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![]() Small World Problem lecture slides (PDF) | ![]() Reading: An Experimental Study of the Small World Problem, J. Travers and S. Milgram Sociometry 32 425-443 (1969) Available from http://links.jstor.org/sici?sici=0038-0431%28196912%2932%3A4%3C425%3AAESOTS%3E2.0.CO%3B2-W (PDF) | ![]() Reading: The Strength of Weak Ties, M.S. Granovetter The American Journal of Sociology 78 1360--1380 (1973) http://www.jstor.org/stable/2776392 (PDF) | ![]() Reading: Worldwide Buzz: Planetary-Scale Views on an Instant-Messaging Network, J. Leskovec and E. Horvitz MSR-TR-2006-186. Microsoft Research, June 2007. http://research.microsoft.com/%7Ehorvitz/Leskovec_Horvitz_worldwide_buzz.pdf (PDF) |