June 2010 - talks - lists.cs.princeton.edu

11am Tue Jun 15 talk on wide-area route control for distributed services
by Jennifer Rexford 14 Jun '10

14 Jun '10

Speaker: Vytautas Valancius, Georgia Tech Title: Wide-Area Route Control for Distributed Services Date/time: 11:00-11:45am, Tuesday June 15 Location: 402 in CS building Abstract: Many distributed services would benefit from control over the flow of traffic to and from their users, to offer better performance and higher reliability at a reasonable cost. Unfortunately, although today's cloud-computing platforms offer elastic computing and bandwidth resources, they do not give services control over wide-area routing. We propose replacing the data center's border router with a Transit Portal (TP) that gives each service the illusion of direct connectivity to upstream ISPs, without requiring each service to deploy hardware, acquire IP address space, or negotiate contracts with ISPs. Our TP prototype supports many layer-two connectivity mechanisms, amortizes memory and message overhead over multiple services, and protects the rest of the Internet from misconfigured and malicious applications. Our implementation extends and synthesizes open-source software components such as the Linux kernel and the Quagga routing daemon. We also implement a management plane based on the GENI control framework and couple this with our four-site TP deployment and Amazon EC2 facilities. Bio: Vytautas Valancius is a Ph.D candidate at Georgia Institute of Technology, advised by professor Nick Feamster. His research interests include interdomain routing, Internet economics, and network virtualization. Prior to his Ph.D studies, Vytautas obtained M.S. in KTH, Sweden and worked in the networking industry as a consultant for 5 years, earning CCIE#14359 certification.

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R Fiebrink preFPO
by Rebecca A. Fiebrink 07 Jun '10

07 Jun '10

Rebecca Fiebrink will present her preFPO on Monday, June 14 at 3:00 PM in room 402. The members of her committee are: Perry Cook, advisor; Dan Morris of Microsoft Research and Dan Trueman, readers; Adam Finkelstein and Ken Steiglitz, nonreaders. Everyone is invited to attend her talk. Her abstract follows below. -------------------------------------------- Title: Real-time Human-Computer Interaction with Supervised Learning Algorithms for Music Composition and Performance Abstract: Supervised learning offers a useful set of algorithmic tools for many problems in computer music composition and performance. Through the use of training examples, these algorithms offer human musicians a means to implicitly specify the relationship between low-level, human-generated control signals (such as gesturally-manipulated sensor outputs or audio captured by a microphone) and the desired computer response (such as a change in synthesis or structural parameters of dynamically-generated audio). In my work, I explore how to most effectively enable users to interact with supervised learning algorithms to compose and perform new music. I have built a general-purpose software system for applying standard supervised learning algorithms in real-time problem domains. This system, called the Wekinator, supports human interaction throughout the entire supervised learning process, including the generation of training examples and the application of trained models to real-time inputs. Already, the Wekinator has enabled the creation of several new compositions and instruments. Furthermore, this system has enabled me to study several aspects of human-computer interaction with supervised learning in computer music. I have used the Wekinator as a foundation for a participatory design process with practicing composers, work with non-expert users in a classroom context, and the design of a gesture recognition system for a sensor-augmented cello bow. This research has led to a clearer characterization of the requirements and goals of instrument builders and composers, a better understanding of how to design user interfaces for supervised learning in both real-time and creative application domains, and a greater insight into the roles that interaction (encompassing both human-computer control and computer-human feedback) can play in the development of systems containing supervised learning components. This work highlights how music and other creative endeavors differ from more traditional applications of supervised learning, and it contributes to a broader HCI perspective on machine learning practice.

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11am Tue Jun 15 talk on wide-area route control for cloud services
by Jennifer Rexford 02 Jun '10

02 Jun '10

Speaker: Vytautas Valancius, Georgia Tech Title: Wide-Area Route Control for Distributed Services Date/time: 11:00-11:45am, Tuesday June 15 Location: 402 in CS building Abstract: Many distributed services would benefit from control over the flow of traffic to and from their users, to offer better performance and higher reliability at a reasonable cost. Unfortunately, although today's cloud-computing platforms offer elastic computing and bandwidth resources, they do not give services control over wide-area routing. We propose replacing the data center's border router with a Transit Portal (TP) that gives each service the illusion of direct connectivity to upstream ISPs, without requiring each service to deploy hardware, acquire IP address space, or negotiate contracts with ISPs. Our TP prototype supports many layer-two connectivity mechanisms, amortizes memory and message overhead over multiple services, and protects the rest of the Internet from misconfigured and malicious applications. Our implementation extends and synthesizes open-source software components such as the Linux kernel and the Quagga routing daemon. We also implement a management plane based on the GENI control framework and couple this with our four-site TP deployment and Amazon EC2 facilities. Bio: Vytautas Valancius is a Ph.D candidate at Georgia Institute of Technology, advised by professor Nick Feamster. His research interests include interdomain routing, Internet economics, and network virtualization. Prior to his Ph.D studies, Vytautas obtained M.S. in KTH, Sweden and worked in the networking industry as a consultant for 5 years, earning CCIE#14359 certification.

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