CIIR alum Fernando Diaz (Ph.D. '04), former CIIR Research Professor and UMass Amherst CS alum Jamie Callan (Ph.D. '93), and co-authors Jaime Arguello (CMU) and Jean-Francois Crespo (Yahoo! Labs Montreal), received the Best Paper Award at the 32nd Annual International ACM SIGIR Conference on Research and Development in Information Retrieval (SIGIR '09) for their paper "Sources of Evidence for Vertical Selection." Fernando is currently a Research Scientist at Yahoo! Labs Montreal and Jamie is a Professor of Computer Science at Carnegie Mellon University.