Perhaps the best place to begin is the research overview section where you'll find brief overviews of YRL work in:
The site continues to offer a "webliography" of papers by members of the lab. Two papers just posted (abstracts only) that might be of interest are:
- Variable latent semantic indexing by Ravi Kumar, Prabhakar Raghavan, Andrew Tomkins
- Unweaving a web of documents by Ravi Kumar
Links are also made available where you can request a copy of these and other papers from the author(s).
Finally, the YRL site still offers to access bios (now with pictures) of each member of the YRL staff.