Jolley Hall, CB 1045
1 Brookings Drive
Saint Louis, MO, USA 63130
phone: (314) 935-6165
Office: Jolley Hall 304C
Support for most of my research projects comes primarily from the National Science Foundation and from industrial partners; most recently Huawei and in the past companies such as Comcast, Sprint Labs, Nortel Networks, and Siemens (see Past project pages for details).
Spring 2018 Office Hours: Tues. & Thur. 4:00-5:00pm
Fall 2017: CSE 473 - Introduction to Computer Networks - Office Hours: Tues. & Thur. 3:00-4:00pm
Fall 2016: CSE 538 - Modeling and Performance Evaluation of Interconnected Computer Systems
November 2017: The paper “Opinion formation in Ising networks,” co-authored with M.H. Afrasiabi and S. Venkatesh was published in the Online Social Networks and Media Journal (Vol. 5, March 2018, pp. 1-22). The paper offers a possible explanation, arguably using a stylized model, for the emergence of highly polarized partisan's outcomes when party affiliation has a strong influence in how we weigh others opinions.
October2017: The paper titled “A Statistical Exploration of Protocol Adoption.” co-authored with M. Nikkhah, A. Mangal, and C. Dovrolis was published in the IEEE/ACM Transactions on Networking, Vol. 25, No. 5, October 2017. The paper analyzes data from a body of IETF standards (RFCs) to try to identify factors that contribute to the success (or failure) of proposed standards.
July 2017: As of July 1st, I have started my term as the new ACM SIGCOMM Chair, succeeding S. Keshav who held this position for the past 4 years. I am looking forward to working on making SIGCOMM even more successful and diverse than it has been over the nearly 50 years it has been in existence.
June 2017: The NetEcon 2017 Workshop was successfully held in Boston. I want to thank my Program co-Chair, Vince Conitzer, the authors of papers presented at the workshop, the members of the Program Committee who selected the papers, and all the workshop attendees for making it a success.
May 2017: The paper titled “Pricing and Bidding Strategies for Cloud Computing Spot Instances” co-authored with Jiayi Song was presented at the Smart Data Pricing Workshop. The paper explores the role of spot pricing in cloud computing, and in particular under what conditions the availability of a (variable) spot pricing service can increase the cloud providers' revenue when compared to an offering that only includes a fixed price on-demand service.
December 2016: The paper titled “Multipaths and Rate Stability” co-authored with Junjie Liu was presented at Globecom 2016. The paper explores and helps elucidate under which conditions the use of multipaths can result in a lower variance in the realized overall transmission rate between two points in a packet network.
Our IPv6 Monitoring project gathered several years of data on IPv6 adoption and tracked basic web performance when accessing web sites over either IPv6 and IPv4 to determine if and why differences were present. Most of the data remains available on the project web site that also boasts a “query” page that allows you to customize the type of data you want to retrieve. (See the project's original introductory presentation -the audio unfortunately only starts about 7 mins into the presentation- given at the Summer 2010 ESCC/Internet2 Joint Techs conference). The project started as a joint project with Comcast and was subsequently supported by an NSF grant that enabled us to better explore the data we were gathering as well as improve the web interface that provides access to the data. The insight derived from the data gathered as part of this project was ultimately documented in a paper titled “Migrating the Internet to IPv6: An exploration of the when and why,” co-authored with M. Nikkhah and published in 2016 in the IEEE/ACM Transactions on Networking.