- talks - lists.cs.princeton.edu

12pm Thu Jul 30, Sharon Goldberg FPO
by Jennifer Rexford 26 Jul '09

26 Jul '09

Sharon Goldberg (ELE) will present her FPO at noon on Thursday July 30 in room 302 in the CS building. Speaker: Sharon Goldberg Title: Towards Securing Interdomain Routing on the Internet Date/time: 12pm Thursday July 30 Place: CS 302 All are welcome to attend.

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W Xu FPO
by Melissa Lawson 24 Jul '09

24 Jul '09

Wen Xu will present her FPO on Thursday July 30 at 2PM in Room 402. The members of her committee are: Jennifer Rexford, advisor; Vivek Pai and Kai Li, readers; Larry Peterson and Andrea LaPaugh, nonreaders. A copy of her thesis, "MIRO: Multi-path Interdomain ROuting", is on display in Room 310. Everyone is invited to attend her talk.

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A Misra FPO
by Melissa Lawson 20 Jul '09

20 Jul '09

Ananya Misra will present her FPO on Monday July 27 at 1PM in Room 402. The members of her committee are: Perry Cook, advisor; Dan Trueman (Music) and Georg Essl (Deutsche Telecom), readers; Szymon Rusinkiewicz and Ken Steiglitz, nonreaders. A copy of her thesis, "TAPESTREA: Techniques and Paradigms for Expressive Synthesis, Transformation, and Re-composition of Environmental Audio", is on display in room 310. Everyone is invited to attend her talk.

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M Hoffman preFPO
by Melissa Lawson 08 Jul '09

08 Jul '09

Matt Hoffman will present his preFPO on Tuesday July 14 at 2PM in Room 402. The members of his committee are: Perry Cook, advisor; David Blei and Ken Steiglitz, readers; Rob Schapire and Adam Finkelstein, nonreaders. Everyone is invited to attend his talk. His abstract follows below. -------------------------------------------- Probabilistic Graphical Models for the Analysis and Synthesis and of Musical Audio Content-based Music Information Retrieval (MIR) systems seek to automatically extract meaningful information from musical audio signals. This thesis applies new and existing generative probabilistic models to several content-based MIR tasks: timbral similarity estimation, semantic annotation and retrieval, and latent source discovery and separation. In order to estimate how similar two songs sound to one another, we employ a Hierarchical Dirichlet Process (HDP) mixture model to discover a shared representation of the distribution of timbres in each song. Comparing songs under this shared representation yields better query-by-example retrieval quality and scalability than previous approaches. To predict what tags are likely to apply to a song (e.g., "rap," "happy," or "driving music"), we develop the Codeword Bernoulli Average (CBA) model, a simple and fast mixture-of-experts model. Despite its simplicity, CBA performs at least as well as state-of-the-art approaches at automatically annotating songs and finding to what songs in a database a given tag most applies. Finally, we extend the HDP to discover the latent sonic sources (e.g. bass drums, guitar chords, etc.) that are present in sets of songs and to allow the isolation or suppression of individual sources. The ability of our Shift-Invariant HDP (SIHDP) to decide how many latent sources are necessary to model the data is particularly valuable in this application, since it is impossible to guess a priori how many sounds will appear in a given song or set of songs. Once they have been fit to data, probabilistic models can also be used to drive the synthesis of new musical audio, both for creative purposes and to qualitatively diagnose what information a model does and does not capture. If our model works on a feature representation of audio, then we need techniques to produce audio characterized by arbitrary feature vectors. In order to address this problem, we develop Feature-Based Synthesis (FBS), a general framework for automatically finding synthesizer parameters that will reproduce arbitrary perceptual features. FBS also allows us to create "non-phonorealistic" renditions of songs that match some but not all of a song's perceptual characteristics. Along similar lines, we can adapt the SIHDP model to create new versions of input audio with arbitrary sample sets, for example, to create a sound file that matches a song as closely as possible by combining spoken text.

