Ray R. Larson is an Full Professor in the U.C. Berkeley School of Information. He specializes in the design and performance evaluation of information retrieval systems and digital libraries, and the evaluation of user interaction with those systems. His background includes work as a programmer/analyst with the UC Division of Library Automation (DLA) where he was involved in the design, development, and performance evaluation of the MELVYL system. He holds a BA and MS from California State University Fullerton and a PhD from U.C. Berkeley. He has published in the areas of information systems evaluation and information retrieval.