I think Ted was implying just write a script to aggregate the Movielens data by user id. Should be pretty straightforward.
On Jun 13, 2013, at 10:05 AM, Neetha <netasu...@gmail.com> wrote: > Thank you, for the reply. How can we group the user. > > > On Thu, Jun 13, 2013 at 3:41 PM, Ted Dunning <ted.dunn...@gmail.com> wrote: > >> [image: Boxbe] <https://www.boxbe.com/overview> This message is eligible >> for Automatic Cleanup! (ted.dunn...@gmail.com) Add cleanup >> rule<https://www.boxbe.com/popup?url=https%3A%2F%2Fwww.boxbe.com%2Fcleanup%3Ftoken%3DGYex%252FPN%252FsEWDwuSs%252F9AS43g45aYbNc1OMuaZA7xu3TRldhNItvxAspHuwKeaedBKYvZ5Ah5DVIK7%252F%252B0qQSbX3CvYa7lvPle4%252BTdcv5k4cI%252BL4yoMK8by1Rm7UhZnW7TcvFw%252FeqoeYWXhz%252BgDPSUIWA%253D%253D%26key%3D0Lbb2Ob2N7oax0oxeBQTRLmrOCps42qosLO9Gh82kvs%253D&tc_serial=14367563490&tc_rand=1983549237&utm_source=stf&utm_medium=email&utm_campaign=ANNO_CLEANUP_ADD&utm_content=001>| >> More >> info<http://blog.boxbe.com/general/boxbe-automatic-cleanup?tc_serial=14367563490&tc_rand=1983549237&utm_source=stf&utm_medium=email&utm_campaign=ANNO_CLEANUP_ADD&utm_content=001> >> >> You need to group by user before converting to vector to get sensible >> clustering. >> >> >> On Wed, Jun 12, 2013 at 1:06 PM, Grant Ingersoll <gsing...@apache.org >>> wrote: >> >>> The CSVVectorIterator in the Integration package will take in a CSV file >>> and produce vectors. It assumes that each row is the equivalent of a >>> DenseVector (does MovieLens fit that?) If you need otherwise, I'd >> suggest >>> starting with the code and modifying to fit your needs. >>> >>> >>> -Grant >>> >>> On Jun 12, 2013, at 6:11 AM, Neetha <netasu...@gmail.com> wrote: >>> >>>> Hi, >>>> >>>> >>>> I am using 1m movielens. >>>> >>>> I need to run the K-means clustering using mahout and hadoop. Actually, >>>> 1st step in the clustering is to convert into a sequence file, then >> into >>>> vector format and then apply the clustering algorithm. My doubt is, Is >>>> there any need to convert the movielens rating.csv file into a sequence >>>> file. If needed what are the commands for applying clustering technique >>>> using mahout and the hadoop. >>>> >>>> Thanking you, >>>> Neetha Suan Thampi >>> >>> -------------------------------------------- >>> Grant Ingersoll | @gsingers >>> http://www.lucidworks.com >>> >>> >>> >>> >>> >>> >> >> -------------------------------------------- Grant Ingersoll | @gsingers http://www.lucidworks.com
