Question for RecommenderJob

Hi all, I have a question when I use RecommenderJob for item-based recommendation. My input data format is userid,itemid,1, so I set booleanData option is true. The length of users is 9,000,000 but the length of item is 200. When I run the RecommenderJob, the result is null. I try many times

Re: Question for RecommenderJob

: Which version of Mahout are you using? Did you check the output, are you sure that no errors occur? Best, Sebastian On 01.08.2013 09:59, hahn jiang wrote: Hi all, I have a question when I use RecommenderJob for item-based recommendation. My input data format is userid,itemid,1, so I