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4:30pm Thu Jun 25 talk on P2P live video streaming in E-Quad B-205
by Jennifer Rexford 23 Jun '09

23 Jun '09

Speaker: S. H. Gary Chan, Department of Computer Science and Engineering The Hong Kong University of Science and Technology (HKUST) Title: Proxy-P2P Live Streaming Date/time: 4:30pm on Thursday June 25th Location: B-205 in the E-Quad Abstract: Peer-to-peer (P2P) is a promising technique for live streaming to large distributed group (such as IPTV services). In this talk, we address the design of a proxy-based peer-to-peer (proxy-P2P) streaming network, where the proxies (or super-nodes) are used as "backbone" to carry streams to local users (peers). Users, after mapping to their nearby proxies, get their streams in a peer-to-peer manner. We investigate how to achieve bandwidth-efficient low-delay streaming in such a network. At the proxy level, we study the use of mesh to achieve a certain streaming rate requirement. Since the delay is the slowest path from the source, we design a distributed algorithm called FastMesh which seeks to minimize the worst-case delay of the proxies. At the peer level, we propose and study an efficient distributed algorithm called SIM (Scalable Island Multicast) which combines overlay with IP-multicast. Through simulation and PlanetLab experiments, we show that our algorithms substantially outperform traditional and state-of-the-art approaches. At HKUST, we are currently implementing such a proxy-P2P streaming network and I will share our experience on that at the end of the talk.

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H Ringberg FPO
by Melissa Lawson 17 Jun '09

17 Jun '09

Haakon's FPO will be held on Monday June 29. However, the committee will be Jen Rexford, Brian Kernighan, and Larry Peterson (in place of Rob Calderbank). Time will be 10AM in Room 402.

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H Ringberg FPO
by Melissa Lawson 17 Jun '09

17 Jun '09

Haakon Ringberg will present his FPO on Monday June 29 at 10AM in Room 402. The members of his committee are: Jennifer Rexford, advisor; Mike Freedman and Nick Duffield (AT&T), readers; Brian Kernighan and Rob Calderbank, nonreaders. A copy of his thesis, "Privacy-Preserving Collaborative Anomaly Detection", is on display in Room 310. Everyone is invited to attend his talk.

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Talk Wednesday 6/17 - Room 402 - 10:30am
by Ginny Hogan 16 Jun '09

16 Jun '09

Talk: Wednesday 6/17 - Room 402 - 10:30am - Jean-Pierre INRIA: A Research Institute in Information and Communication Science and Technology. This presentation will introduce INRIA, a French Research Institute in Information and Communication Science and Technology. After giving some figures concerning the Institute itself (workforce, organization, ...), we will present its strategy for the next 4 years, its Research orientations and the opportunities this strategy may offer in terms of cooperation, mutual projects, research positions (PhD, Post docs, permanent positions, ...), .... We will also insist on the ambition of INRIA to become a key research Institution in ICST at the EUROPEAN level. INRIA Jean-Pierre

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E Karpilovsky FPO
by Melissa Lawson 08 Jun '09

08 Jun '09

Elliott Karpilovsky will present his FPO on Friday June 12 at 10AM in Room 402. The members of his committee are: Jen Rexford, advisor; Larry Peterson and Aman Shaikh (AT&T), readers; Vivek Pai and Mike Freedman, nonreaders. A copy of his thesis, "Reducing Memory Requirements for Routing Protocols", is on display in Room 310. Everyone is invited to attend his talk.

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C Kim FPO
by Melissa Lawson 04 Jun '09

04 Jun '09

Chang Kim will present his FPO on Tuesday June 9 at 10 AM in Room 402. The members of his committee are: Jennifer Rexford, advisor; Mike Freedman and Albert Greenberg (AT&T), readers; Vivek Pai and Margaret Martonosi, nonreaders. A copy of his thesis, "Scalable and Efficient Self-Configuring Networks", is on display in Room 310. Everyone is invited to attend his talk.

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