Microsoft Releases Learning to Rank Datasets

Microsoft Research announced that it is releasing a new MS LTR dataset
         After the Recent Learn to Rank Contest held by Yahoo! , Microsoft has presented a similar Dataset :: I am presenting both the dataset's statistics ::

Yahoo! ::. The first dataset had:
29,921 queries
744,692 URLs
519 features

Microsoft :: Released two large scale datasets for research on learning to rank: MSLR-WEB30k with   more than 30,000 queries and a random sampling of it MSLR-WEB10K with 10,000 queries.136 features have been extracted for each query-url pair.The dataset is a retired dataset. What makes this quite interesting is that the features have been released.

You can see the feature list.

See also the Y! LTR datasets.