Upcoming Events

Date/Time Event
Feb 17, 2016
2:00 pm - 3:30 pm
Inference and Learning with Probabilistic Submodular Models - Abstract: In recent years, submodular optimization has found many new applications, such as in machine learning and data mining. These include active learning, dictionary learning, data summarization, influence maximization and network structure inference. In this talk, I will present our recent work on quantifying uncertainty in submodular optimization. In particular, we carry out the first systematic investigation of inference and learning in probabilistic submodular models (PSMs). These are probabilistic models defined through submodular functions -- log-sub/supermodular distributions -- generalizing regular binary Markov Random Fields and Determinantal Point Processes. They express natural notions such as attractiveness and repulsion and allow to capture richly parameterized, long-range, high-order dependencies among the variables. I will present our recently discovered variational approach towards inference in general PSMs based on sub- and supergradients. Our approximation is exact at the mode (for log-supermodular distributions), and we provide bounds on the approximation quality of the log-partition function with respect to the curvature of the function. Exploiting additive structure in the objective leads to highly scalable, parallelizable message passing algorithms. We empirically demonstrate the accuracy of our inference scheme on several PSMs arising in computer vision and network analysis. I will also discuss some very recent work on learning PSMs from data. Biography: Andreas Krause is an Associate Professor of Computer Science at ETH Zurich, where he leads the Learning & Adaptive Systems Group. Before that, he was an Assistant Professor of Computer Science at Caltech. He received his Ph.D. in Computer Science from Carnegie Mellon University (2008) and his Diplom in Computer Science and Mathematics from the Technical University of Munich, Germany (2004). He is a Microsoft Research Faculty Fellow, received an ERC Starting Investigator grant, an NSF CAREER award as well as best paper awards at several premier conferences and journals. For more information, contact Prof. Mihaela van der Schaar (mihaelaucla@gmail.com)
Location: E-IV Tesla Room #53-125, Los Angeles CA
Feb 19, 2016
All Day
2016 Annual Research Review - Please join us for the 2016 Electrical Engineering Annual Research Review, that will take place on Friday, February 19, 2016.This one day event showcases the department’s research, and includes graduate students presentations, posters, and distinguished plenary lectures.This year the ARR will highlight our research centers, and feature short presentations and discussions on opportunities they offer in forming closer connections and interactions with industry and innovation labs. Registration is free but required in advance.We gratefully acknowledge the support of our sponsors for this event. Christina Fragouli, ARR16 Co-Chair Chee Wei Wong, ARR16 Co-Chair Gregory Pottie, Department Chair   Registration Directions and Parking   “Frontiers of Electrical Engineering” Program at a glance 8:30 am – 9:00 am Breakfast and Registration 9:00 am – 9:15 am Chair Greg Pottie’s Welcome 9:15 am – 9:55 am A Sampling of UCLA Research Centers ERC: Translational Applications for Nanoscale Multiferroic Systems - Greg Carman Center for Engineering Economics, Learning and Networks - Mihaela van der Schaar DARPA STARnet: Function Accelerated nanoMaterial Engineering - Jane Chang CAINS: Center for Autonomous Intelligent Networked Systems - Mario Gerla Center for Excellence for Green Nanotechnologies – Kang Wang CDSC: Center for Domain-Specific Computing - Jason Cong Institute for Technology Advancement - Dwight Streit 9:55 am – 10:10 am Coffee break 10:10 am – 10:45 am A sampling of UCLA Research Centers Nanoelectronics Research Facility (NanoLab) and CNSI - Rob Candler Center for Heterogeneous Integration and Performance Scaling - Subramanian Iyer Center on Development of Emerging Storage Systems - Lara Dolecek and Rick Wesel ScAI: Scalable Analytics Institute - Carlo Zaniolo Center for Public Safety Network Systems - Izhak Rubin Wireless Health Institute - William Kaiser 10:50 am – 12:10 pm Parallel Sessions: 1, 2 and 3 12:10 pm – 2:00 pm Luncheon, Dean Jayathi Murthy’s Welcome and Plenary lecture by Dr. Nambi Seshadri, Broadcom, @ California Room, Faculty Center 2:00 pm – 3:00 pm Parallel Sessions: 4, 5 and 6 3:00 pm – 4:30 pm Poster Session and Coffee @ Engineering 5 Corridors, Fifth and Sixth Floor 4:30 pm – 5:30 pm Parallel Sessions: 7, 8 and 9 5:30 pm – 6:00 pm HKN Company-Student Mixer @ Main Dining Room, Faculty Center 6:00 pm – 7:30 pm Dinner and Plenary Lecture by Prof. Dan M. Goebel, NASA @ Main Dining Room, Faculty Center     Session 1. 5G Wireless and Networks (Maxwell Room, 57-124 Engr IV) [Chair: Prof. Wong] 10:50 am – 11:10 am Biased-Based User Association for Downlink Multi-Antenna Heterogeneous Networks Ghaith Hattab; Advisor: Cabric 11:10 am – 11:30 am Device-to-Device Side-Channel Cooperation for 5G Wireless Networks Can Karakus; Advisor: Diggavi 11:30 am – 11:50 am Parsing the Online Anti-Vaccine Movement: Opinion Dynamics from Incubation to Mainstream Falahi Misagh; Advisor: Roychowdhury 11:50 am – 12:10 pm Integrated Networking and Traffic Regulation for Autonomous Highway Systems Yu-Yu Lin; Advisor: Rubin   Session 2. Machine Learning and Robotics (Shannon Room, 54-134 Engr IV) [Chair: Prof. Mehta] 10:50 am – 11:10 am Deep Learning of Neuromuscular Control for Biomechanical Human Animation Masaki...
