. It's very common problem in NLP to have sparse matrices.