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2011 Oct 06
0
linear classifiers with sparse matrices
...matrices. I've tried using
both csr from SparseM and sparseMatrix from the Matrix library. You
can see a simple example recreating my results below.
Does anybody know if there's a trick to get this to work without
coercing the data into a dense matrix?
I'm currently playing with the KDDCUP 2010 datasets. I've written a
simple script to create hash kernel feature vectors for each of the
rows of training data. Right now I haven't added many features into
the hash vectors. For simplicity, I'm just creating a string token
for each feature, then hashing it and taking that h...