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Events for March 05, 2010
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CS Colloq: Manish Bhide, IBM Research (India)
Fri, Mar 05, 2010 @ 10:00 AM - 11:00 AM
Thomas Lord Department of Computer Science
Conferences, Lectures, & Seminars
Talk Title:
Part 1: IBM Research - India Overview
Part 2: Keyword Search over Dynamic Categorized InformationSpeaker: Manish Bhide, IBM Research (India)Abstract:
My talk will be in two parts. In the first part I will give an
overview of IBM Research - India where I will outline the kind of work we do, the job opportunities, internship options, etc. In the second part of the talk I will present one of my research works titled "Keyword Search on Dynamic Categorized Information".
The abstract of the technical talk is given below:
Consider an information repository whose content is categorized. A data item (in the repository) can belong to multiple categories and new data is continuously added to the system. In this talk, I will describe a system, CS*, which takes a keyword query and returns the relevant top-K categories.
In contrast, traditional keyword search returns the top-K documents (i.e., data items) relevant to a user query. The need to dynamically categorize new data and also update the meta-data required for fast responses to user queries poses interesting challenges. The brute force approach of updating the meta-data by comparing each new data item with all the categories is impractical due to (i) the large cost involved in finding the categories associated with a data item and (ii) the high rate of arrival of new data items. We show that a sampling based approach which provides statistical guarantees on the reported results is also impracticable. We hence develop the CS* approach whose effectiveness results from its ability to focus on a strategically chosen subset of categories on the one hand, and a subset of new data on the other. Given a query, CS* finds the top-K categories with high accuracy even in time-constrained situations.Bio:
Manish Bhide is a Research Staff Member at IBM Research - India. He joined IBM Research in 2002 after finishing his masters from IIT Bombay. He is currently pursuing a part time PhD from IIT Bombay (expected completion Dec-2010 ). His research interests are primarily in the area of Information management. At IBM Research he has worked on areas such as XML, policy based data management information management issues in cloud computing, etc.Location: Seaver Science Library (SSL) - 150
Audiences: Everyone Is Invited
Contact: CS Front Desk
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W.V.T. Rusch Engineering Honors Colloquium; The Oceans in a Warming Climate
Fri, Mar 05, 2010 @ 01:00 PM - 01:50 PM
Viterbi School of Engineering Student Affairs
Conferences, Lectures, & Seminars
Josh Willis, Ph.D., Oceanographer from the Jet Propulsion Laboratory will present "The Oceans in a Warming Climate" as part of the W.V.T. Rusch Engineering Honors Program.
Location: Seeley G. Mudd Building (SGM) - 101
Audiences: Undergrad
Contact: Viterbi Admissions & Student Affairs
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Integrated Systems Seminar Series
Fri, Mar 05, 2010 @ 02:00 PM - 03:00 PM
Ming Hsieh Department of Electrical and Computer Engineering
Conferences, Lectures, & Seminars
Speaker: Dr. Namsoo Kim, QualcommTopic: SAW-less Receiver Design Techniques for Wireless Communications
Location: Hughes Aircraft Electrical Engineering Center (EEB) - 248
Audiences: Everyone Is Invited
Contact: Hossein Hashemi
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Embedded Algorithms within an FPGA-based Design ...
Fri, Mar 05, 2010 @ 02:00 PM - 03:00 PM
Sonny Astani Department of Civil and Environmental Engineering
Conferences, Lectures, & Seminars
...to Classify Types of Nonlinear SDOF SystemsSpeakers: Jonathan D. Jones & Jin-Song Pei, University of OklahomaAbstract:
This study investigates the use of a Field-Programmable Gate Array (an FPGA) as a primary processing core for complex nonlinear system identification within a wireless structural health monitoring system. Compared with traditional microprocessor-based systems, FPGA technology offers a more powerful, efficient, and flexible embedded platform. Depending on the application, a more robust and optimized processing core can be created when an FPGA and a microprocessor are used together. This situation requires careful consideration of the algorithms to be embedded and the environments in which they are implemented to yield optimal systems for wireless structural health monitoring where capable yet low-cost products are often preferred.
A series of efforts are made to embed a pattern classifier for three basic types of single-degree-of-freedom systems, i.e., linear, hardening and softening. The classification is achieved by embedding two algorithms – empirical mode decomposition (EMD) and backbone curve technique – within an FPGA and microprocessor platform. An off-the-shelf high-level abstraction tool along with the MATLAB/Simulink environment is utilized to manage the overall design. Numerous design considerations to embed the EMD and backbone curve technique are presented. In particular, the implementation of cubic spline fitting and the encountered challenges using both FPGA hardware and software environments are discussed. Additionally, the backbone curve technique and its complete realization within the FPGA hardware to extract instantaneous characteristics from the uniformly distributed data sets produced by the EMD algorithm are presented.
Given the limited computational resources within a practical embedded system, we strive for a balance between the maximization of computational efficiency and minimization of resource utilization. The beauty of this study lies far beyond merely programming existing algorithms to hardware and software. Among others, extensive and intensive judgment is exercised involving experiences and insights with these algorithms, which renders processed instantaneous characteristics of the signals that are well-suited for wireless transmission.BIOSKETCHES OF SPEAKERS:Mr. Jonathan D. Jones received his B.S. and M.S. degrees in electrical engineering from the University of Oklahoma, Norman, OK, in 2005 and 2009, respectively. He is employed by the United States Air Force at the Oklahoma City Air Logistics Center, Tinker Air Force Base, OK, as a civilian Electronics Engineer. His research interests include field-programmable gate array (FPGA) programming, embedded systems, phased-array radar applications, and nonlinear dynamical systems. Dr. Jin-Song Pei received her B.Eng. and M.Eng. degrees in Structural Engineering from Xi'an Jiaotong University, Xi'an, China and Nanyang Technological University, Singapore, respectively, and a Ph.D. degree in Civil Engineering and Engineering Mechanics from Columbia University, New York, NY. She is an Associate Professor at the School of Civil Engineering and Environmental Science and a graduate faculty member at the School of Electrical and Computer Engineering both at the University of Oklahoma. She was an assistant engineer at the Real Estate Division of Construction & Development Corporation, Xiaman, China, worked as an engineer at Indeco Consultants, Singapore and also practiced at Weidlinger Associates, Inc., Cambridge, MA before joining the faculty at the University of Oklahoma in 2002. Her main research interests are system identification, simulation and control of nonlinear dynamical systems.Location: Kaprielian Hall (KAP) - 209
Audiences: Everyone Is Invited
Contact: Evangeline Reyes
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AIAA Undergraduate Aircraft Design Team
Fri, Mar 05, 2010 @ 03:00 PM - 05:00 PM
Viterbi School of Engineering Student Organizations
Student Activity
Questions? Email aiaa@usc.edu
Location: John Stauffer Science Lecture Hall (SLH) - 102
Audiences: Everyone Is Invited
Contact: -- American Institute of Aeronautics and Astr
