Tuesday, October 30, 2007 
                    6:00 p.m.  
                  
                   Introduction by Dr. Tim McTiernan, Vice-President, Research, 
                    UofT 
                  
                  Jon Kleinberg,  
                    Professor of Computer Science, Cornell University
                   The Geography of Social and Information Networks
                   The rapid evolution of the on-line world over the past decade 
                    represents a blending of social and technological networks, 
                    and it is changing the ways in which we interact with information 
                    and with each other. It is also the leading edge of a revolution 
                    in measurement, with the digital traces of on-line interaction 
                    enabling the study of social processes at unprecedented levels 
                    of scale and resolution.  
                     
                    Making sense of this kind of data, and using it to shape the 
                    networks we inhabit, raise many new questions --- among them, 
                    how to synthesize information when there are a billion sources 
                    providing it; how to reason about privacy in a world where 
                    almost every transaction is recorded; and how to develop the 
                    scientific principles that can relate individual behavior 
                    to global properties of large populations. The resulting challenges 
                    require new ideas in mathematics, computing, and the social 
                    sciences, and point to opportunities at the emerging interface 
                    of these disciplines. 
                   
                   
                  Jon Kleinberg is a Professor in the Department of Computer Science 
                  at Cornell University. His research interests are centered around 
                  issues at the interface of networks and information, with an 
                  emphasis on the social and information networks that underpin 
                  the Web and other on-line media. He is a Fellow of the American 
                  Academy of Arts and Sciences, and the recipient of MacArthur, 
                  Packard, and Sloan Foundation Fellowships, the Nevanlinna Prize 
                  from the International Mathematical Union, and the U.S. National 
                  Academy of Sciences Award for Initiatives in Research. 
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