SUNMONTUEWEDTHUFRISAT
Events for March 23, 2015
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Information, Inference, and Privacy
Mon, Mar 23, 2015 @ 11:00 AM - 12:00 PM
Ming Hsieh Department of Electrical and Computer Engineering
Conferences, Lectures, & Seminars
Speaker: Flavio du Pin Calmon, MIT
Talk Title: Information, Inference, and Privacy
Abstract: Widespread collection of data has led to new and challenging privacy and security risks. There is a need to engineer mechanisms that allow users to selectively disclose their data to a third party in order to achieve a utility goal (e.g. receive high quality product recommendations), while restricting the release of private information (e.g. not revealing a given medical condition). In this talk, we use tools from information theory, statistics and estimation theory to characterize the fundamental limits of estimation when only partial statistics of the data are known. We then apply the insight gained by characterizing these limits to quantify the fundamental privacy-utility tradeoff and to design privacy-assuring mechanisms.
In addition, we introduce security metrics and associated results based on the spectrum of the conditional expectation operator, called the principal inertia components. The principal inertia components allow a fine-grained decomposition of the dependence between a hidden and an observed variable which, in turn, is useful for deriving fundamental bounds for estimation problems, and for measuring information leakage in secure communication models. Finally, we illustrate how our results can be used as a design driver for applications in security, noisy computation and distributed systems.
Biography: Flavio du Pin Calmon is a PhD candidate in Electrical Engineering and Computer Science (with a minor in Mathematics) at MIT, and a member of the Network Coding and Reliable Communications Group at the Research Laboratory of Electronics (RLE). His research interests include information theory, statistics, estimation theory, security and privacy. In addition to his work at MIT, Flavio has ongoing collaborations with the MIT Lincoln Laboratory, Technicolor SA and NetApp. Before coming to MIT, he received an M.Sc. in Electrical Engineering from the Universidade Estadual de Campinas, Brazil, and a B.Sc. in Communications Engineering from the Universidade de Brasilia, Brazil.
Host: Andreas Molisch
Location: Hughes Aircraft Electrical Engineering Center (EEB) - 248
Audiences: Everyone Is Invited
Contact: Gerrielyn Ramos
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EE-Electrophysics
Mon, Mar 23, 2015 @ 02:00 PM - 03:30 PM
Ming Hsieh Department of Electrical and Computer Engineering
Conferences, Lectures, & Seminars
Speaker: Jesse Maassen, Purdue University
Talk Title: Heat transport on the nanoscale: lessons from electron transport
Abstract: Electronics has shaped our modern world. The downscaling of device dimensions that made this possible not only presented enormous technological challenges, it also raised many fundamental questions. Over the past two decades a deep understanding of electronic transport at the nanoscale has been developed, along with the computational tools that accurately capture the relevant physics. However, electron transport cannot be separated from phonon transport. Self-heating in nanoscale devices critically limits their performance, and coupled electron-phonon transport in nanostructures provides a route to increase the performance of thermoelectric energy conversion. Further progress in electronics will require a deeper understanding of thermal transport at the nanoscale along with the development of new computational tools that address challenges from the nano- to macro-scale. I have begun to tackle these issues in a unique way - by unifying the concepts and techniques for electron and phonon transport.
In this talk I will discuss our recent findings on nanoscale heat transport
- highlighting the similarities of electron and phonon transport. Work on the fundamental limits of thermal interface resistance and transport in 2D materials will be presented. In addition, I will describe a new approach to treat heat transport on all length and time scales. This technique is not only simple, computationally efficient and able to reproduce results of detailed modeling with high accuracy, but is also physically transparent thus providing new fundamental (and still controversial!) insights such as the fact that Fourier's Law often works very well at the nanoscale. Results of this method combined with detailed first principles modeling of nanomaterials will be presented.
We envision using this framework to analyze recent unresolved experiments, to help understand the results of detailed simulations, and to explore coupled electro-thermal transport in a variety nanoscale materials and devices.
Biography: Jesse Maassen received B.Eng. and M.A.Sc. degrees in engineering physics from the Ecole Polytechnique de Montreal in 2006. He obtained a Ph.D. in physics from McGill University in 2011 by working on first principles simulations of nanoelectronic devices. Since 2012 Dr. Maassen has been a postdoctoral research associate at Purdue University working with Prof.
Mark Lundstrom. His research interests focus on exploring novel materials and devices, using predictive first principles modeling, with an emphasis on electro-thermal transport.
Jesse Maassen was awarded a Alexander Graham Bell Canada Graduate Scholarship from the National Sciences and Engineering Research Council
(NSERC) of Canada, as well as a Postdoctoral Fellowship from NSERC. He won best doctoral thesis from McGill Physics Department in 2011, and received the Keren Prize for best theoretical work at the Trends in Nanotechnology conference.
Host: EE-Electrophysics
Location: Hughes Aircraft Electrical Engineering Center (EEB) - 132
Audiences: Everyone Is Invited
Contact: Marilyn Poplawski
