Neither of your questions meets the Posting Guidelines (see footer of any email). 1) Not reproducible. [1] 2) Very operating-system specific and a FAQ. You have not indicated what your OS is (via sessionInfo), nor what reading you have done to address memory problems already (use a search engine... or begin with the FAQs in R help or on CRAN).
[1] http://stackoverflow.com/questions/5963269/how-to-make-a-great-r-reproducible-example --------------------------------------------------------------------------- Jeff Newmiller The ..... ..... Go Live... DCN:<jdnew...@dcn.davis.ca.us> Basics: ##.#. ##.#. Live Go... Live: OO#.. Dead: OO#.. Playing Research Engineer (Solar/Batteries O.O#. #.O#. with /Software/Embedded Controllers) .OO#. .OO#. rocks...1k --------------------------------------------------------------------------- Sent from my phone. Please excuse my brevity. Lorenzo Isella <lorenzo.ise...@gmail.com> wrote: >Dear All, >For a data mining project, I am relying heavily on the RandomForest and > >Party packages. >Due to the large size of the data set, I have often memory problems (in > >particular with the Party package; RandomForest seems to use less >memory). >I really have two questions at this point >1) Please see how I am using the Party and RandomForest packages. Any >comment is welcome and useful. > > > >myparty <- cforest(SalePrice ~ ModelID+ > ProductGroup+ > ProductGroupDesc+MfgYear+saledate3+saleday+ > salemonth, > data = trainRF, >control = cforest_unbiased(mtry = 3, ntree=300, trace=TRUE)) > > > > >rf_model <- randomForest(SalePrice ~ ModelID+ > ProductGroup+ > ProductGroupDesc+MfgYear+saledate3+saleday+ > salemonth, > data = trainRF,na.action = na.omit, > importance=TRUE, do.trace=100, mtry=3,ntree=300) > >2) I have another question: sometimes R crashes after telling me that >it >is unable to allocate e.g. an array of 1.5 Gb. >However, I have 4Gb of ram on my box, so...technically the memory is >there, but is there a way to enable R to use more of it? > >Many thanks > >Lorenzo > >______________________________________________ >R-help@r-project.org mailing list >https://stat.ethz.ch/mailman/listinfo/r-help >PLEASE do read the posting guide >http://www.R-project.org/posting-guide.html >and provide commented, minimal, self-contained, reproducible code. ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.