The current feature extraction implementation in Solr is oriented to the Learning To Rank re-ranking capability, it is not built for feature extraction ( to then train your model).
I am afraid you will need to implement your own system, that does multiple queries to Solr with the extraction feature enabled and then parse the results to build your training set. Do you have query level or query dependant features ? In case you are lucky enough to just have document level features, you may end up in a slightly simplified scenario. Cheers ----- --------------- 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
