Let say user has option for selecting item based on preference such as Drama, Horror etc.
Can we have built implement ItemSimilarities with class? Also I have items of video, news and shopping. Due to low rating of news I see only video and shopping? How can I get news recommended? I am using Loglikelyhoodsimilarities. Regards, Cleophus P. -----Original Message----- From: Sean Owen [mailto:[email protected]] Sent: Monday, July 16, 2012 4:41 PM To: Cleophus Pereira Cc: Mahout User List Subject: Re: Need help on Mahout Recommendation - using Preferences On Mon, Jul 16, 2012 at 9:33 AM, Cleophus Pereira <[email protected]> wrote: > You mentioned to use IDRescorer to get data based on user preferences. But > in mahout schema we have just itemid (number) and scores(double). How can we > determine purely based on this what is user preference. I don't know what you mean -- there is no user preference involved here. You are considering recommending item A to user B because it has estimated pref value X. B has no existing pref for A or else it would not be a candidate! > I have implemented class IDRescorer and overrided to method - isFiltered and > rescorer which return results based on rating value(double). > > In such case do I need to get preference details for each ItemID and put > validation in isFiltered. This will cause overhead while running everytime. > As I need to get user preferences and match with preference details for each > item id. > Is this the way you recommend? If my understanding is right will not it > affect the performance? You can do whatever you want in this method -- there is no *need* about it. I can't think of a realistic use case that needs looking up a pref. Information transmitted by this e-mail is proprietary to MphasiS, its associated companies and/ or its customers and is intended for use only by the individual or entity to which it is addressed, and may contain information that is privileged, confidential or exempt from disclosure under applicable law. If you are not the intended recipient or it appears that this mail has been forwarded to you without proper authority, you are notified that any use or dissemination of this information in any manner is strictly prohibited. In such cases, please notify us immediately at [email protected] and delete this mail from your records.
