140 Governer's Drive
Amherst MA
Phone: 413-218-0624
Fax: 413-545-0067
The latest draft of my thesis can be found here (last updated 8/31/2010).
I am currently a graduate student in the Computer Science Department at the University of Massachusetts at Amherst under the advisement of Professor Brian Levine. I completed my Masters degree at UMass in 2005 and expect to complete my Ph.D. in the summer of 2010.
Please also see my curriculum vitae.
My passion is for solving computational problems found in real settings. I combine a deep understanding of modern approximation theory with extensive practical knowledge. I have a strong interest in coding, including everything from rapid prototyping to deployment. My work has involved the wired Internet, mobile and wireless networks, and even the power grid. I'm particularly strong at working with large data sets, real-time software systems, and rich Internet applications.
[PDF] Assessing the Vulnerability of Replicated Network Services, by George Dean Bissias, Brian Neil Levine, and Ramesh Sitaraman. In Submission , June 2010.
[PDF] Frequency-Based Relay Placement in Mobile Networks, by George Dean Bissias, Brian Neil Levine, and Ramesh Sitaraman. Technical Report UM-CS-2009-045, 2009.
[PDF] Surviving Attacks on Disruption-Tolerant Networks without Authentication, by John Burgess, George Dean Bissias, Mark Corner, and Brian Neil Levine. International Symposium on Mobile Ad Hoc Networking and Computing, September 2007.
[PDF] Bounding Damage From Link Destruction with Application to the Internet (extended abstract), by George Dean Bissias, Brian Neil Levine, and Arnold Rosenberg. In Proceedings of ACM SIGMETRICS, June 2007.
[PDF] Privacy Vulnerabilities in Encrypted HTTP Streams, by George Dean Bissias, Marc Liberatore, David Jensen, and Brian Neil Levine. In Proceedings of Privacy Enhancing Technologies Workshop (PET), May 2005.
[PDF] Nonlinear Diffusion Scale-Space and Fast Marching Level Sets for Segmentation of MR Imagery and Volume Estimation of Stroke Lesions, by Jerod Weinman, George Dean Bissias, Joseph Horowitz, Edward M. Riseman, Allen R. Hanson. International Conference on Medical Image Computing and Computer Assisted Intervention (MICCAI), May 2003.
[taktyl.com] A shopping website I created that uses advanced machine learning and graph theoretical techniques to layout products.
[scraper.jar] This is a java program that extracts product description information from Amazon.com.
[edgeCuts.tar] Here is a c program that uses the spectrum of a graph's Laplacian Matrix to provide a lower bound on the number of connected pairs of vertices after edge removal.
[knapsack.m] A matlab function that provides an upper bound (by maximum efficiency) and lower bound (via linear programming) for an arbitrary knapsack problem.