i noticed irregularities in the results of Colt version when compared to other solvers as well at the time i looked at it. Something doesn't add up there.
On Wed, Apr 25, 2012 at 9:11 PM, Ted Dunning <[email protected]> wrote: > OK. > > I have a first pass at converting the colt eigen solver to our math > package. It wasn't hard with the help of a few emacs macros, but in the > process I found what really look like some bugs. That throws the utility > of the conversion into question. At the same time I wrote a from-scratch > version that is based on using SVD (only works on symmetric matrices). I > also started in on an idiomatic version of the Colt decomposer that users > our vectorized operations. > > Next would be to build some test cases and figure out what is happening. I > may have to fall back to the JAMA or commons math libraries for inspiration > if the Colt versions turn out flawed. > > Overall, this isn't any worse than I expected. > > On Wed, Apr 25, 2012 at 2:12 PM, Dmitriy Lyubimov <[email protected]> wrote: > >> if reliable eigensolver is available, we can also get rid of >> dependency on eigensolver from apache math in SSVD. Don't quite know >> if that's the only dependency on apache math, i saw one somewhere else >> as well. >> >> On Wed, Apr 25, 2012 at 8:09 AM, Ted Dunning <[email protected]> >> wrote: >> > I would like to take a stab at a collections/math merge and a deletion >> if deprecated math stuff. The deletion will require me to write and eigen >> solver to support some of Jake's old code. >> > >> > Sent from my iPhone >> > >> > On Apr 25, 2012, at 9:52 AM, Jeff Eastman <[email protected]> >> wrote: >> > >> >> Currently there are 24 outstanding JIRAs targeted for 0.7, which is >> intended to be a clean-up and housekeeping release. They are about evenly >> split between high and low priority tasks. Seven are marked asPatch >> Available. Now might be a good time to take a look at them to triage the >> list and begin to wrap up the remaining issues. >> >> >> >> Jeff >> >> >> >> PS: I've completed my move to Erie PA and should have quite a bit more >> time to devote to Mahout >>
