Yangyang Xu

Yangyang Xu Department of Computational and Applied Mathematics Rice University 6100 Main Street MS-134 Houston TX, 77005-1892 Email: yangyang.xu@rice.edu

Bio

Welcome to my homepage! I am currently a graduate student of the department of computational and applied mathematics at Rice University. I work under the supervision of Dr. Wotao Yin, and my research focuses on computational optimization with its theory and algorithm development, and applications in mathine learning and image processing.

I received a bachelor degree from the Dept. of Math at Nanjing University, China, in June 2007. From Sep. 2007 to July 2010, I studied and worked on operations research in AMSS of CAS, China. In July 2010, I got a master degree of management science, and in May 2013, I got my seconde master degree of arts from Rice University.

Publications

• Y. Xu and J. Shi. Regularized bilinear logistic regression. In preparation.

• Y. Xu and W. Yin. A block coordinate descent method for regularized multi-convex optimization with applications to nonnegative tensor factorization and completion. To appear in SIAM Journal on imaging sciences, 2013. [code]

• Y. Xu and W. Yin. A fast patch-dictionary method for whole image recovery. Submitted, 2013. [code pdf]

• M. Lai, Y. Xu and W. Yin. Improved iteratively reweighted least squares for unconstrained smoothed minimization. SIAM Journal on Numerical Analysis, 51(2), pp. 927–957, 2013. [code]

• Y. Xu. Alternating proximal gradient method for sparse nonnegative Tucker decomposition. Submitted, 2013. [code]

• Y. Xu, W. Yin and S. Osher. Learning circulant sensing kernels. Submitted, 2013. [code]

• Q. Ling, Y. Xu, W. Yin and Z. Wen. Distributed low-rank matrix completion. (ICASSP), pp. 2925–2928, 2012.

• Y. Xu and J. Cui. Multitask -Vehicle Exploration Problem: complexity and algorithms. Journal of Systems Science and Complexity, pp. 1080–1092, 2012.

• Y. Xu and J. Cui. A variant of multi-task -vehicle exploration problem: maximizing every processor's average profit. Acta Mathematicae Applicatae Sinica, English Series (Springer), pp. 463–474, 2012.

• Y. Xu, W. Yin, Z. Wen and Y. Zhang. An alternating direction algorithm for matrix completion with nonnegative factors. Journal of Frontiers of Mathematics in China, Special Issues on Computational Mathematics (Springer), pp. 365–384, 2011. [code]

Softwares

• Block-coordinate update (BCU)

  • Nonnegative matrix factorization

  • Nonnegative CP decomposition

  • Nonnegative Tucker decompistion

• Learning circulant kernels

• Matrix completion with nonnegative factors

Invited talks

• Block coordinate descent for multiconvex optimization. 14th International Conference on Approximation Theory. San Antonio, TX, April 7–10, 2013.

• Decentralized low-rank matrix completion. CAAM Graduate Seminar. Houston, TX, Nov. 02, 2012.

• Matrix completion with nonnegative factors. ShangHai JiaoTong University. ShangHai, Aug. 17, 2011.

Professional Services

• Journal Referee

  • SIAM Journal on Optimization

  • SIAM Journal on Scientific Computing

  • Computational Optimization and Applications

  • Journal of Mathematical Imaging and Vision

  • EURASIP Journal on Advances in Signal Processing

  • IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing