Hi Karan, For now, the only way is to write your data in a text file (in a format similar to UCI Datasets) and then pass this file to the random forest.
--- En date de : Lun 7.6.10, Karan Jindal <[email protected]> a écrit : > De: Karan Jindal <[email protected]> > Objet: Re: Reg: Building Decision Forest using Mahout 0.3 > À: [email protected] > Date: Lundi 7 juin 2010, 6h03 > Hi deneche abdelhakim, > > If I want to implement a new input format for the random > forest say which > take sparse matrix as a input, How should I proceed in that > direction? > > Any ideas?? > > Regards > Karan > > > > > yes thats the documentation for Mahout's Decision > Forests, but as Ted > > noted before, you'll need to checkout the latest > version of the trunk. > > > > Please note that it's still a work in progress, I > would appreciate your > > feedback and suggestions. Feel free to ask questions > in this mailing list > > > > --- En date de : Lun 31.5.10, Karan Jindal > > <[email protected]> > a écrit : > > > >> De: Karan Jindal <[email protected]> > >> Objet: Re: Reg: Building Decision Forest using > Mahout 0.3 > >> À: [email protected] > >> Date: Lundi 31 mai 2010, 13h51 > >> Hi Ted, > >> > >> Thanks for the advice of using the latest version > of > >> mahout. > >> It worked for me :) . > >> > >> And also I followed this link > >> https://cwiki.apache.org/confluence/display/MAHOUT/Partial+Implementation > >> for running the mahout. > >> > >> > >> > >> > Mahout supports the construction of Random > Forests > >> which are a form of > >> > decision forest. > >> > > >> > It would be much easier for you to get > started if you > >> could upgrade to the > >> > current latest development version. Version > 0.3 > >> is the latest stable > >> > version, but lots of stuff has changed for > the better > >> since 0.3. > >> > > >> > In any case, the class that you are looking > for is > >> > org.apache.mahout.df.mapred.BuildForest. > >> > > >> > On Sun, May 30, 2010 at 10:08 PM, Karan > Jindal < > >> > [email protected]> > >> wrote: > >> > > >> >> > >> >> Hi all, > >> >> > >> >> I had installed the latest version of > mahout i.e. > >> 0.3. > >> >> I want to build a decision forest, but > didn't find > >> any documentation > >> >> which > >> >> guides to me to so. > >> >> > >> >> Can anyone tell me where to find such > documentaion > >> which will tell about > >> >> how to run mahout on hadoop and also > various > >> command line options for > >> >> Building Decision Tree? > >> >> > >> >> Regards > >> >> Karan > >> >> > >> > > >> > >> > > > > > > > > > > -- > > This message has been scanned for viruses and > > dangerous content by MailScanner, and is > > believed to be clean. > > > > > > > -- > This message has been scanned for viruses and > dangerous content by MailScanner, and is > believed to be clean. > >
