Is it possible to find out how many iterations it took eigs/eigsh to converge?
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I haven't played with eigs myself, but certainly the documentation and examples give no hint that the iterations value is available. This is in contrast to a number of other scipy functions like the root finders, so I assume (dangerous, I know) that it isn't easily available. – Jon Custer Sep 03 '14 at 18:02
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Thanks, Jon, I have the same feeling so far. Maybe it's the limitation of Arpack itself (I don't have any experience with that library). – Milan Hanus Sep 04 '14 at 12:15
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The newer optimize.minimize function return objects, which include the function evaluations. The devs seem to be updating things to object-oriented methods, so any refresh on eigs will likely also return an object. – Jon Custer Sep 04 '14 at 13:06