Hi, let me see if I got your problem : your "user specific" features are Query dependent features from Solr side. The value of this feature depends on a query component ( the user Id) and a document component( product Id) You can definitely use them. You can model this feature as a binary feature. 1 means the product was coming from friends 0 means the product was not.
At training time, you need to provide the value to each training row. At query time you may need a custom feature type. You can pass the user id as an EFI. In that situation the custom feature will query the external server to get the friend's products and then you can calculate it. Of course you can implement the custom feature as you wish. That will strictly depend on how you decide to implement the user-product interactions tracking and retrieval system. ----- --------------- Alessandro Benedetti Search Consultant, R&D Software Engineer, Director Sease Ltd. - www.sease.io -- Sent from: http://lucene.472066.n3.nabble.com/Solr-User-f472068.html
