What tools are the best for sparse data?

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Jin Gu

R is very memory-cosuming. Please try weka package in Java or Matlab. Better use C++ package if the algorithm is available, such as LibSVM.

Raphaël Feraud

You can try this one: www.khiops.com

It can process very large data set and specially a large number of columns. I have used it on tens of thousands of columns.

Fahime Ghasemian

I think Weka is a good idea.

Thabet Slimani

Weka is a good tool for sparse data.