Hi DB, 1. Could you point to the BFGS repositories used to publish artifacts to maven central ? What's the best way to add changes to it ? I fork the repo at my github ? Basically as I mentioned before I need to add lbfgs-b, orthant wise for L1 handling and few variants of line search to lbfgs...
2. For the spark pull request, what's the best way to get your branch dbtsai-lbfgs ? On my github spark mirror I can make a branch called debasish-lbfgs and merge your code to it ? I need sparse support to the logistic regression classifier using lbfgs solve and therefore I will need Xiangrui's branch as well... https://github.com/apache/incubator-spark/pull/575 Thanks. Deb On Sun, Mar 2, 2014 at 12:14 AM, DB Tsai <dbt...@alpinenow.com> wrote: > Hi Deb, > > The PR is here > https://github.com/apache/spark/pull/53 > > Hi Evan, > > I think we need to refactor the optimization methods and also the way > we write algorithms. For example, if I want to use the new > optimization method in LogisticRegression.scala, I need to implement > LogisticRegressionWithLBFGS class and object which are mostly > identical to LogisticRegressionWithSGD. I'll open a JIRA for this. > > I just submit the LBFGS PR https://github.com/apache/spark/pull/53 , > and it depends on a bug fix in another PR > https://github.com/apache/spark/pull/40 > > Any comment and feedback is welcome. > > Thanks. > > Sincerely, > > DB Tsai > Machine Learning Engineer > Alpine Data Labs > -------------------------------------- > Web: http://alpinenow.com/ >
