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https://issues.apache.org/jira/browse/MAHOUT-1374?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Aliaksei Litouka updated MAHOUT-1374:
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Status: Patch Available (was: Open)
userItemFile option was added. It allows to specify a file which contains
userID/itemID pairs. Recommendations for only these pairs will be included into
output. This option cannot be used simultaneously with usersFile or itemsFile
options.
> Ability to provide input file with userid, itemid pair
> ------------------------------------------------------
>
> Key: MAHOUT-1374
> URL: https://issues.apache.org/jira/browse/MAHOUT-1374
> Project: Mahout
> Issue Type: Improvement
> Components: Collaborative Filtering
> Affects Versions: 0.8
> Reporter: Romit Singhai
> Fix For: 1.0
>
>
> Currently while running the itembased recommender from the command line, user
> can get recommendation for a particular set of users by using the userFile
> option or for particular set of itemId's by using the itemFile option. Using
> these option together seems to provide recommendations for the cross product
> for the two inputs. We need an option say userItemFile where a coma separated
> userid,itemid pair is provide on each line as input and output will be
> userid,itemid,recommendation. This functionality will be very useful for lot
> users.
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