Location: UCLA Electrical Engineering, Los Angeles California
Feb 24, 2016
9:00 am - 11:00 am
RF Synthesis without Inductors - Ph.D. Defense Abstract: Recent developments in RF receiver design have eliminated all on-chip inductors except for that used in the local oscillator. This research addresses the “last inductor” problem and proposes both integer-N and fractional-N synthesizer architectures that achieve a phase noise and figure of merit (FOM) comparable to those of LC-VCO-based realizations. The use of ring oscillators instead of LC implementations offers numerous advantages: smaller area, much less coupling to and from other circuits, a much wider tuning range, straightforward generation of multiple phases, and the ability to multiplex several small rings so as to cover multiple bands with minimal area penalty. However, the far inferior FOM of rings has discouraged their use in RF synthesis. The loop bandwidth of traditional type-II PLLs is bounded by “Gardner’s limit” to fREF/10, and typically less than fREF/20 to suppress the reference spurs, thus failing to reduce the ring’s phase noise sufficiently. A new wideband integer-N synthesizer is introduced to sufficiently suppress the ring’s phase noise. It employs an exclusive-OR (XOR) phase detector and a master-slave sampling filter (MSSF) to achieve a lock range of 2-3 GHz, a loop bandwidth equal to one half of the reference frequency, and a locked phase noise of -114 dBc/Hz up to 10-MHz offset with a 3-stage ring oscillator. Realized in 45-nm CMOS technology, the design uses a harmonic trap to suppress reference sidebands to less than -65 dBc while consuming 4 mW. The wideband architecture has been successfully extended to a fractional-N loop as well. A ring-oscillator-based cascaded synthesizer incorporates a digital synchronous delay line and an analog noise trap to suppress the quantization noise of the SD modulator. Realized in 45-nm CMOS technology, the synthesizer exhibits an in-band phase noise of -109 dBc/Hz and an integrated jitter of 1.68 psrms at 2.4 GHz with a power consumption of 6.4 mW. Biography: Long Kong received his B.E. degree in Microelectronics from Shanghai Jiao Tong University, Shanghai, China in 2011, and his M.S. degree in Electrical Engineering from University of California, Los Angeles in 2013. He is currently a Ph.D. candidate in the Department of Electrical Engineering under Professor Behzad Razavi. His research interests include frequency synthesis for wireless/wireline systems and data converters.
Location: E-IV Maxwell Room #57-124, Los Angeles CA
Feb 25, 2016
5:00 pm - 7:00 pm
EE Dept. Sophomores and Undeclareds Welcome Reception - The Electrical Engineering Department would like to invite you to a welcome reception to be held on Thursday, February 25, 2016 from 5 to 7 p.m. in the Tesla Room, EE-IV, Room 53-125. We hope you can join us to hear about the exciting opportunities in the Electrical Engineering Department and have a chance to meet fellow students and professors as well as representatives from IEEE and HKN. (Food and refreshments will be served) Please RSVP with "Welcome Reception" in the subject line to:  tricia@seas.ucla.edu Thank You.
Location: E-IV Tesla Room #53-125, Los Angeles CA