My intent was not to mix the user id and item ids but maybe show a list of recommendations by the user id and another list by the item ids. The current use case is shopping cart recommendations. So I both have a user id and a list of item ids in the shopping cart.
2017-05-16 19:42 GMT+02:00 Pat Ferrel <[email protected]>: > Answers below: > > > On May 16, 2017, at 10:19 AM, Dennis Honders <[email protected]> > wrote: > > Hi, > > 1. > I already used similar product template for experimenting. > https://predictionio.incubator.apache.org/templates/similarproduct/ > quickstart/ > > For UR, are the data queries for the eventserver about the same, but can > take more properties? In my case three events. Set users, set items and set > buys. > > The UR only needs the buys and determines users and items from the buys, > you’d do better is you have other events like product detail views, or > category of item bought, etc. > > 2. > I have coordinates for the users. Is this supported as property? > > Yes to location but lat/lon is problematic. Some area location like postal > code or something like country+province+city works much better. These need > to be able to contain more than one person so lat/lon is theoretically not > applicable since it is too fine grained. > > Note: in my case I like to make predictions by user id and by an array of > item ids which is supported, also for products that are never bought for > cold start. I have item properties like category id, manufacturer id, label > and price range. > > All are supported but I’ll warn that you should test these results, mixing > user-id and item-sets has no theoretical basis for working and without > correct boosting of one over the other may interfere and create less good > results. Also item-sets can work to produce either "similar items" > or “complimentary items” as in things you might want in the same shopping > cart. These require different model building. > > How are you generating the array of items? what is your goal for this? If > you want items similar to the one being viewed—on the current page for > instance, use an item-based query, it will return similar items to the one > viewed and can mix with user-based items. > > In general everything you mention is supported but my gut feel is that it > may be overly complicated so I’d advise A/B testing with a stripped down > simple query against this query to see if it really does produce better > conversions. Let you data be your guide—intuition must be tested. Adding > rules is often needed and is supported but may also reduce conversion lift > in unexpected ways. > > Thanks in advance > >
