TILOS Seminar: MCMC vs. Variational Inference for Credible Learning and Decision Making at Scale

Virtual

Yian Ma, Assistant Professor, UC San Diego Abstract: Professor Ma will introduce some recent progress towards understanding the scalability of Markov chain Monte Carlo (MCMC) methods and their comparative advantage with respect to variational inference. Further, he will discuss an optimization perspective on the infinite dimensional probability space, where MCMC leverages stochastic sample paths while variational […]

TILOS Seminar: The Connections Between Discrete Geometric Mechanics, Information Geometry, Accelerated Optimization and Machine Learning

Virtual

Melvin Leok, Department of Mathematics, UC San Diego Abstract: Geometric mechanics describes Lagrangian and Hamiltonian mechanics geometrically, and information geometry formulates statistical estimation, inference, and machine learning in terms of geometry. A divergence function is an asymmetric distance between two probability densities that induces differential geometric structures and yields efficient machine learning algorithms that minimize […]

TILOS Seminar: Learning in the Presence of Distribution Shifts: How does the Geometry of Perturbations Play a Role?

Virtual

Hamed Hassani, Assistant Professor, University of Pennsylvania Abstract: In this talk, we will focus on the emerging field of (adversarially) robust machine learning. The talk will be self-contained and no particular background on robust learning will be needed. Recent progress in this field has been accelerated by the observation that despite unprecedented performance on clean […]

TILOS Seminar: Deep Generative Models and Inverse Problems

Virtual

Alexandros G. Dimakis, Professor, The University of Texas at Austin Abstract: Sparsity has given us MP3, JPEG, MPEG, Faster MRI and many fun mathematical problems. Deep generative models like GANs, VAEs, invertible flows and Score-based models are modern data-driven generalizations of sparse structure. We will start by presenting the CSGM framework by Bora et al. […]

TILOS Seminar: Reasoning Numerically

Virtual

Sicun Gao, Assistant Professor, UC San Diego Abstract: Highly-nonlinear continuous functions have become a pervasive model of computation. Despite newsworthy progress, the practical success of “intelligent” computing is still restricted by our ability to answer questions regarding their quality and dependability: How do we rigorously know that a system will do exactly what we want it […]

TILOS Seminar: The FPGA Physical Design Flow Through the Eyes of ML

Virtual

Dr. Ismail Bustany, Fellow at AMD Abstract: The FPGA physical design (PD) flow has innate features that differentiate it from its sibling, the ASIC PD flow. FPGA device families service a wide range of applications, have much longer lifespans in production use, and bring templatized logic layout and routing interconnect fabrics whose characteristics are captured by […]

TILOS Seminar: How to use Machine Learning for Combinatorial Optimization? Research Directions and Case Studies

Virtual

Sherief Reda, Professor, Brown University and Principal Research Scientist at Amazon Abstract: Combinatorial optimization methods are routinely used in many scientific fields to identify optimal solutions among a large but finite set of possible solutions for problems of interests. Given the recent success of machine learning techniques in classification of natural signals (e.g., voice, image, […]

TILOS Seminar: Machine Learning for Design Methodology and EDA Optimization

Virtual

Haoxing Ren, NVIDIA Abstract: In this talk, I will first illustrate how ML helps improve design quality as well as design productivity from design methodology perspective with examples in digital and analog designs. Then I will discuss the potential of applying ML to solve challenging EDA optimization problems, focusing on three promising ML techniques: reinforcement learning […]

TILOS Seminar: Non-convex Optimization for Linear Quadratic Gaussian (LQG) Control

Virtual

Yang Zheng, Assistant Professor, UC San Diego Abstract: Recent studies have started to apply machine learning techniques to the control of unknown dynamical systems. They have achieved impressive empirical results. However, the convergence behavior, statistical properties, and robustness performance of these approaches are often poorly understood due to the non-convex nature of the underlying control problems. […]

TILOS Seminar: On Policy Optimization Methods for Control

Virtual

Maryam Fazel, Professor, University of Washington Abstract: Policy Optimization methods enjoy wide practical use in reinforcement learning (RL) for applications ranging from robotic manipulation to game-playing, partly because they are easy to implement and allow for richly parameterized policies. Yet their theoretical properties, from optimality to statistical complexity, are still not fully understood. To help […]