Probably better to save it. Probably also depends on the problem set. If A has fewer non-zero elements, then recomputing y may be faster than retrieving a saved copy. Even if y and A have the same number of of non-zero elements, then recomputing y might be faster because you save the writing cost.
But I really don't know which way this should go in the end. On Mon, Sep 28, 2009 at 11:49 PM, Jake Mannix <[email protected]> wrote: > This is true, but is recomputing Y on the second pass worth not saving it? -- Ted Dunning, CTO DeepDyve
