Speaker: Lei Li, University of California, Berkeley
Location: Warren Weaver Hall 1302
Date: April 4, 2014, 11:30 a.m.
Host: David Sontag
Time series data arise in numerous applications, such as data center monitoring, tracking web user activities, health care, etc. Detecting patterns and learning features in collections of data sequences are crucial to solve real-world, domain specific problems, for example, to track moving objects in videos, to spot nefarious online activities, and to forecast patients' health states.
In this talk, I define a new tensor dynamical model for multivariate data as well as an efficient algorithm for learning such models from data. In addition, I will present an efficient approach to jointly estimate parameters and latent states for a large class of models including nonlinear dynamical systems. Finally, I will present my work on efficient inference for a probabilistic declarative programming language, which aims to democratize machine learning and to enable practitioners to solve their domain specific problems.
Lei Li is a Post-Doctoral researcher at EECS department of UC Berkeley. His research interest lies in the intersection of machine learning, statistical inference and database systems. Specifically, he has been working on Bayesian inference in open universe probabilistic models, probabilistic programming language, large-scale learning, time series, communication and social networks. He has served in the Program Committee for ICML 2014, SDM 2013/2014, and IJCAI 2011/2013. He has been invited as reviewer for TOMCCAP, DAMI, TKDE, TOSN, Neurocomputing, KDD, SIGMOD, VLDB, PKDD and WWW. He has been invited to review NSF proposal in 2010 and to DARPA's Information Science and Technology (ISAT) probabilistic programming workshop in 2013.
Lei received his B.S. in Computer Science and Engineering from Shanghai Jiao Tong University in 2006 and Ph.D. in Computer Science from Carnegie Mellon University in 2011, respectively. His dissertation work on fast algorithms for mining co-evolving time series was awarded ACM KDD best dissertation (runner up).
Refreshments will be offered starting 15 minutes prior to the scheduled start of the talk.