Hi Ricardo, please don't forget to answer to [email protected] too, your mails seem to be adressed to me only. Additionally attachments don't work on the mailing list.
You can happily ignore the files written into the temp-folder, the are just needed for the job's internals. You'll find more information here: https://cwiki.apache.org/confluence/display/MAHOUT/Itembased+Collaborative+Filtering and here: http://www.slideshare.net/sscdotopen/mahoutcf --sebastian Am 02.01.2011 10:46, schrieb Ricardo: > THXS. > I did that, and 3 folders were created under the directory that I added. > Only one of them (itemIDIndex) had files in it (attached), and are > unreadable. > Isn't any example somewhere, where I can practice with existing data to get > used to the syntax and results? > > I tried the links below, but none of them are detailed enough for somebody > who never used the program before. > > https://cwiki.apache.org/confluence/display/MAHOUT/Recommender+Documentation > > http://philippeadjiman.com/blog/2009/11/11/flexible-collaborative-filtering- > in-java-with-mahout-taste/ > > > THXS > > Ricardo > > -----Original Message----- > From: Sebastian Schelter [mailto:[email protected]] > Sent: Sunday, January 02, 2011 11:28 AM > To: Ricardo; [email protected] > Subject: Re: itemsimilarity > > Hi Ricardo, > > Mahout's jobs need a temporary directory for intermediate files. If you > don't supply a path for that, they will create a temp folder in the > directory where you started the job. Additionally a job will not be able > to write to that directory if it already exists, which is the cause for > your exception. > > Add a parameter --tempDir to your invocation and make sure it points to > a non existing directory. > > --sebastian > > Am 02.01.2011 10:22, schrieb Ricardo: THXS. >> My syntax looks: >> ./mahout itemsimilarity --input ../cf/taste/.... --output ..//... >> --similarityClassname SIMILARITY_EUCLIDEAN_DISTANCE --booleanData >> The output I get: >> ...Exemption in thread "main" >> org.apache.hadoop.mapred.FileAlreadyExistsException: Output directory >> temp/itemIDIndex already exists ..... >> >> Ricardo >> >> >> >> -----Original Message----- >> From: Sebastian Schelter [mailto:[email protected]] >> Sent: Wednesday, December 29, 2010 5:59 PM >> To: [email protected] >> Cc: [email protected] >> Subject: Re: itemsimilarity >> >> -dev +user >> >> Hi Ricardo, >> >> can you provide more details about what exactly doesn't work? Do you get >> an exception or do you get empty results? >> >> --sebastian >> >> Am 29.12.2010 14:32, schrieb Ricardo: >>> Hi: >>> I am completely new at mahout. I have just installed all the components >>> needed, however I don't succeed running a query. >>> >>> I prepared a text file that looks: "user id, item id, rate", and run the >>> syntax ./mahout itemsimilarity -input ../././text file --output >>> ../././folder >>> >>> However it doesn't succeed. I've looked all over, but can't find in the >> NET >>> a clear example/tutorial that I can follow in order to learn the syntax. >>> >>> THXS >>> >>> >>> >>> Ricardo >>> >>> >>> >>> >>> >>> >> >> >> > > >
