I think you have to modify the source code by incorporating some filters. -----邮件原件----- 发件人: Akshay Jain [mailto:jaks...@gmail.com] 发送时间: 2011年11月8日 17:24 收件人: user@mahout.apache.org 主题: Collaborative filtering help needed
Hi. Let me first say a BIG "THANKS" to the Mahout community and the authors of the book "Mahout In Action". I have just started with Hadoop and Mahout and am finding them extremely useful. I am running the following code: hadoop jar mahout-core-0.5-job.jar org.apache.mahout.cf.taste.hadoop.item.RecommenderJob -Dmapred.input.dir=input/input.txt -Dmapred.output.dir=output --userFile input/users.txt --BooleanData How do I specify that I want to get predictions for only specific items and not the top 10 recommedations for the specified users in the "usersFile" file? I want to enter the file as following: User1,Item23 User1,item344 User2,item12 user56,236 etc and want to get results like: User1,Item23,Predictd_Rating=4.5 User1,item344, Predictd_Rating=8 User2,item12, Predictd_Rating=1 user56,236, Predictd_Rating=2 etc I can specify a "itemsFile" but that would not serve the purpose as I do not want to specify a ItemsList from where to get the recommendations. I want only one recommendation for the User*Item combination that I have to be predicted. Thank you.
