Clueweb data preprocess and training code

This repo contains the scripts to do stat over clueweb dataset (for subfeature project), and preprocess the data, and train the dataset.

• prepare_ranklib_input.sh: preprocess the raw data given by Michael
• train.sh: ranklib train (e.g. LambdaMART)
• show_map.sh and show_ndcg.sh: show training and testing results