What's New

LETOR 2.0 was released in December, 2007. With this new release, we have the following items added:

• More baseline results on the LETOR dataset, including ListNet, AdaRank, FRank and MHR.
• Updated evaluation tools (Eval-Rank.pl and Eval-ttest.pl).
• A channel to accept more baselines from other researchers.
• A discussion board for researchers to exchange their ideas on learning to rank and the LETOR dataset.
• A hub for researcher/research groups, papers and resources on learning to rank.

Hope by doing this, LETOR can be more useful for the research community of learning to rank.


A kind reminder, when you want to use the LETOR dataset in your research work, please

• Read and acknowledge the online agreement: <Agreement on using LETOR>
• Cite the following paper: Tie-Yan Liu, Jun Xu, Tao Qin, Wenying Xiong and Hang Li, LETOR: Benchmark dataset for research on learning to rank for information retrieval, LR4IR 2007, in conjunction with SIGIR 2007.