I might be steering this a bit off topic: does this need the simplex method? this is just an instance of nonnegative least squares. I don't think it relates to LDA either.
Spark doesn't have any particular support for NNLS (right?) or simplex though. On Mon, Nov 2, 2015 at 6:03 PM, Debasish Das <debasish.da...@gmail.com> wrote: > Use breeze simplex which inturn uses apache maths simplex...if you want to > use interior point method you can use ecos > https://github.com/embotech/ecos-java-scala ...spark summit 2014 talk on > quadratic solver in matrix factorization will show you example integration > with spark. ecos runs as jni process in every executor. > > On Nov 1, 2015 9:52 AM, "Zhiliang Zhu" <zchl.j...@yahoo.com.invalid> wrote: >> >> Hi Ted Yu, >> >> Thanks very much for your kind reply. >> Do you just mean that in spark there is no specific package for simplex >> method? >> >> Then I may try to fix it by myself, do not decide whether it is convenient >> to finish by spark, before finally fix it. >> >> Thank you, >> Zhiliang >> >> >> >> >> On Monday, November 2, 2015 1:43 AM, Ted Yu <yuzhih...@gmail.com> wrote: >> >> >> A brief search in code base shows the following: >> >> TODO: Add simplex constraints to allow alpha in (0,1). >> ./mllib/src/main/scala/org/apache/spark/mllib/clustering/LDA.scala >> >> I guess the answer to your question is no. >> >> FYI >> >> On Sun, Nov 1, 2015 at 9:37 AM, Zhiliang Zhu <zchl.j...@yahoo.com.invalid> >> wrote: >> >> Dear All, >> >> As I am facing some typical linear programming issue, and I know simplex >> method is specific in solving LP question, >> I am very sorry that whether there is already some mature package in spark >> about simplex method... >> >> Thank you very much~ >> Best Wishes! >> Zhiliang >> >> >> >> >> > --------------------------------------------------------------------- To unsubscribe, e-mail: user-unsubscr...@spark.apache.org For additional commands, e-mail: user-h...@spark.apache.org
