dr. Marius PASCA Senior research scientist Google S.U.A. ----------------------------------- Open Domain Question-Answering Systems ----------------------------------- ABSTRACT ----------------------------------- At Google, we are committed to organizing the world's information and making it universally accessible and useful. Striving to achieve that goal involves addressing a number of challenges across a wide range of computing disciplines. Such challenges include systems issues involved in building large, scalable distributed systems as well as work in areas such as information retrieval, natural language processing, intelligent data analysis, and user interface design to make these systems effective at sifting, organizing, and presenting relevant information to the user. In this talk we will describe some of the issues in these areas, discuss a few of the interesting applications that Google has developed over the past few years, and highlight some of the behind-the-scenes pieces of infrastructure that we've built in order to operate Google's services. Along the way, we will share some interesting observations derived from Google's web data. SHORT CV ----------------------------------- Marius Pasca is a senior research scientist in the research group at Google. He earned a Ph.D. degree in Computer Science from Southern Methodist University, Dallas, Texas in December 2001, and an M.Sc. degree in Computer Science from Joseph Fourier University, Grenoble, France in June 1998. He is the author of the book "Open-domain question answering from large text collections", published in April 2003. Current research interests include factual information extraction from unstructured text and advanced matching functions for information retrieval.