>From what you describe so far, you do not need any new code. A Rescorer does what you want, I believe. If not, maybe you can explain more about what it's not doing that you want it to do. A Rescorer to exclude items is probably always a good idea as it saves computation.
On Fri, Jul 1, 2011 at 7:03 PM, Em <[email protected]> wrote: > Hi Sean, > > I am not very familiar with the code itself, however I have no problem > with digging into it. > > I guess the CandidateItemStrategy and the Rescorer are usable for all > kinds of recommendations: user-user, user-item, item-item etc. and so I > can create a generic (or general) implementation for the problem? > > Could you explain more of the tradeoffs for both > implementation-possibilities, please? > > Regards, > Em > > Am 01.07.2011 19:01, schrieb Sean Owen: >> The short answer is that you'd have to modify the code to inject this >> kind of logic -- though you might get away with just using a custom >> CandidateItemStrategy in an item-based recommender. >> >> A Rescorer will cause it to not bother computing estimated values for >> unwanted items though, so I think it already does what you intend. >> >> On Fri, Jul 1, 2011 at 5:56 PM, Em <[email protected]> wrote: >>> Hello list, >>> >>> is it possible to filter out some items/users from the >>> recommendation-process? >>> >>> In some cases one does not want to include information from some sources in >>> special situations. >>> >>> As an example you can imagine an onlineshop. If you click on the category >>> "women" it would be the best to only show recommendations for this >>> main-category rather than also showing some stuff for men. >>> >>> A Rescorer could be a solution to filter out those unwanted results *after* >>> the big part is done (am I correct?), however I do not want to spend >>> ressources on computing probabilities for items that are definitly unwanted >>> for the resultset. >>> >>> What I want is something like a >>> SELECT col1, col2, col3 FROM myData WHERE category = "women" OR category = >>> "subcategoryOfWomen" >>> and than do the computation on top of this dataset. >>> >>> Is this possible with Mahout? >>> >>> Regards, >>> Em >>> >>> -- >>> View this message in context: >>> http://lucene.472066.n3.nabble.com/Exclude-by-RuleSet-tp3129982p3129982.html >>> Sent from the Mahout User List mailing list archive at Nabble.com. >>> >> >
