Ozgur Sumer


sumer

I have graduated from the Department of  Computer Science at the University of  Chicago with a Ph.D. I defended my thesis "Adaptive Bayesian Inference for Graphical Models" in 2012. In this work, I developed an adaptive inference method for large data sets, that speeds up computations from linear to logarithmic time in the size of the problem after a small modification to the graphical model. My approach is to leverage the previous computations when an application repeatedly solves a variation of the same statistical inference problem. I applied my methods to predict side-chain packing in proteins from 300 to 5,000 amino acids with an average improvement of 6.88 times in computation speed. My method is amenable to parallelism which I applied to improve a widely used approximate inference algorithm where we decompose the problem into simpler inference subproblems that are solved repeatedly with minor change. This work is co-authored by my advisors: Umut Acar , Ramgopal Mettu , and Alexander T. Ihler . My departmental advisor was  László Babai,

Publications

  • Ozgur Sumer, Umut A. Acar, Alexander T. Ihler, Ramgopal Mettu
        Adaptive Exact Inference in Graphical Models
        JMLR Journal of Machine Learning Research Vol. 12, 2011.

  • Ozgur Sumer, Umut A. Acar, Alexander T. Ihler, Ramgopal Mettu
        Fast Parallel and Adaptive Updates for Dual-Decomposition Solvers
        AAAI 25th Conference on Artificial Intelligence (AAAI), 2011.

  • Ozgur Sumer, Umut A. Acar, Alexander T. Ihler, Ramgopal Mettu
        Maintaining MAP Configurations with Applications to Protein Sidechain Packing
        IEEE/SP 15th Workshop on Statistical Signal Processing (SSP), 2009.

  • Ozgur Sumer, Umut A. Acar, Alexander T. Ihler, Ramgopal Mettu
        Adaptive Inference on General Graphical Models
        Uncertainity in Artificial Intelligence (UAI), 2008.

  • Ozgur Sumer, Umut A. Acar, Alexander T. Ihler, Ramgopal Mettu
        Adaptive Bayesian Inference.
        Conference on Neural Information Processing Systems (NIPS), 2007.

  • Ozgur Sumer
        Partial Covering of Hypergraphs.
        Symposium on Discrete Algorithms (SODA), 2005.

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