Fair enough but I'd say you hit that diminishing return after 20 iterations or so... :)
On Thu, Apr 2, 2015 at 9:39 AM, Justin Yip <yipjus...@gmail.com> wrote: > Thanks Xiangrui, > > I used 80 iterations to demonstrates the marginal diminishing return in > prediction quality :) > > Justin > On Apr 2, 2015 00:16, "Xiangrui Meng" <men...@gmail.com> wrote: > >> I think before 1.3 you also get stackoverflow problem in > ~35 >> iterations. In 1.3.x, please use setCheckpointInterval to solve this >> problem, which is available in the current master and 1.3.1 (to be >> released soon). Btw, do you find 80 iterations are needed for >> convergence? -Xiangrui >> >> On Wed, Apr 1, 2015 at 11:54 PM, Justin Yip <yipjus...@prediction.io> >> wrote: >> > Hello, >> > >> > I have been using Mllib's ALS in 1.2 and it works quite well. I have >> just >> > upgraded to 1.3 and I encountered stackoverflow problem. >> > >> > After some digging, I realized that when the iteration > ~35, I will get >> > overflow problem. However, I can get at least 80 iterations with ALS in >> 1.2. >> > >> > Is there any change to the ALS algorithm? And are there any ways to >> achieve >> > more iterations? >> > >> > Thanks. >> > >> > Justin >> >> --------------------------------------------------------------------- >> To unsubscribe, e-mail: user-unsubscr...@spark.apache.org >> For additional commands, e-mail: user-h...@spark.apache.org >> >>
