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Alexander Gray received Bachelor's degrees in Applied Mathematics and Computer Science from UC Berkeley and a PhD in Computer Science from Carnegie Mellon University, and worked in the Machine Learning Systems Group of NASA's Jet Propulsion Laboratory for 6 years. He currently directs the FASTlab (Fundamental Algorithmic and Statistical Tools Laboratory) at Georgia Tech, consisting of ~20 people including 12 PhD students, which works on the problem of how to perform machine learning/data mining/statistics on massive datasets, and related problems in scientific computing and applied mathematics. Employing a multi-disciplinary array of technical ideas (from discrete algorithms and data structures, computational geometry, computational physics, Monte Carlo methods, convex optimization, linear algebra, distributed computing), the lab has developed the current fastest algorithms for several fundamental statistical methods, and also develops new statistical machine learning methods for difficult aspects of real-world data, such as in astrophysics and biology. This work has enabled high-profile scientific results which have been featured in Science and Nature, and has received a National Science Foundation CAREER award, three best paper awards, and three best paper award nominations. He has given tutorials and invited talks on efficient algorithms for machine learning at venues including ICML, NIPS, SIAM Data Mining, and is a member of the National Academies Committee on the Analysis of Massive Data. He is a frequent invited speaker in the emerging area of astrostatistics/astroinformatics.
Dr. Gray's work focuses on developing the new statistical and computational foundations demanded by next-generation challenges in data analysis:
Algorithmic and statistical foundations of machine learning and scientific computing. Two challenges which keep increasing in importance and ubiquity are challenges of scale: massive datasets and various curses of dimensionality. Development of new general algorithmic strategies for dealing with the fundamental ``inner-loop'' computations at the root of large classes of statistics and machine learning methods, both classical and modern. The work is general enough that it impacts other areas of scientific computing, such as physical simulation and linear algebra. Dr. Gray also develops new statistical or machine learning methods.
Astrostatistics and other challenge applications in science and engineering. I develop statistical and computational solutions directly driven by and validated by hard real problems in domains of critical modern importance -- mainly, in astrophysics and other areas including biochemistry and medicine, particle physics, and internet applications. Our solutions are disseminated via our unique open-source library
Ph.D. CMU Affiliation: Intelligent Systems, College of Computing. Research: Pattern Analysis, Machine Learning, Data Mining, Scientific Computing.