Re: Spark Matrix Factorization

2014-06-28 Thread Krakna H
on your particular > dataset DSGD is converging to a better minima... > > If you want I can put the DSGD code base that I used for experimentation > on > github...I am not sure if Professor Re already put it on github... > > > On Sat, Jun 28, 2014 at 2:46 AM, Krakna H <[hidden

Re: Spark Matrix Factorization

2014-06-28 Thread Krakna H
t; run fairly large datasets... > > Be careful about the default Jellyfish...it has been tuned for netflix > dataset (regularization, rating normalization etc)...So before you compare > RMSE make sure ALS and Jellyfish is running same algorithm (L2 regularized > Quadratic Loss)

Re: Spark Matrix Factorization

2014-06-27 Thread Krakna H
Hi all, Just found this thread -- is there an update on including DSGD in Spark? We have a project that entails topic modeling on a document-term matrix using matrix factorization, and were wondering if we should use ALS or attempt writing our own matrix factorization implementation on top of Spar

Re: Calling Spark enthusiasts in NYC

2014-03-31 Thread Krakna H
Would love to see this happen and happy to help set this up in NYC. On Mon, Mar 31, 2014 at 1:52 PM, andy [via Apache Spark Developers List] < ml-node+s1001551n6167...@n3.nabble.com> wrote: > Responses about London, Montreal/Toronto, DC, Chicago. Great coverage so > far, and keep 'em coming! (st