Hi all, I am getting familiarized with Mllib and a thing I noticed is that running the MovieLensALS example on the movieLens dataset for increasing number of iterations does not decrease the rmse.
The results for 0.6% training set and 0.4% test are below. For training set to 0.8%, the results are almost identical. Shouldn’t it be normal to see a decreasing error? Especially going from 1 to 5 iterations. Running 1 iterations Test RMSE for 1 iter. = 1.2452964343277886 (52.757125927000004 s). Running 5 iterations Test RMSE for 5 iter. = 1.3258973764470259 (61.183927666 s). Running 9 iterations Test RMSE for 9 iter. = 1.3260308117704385 (61.84948875800001 s). Running 13 iterations Test RMSE for 13 iter. = 1.3260310099809915 (73.799510125 s). Running 17 iterations Test RMSE for 17 iter. = 1.3260310102735398 (77.56512185300001 s). Running 21 iterations Test RMSE for 21 iter. = 1.3260310102739703 (79.607495074 s). Running 25 iterations Test RMSE for 25 iter. = 1.326031010273971 (88.631776301 s). Running 29 iterations Test RMSE for 29 iter. = 1.3260310102739712 (101.178383079 s). Thanks a lot, Kostas --------------------------------------------------------------------- To unsubscribe, e-mail: user-unsubscr...@spark.apache.org For additional commands, e-mail: user-h...@spark.apache.org
