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From "Martin, Nick" <NiMar...@pssd.com>
Subject Re: Getting rating for all the files
Date Sun, 29 Sep 2013 11:29:07 GMT
There should be a score after each recommended item (i.e. 123456:2.6) in your output. Lower
scores would be the ones you're interested in. 

Sent from my iPhone

On Sep 28, 2013, at 8:25 AM, "Deepak Subhramanian" <deepak.subhramanian@gmail.com> wrote:

> Hi
> 
> I am trying to predict the ratings for some items for some users using item
> based collaborative filtering. I tried using the mahout recommenditembased
> , but it shows only the top 10 items or I can increase it by passing the
> --numRecommendations parameter. But it doesnt shows items which has lower
> predicted rating . What is the best approach to get ratings for items which
> has low predicted rating ?
> 
> 
> I tried this command.
> 
> mahout recommenditembased --input mahoutrecoinput --usersFile
> recouserlist  --itemsFile  recoitemlist --output
> /mahoutrecooutputpearsonnew -s SIMILARITY_PEARSON_CORRELATION
> --numRecommendations 4000  --maxPrefsPerUser 4000
> 
> Also I tried using the estimatePreference method on the recommender.
> 
> Please help .

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