Hi, I am working on to implementing Solr LTR in Solr 7.4.0 by using the NeuralNetworkModel for the feature selection and model training, and I have found this site which uses RankNet: https://github.com/airalcorn2/Solr-LTR#RankNet
Has anyone tried on this before? And what is the format of the training data that this model requires? Regards, Edwin