Jamie Callan Papers on DiSC'04 Unified Utility Maximization Framework for Resource Selection The Robustness of Content-based Search in Hierarchical Peer to Peer Networks From the Chair Keith van Rijsbergen Named ACM Fellow From the Chair The SIGIR Peer-to-Peer Information Retrieval Workshop SIGIR Services Information retrieval for language tutoring: an overview of the REAP project Merging Retrieval Results in Hierarchical Peer-to-Peer Networks Effect of varying number of documents in blind feedback: analysis of the 2003 NRRC RIA workshop "bf_numdocs" experiment suite The effect of document retrieval quality on factoid question answering performance Publications Note: Links lead to the DBLP on the Web. Jamie Callan ©2005 Association for Computing Machinery