California NanoSystems Institute
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Vwani Roychowdhury , Ph.D.

Professor, Electrical Engineering
Member, California NanoSystems Institute

Ph.D., Stanford University, 1989

Honors and Awards:
1999 IEEE Transactions on Neural Networks, Best Paper Award
1993 Purdue University, Ruth and Joel Spira Outstanding Teacher Award
1992 - 1994 General Motors, General Motors Faculty Fellow

Contact Information:
Work Email Address:
Work Address: Office
Boelter Hall, 159410
Los Angeles, CA 90095
Home Page:
Fax Number: (310) 794-1592
Office Phone Number: 310-825-2214
Work Phone Number: 64975, 71954 Office
Research Interests:

Research addresses fundamental issues related to the analysis and design of high-performance computing systems of various kinds. Current and past research activities have addressed open problems in a number of interdisciplinary areas, including parallel computation, efficient combinatorial and adaptive algorithms, artificial neural networks and related nonlinear systems and circuits, VLSI systems and fault tolerant computation. For example, a recent work in nanoelectronic computational units combines solid state physics, materials, and computational principles, and has the potential to spark revolutionary break throughs in nanoelectronics. Other current projects involve investigation of the capabilities and limitations of quantum computation, including quantum error -correcting codes, and quantum algorithms for combinatorial optimization. Research projects on adaptive algorithms using stochastic approximation theory and their applications are also being pursued.

Additional Information:

Vwani P. Roychowdhury received the Ph.D. in electrical engineering from Stanford University in 1989. From 1991 to 1996, he was a faculty member with the School of electrical and Computer Engineering, Purdue University, where he was promoted to Associate Professor in 1995. In 1996, he joined the University of California, Los Angeles, where he is currently a Professor of electrical engineering. He also serves on the faculty of the Biomedical Engineering Interdepartmental Program.

Prof. Roychowdhury's research interests include models of computation, quantum and nanoelectronic computation, quantum information processing, fault-tolerant computation, combinatorics and information theory, advanced statistical processing, and adaptive algorithms. He holds the patent for the methods and apparatus for enhancing gray scale. He has co-authored several books including Discrete Neural Computation: A Theoretical Foundation (Englewood Cliffs, NJ: Prentice-Hall, 1995) and Theoretical Advances in Neural Computation and Learning (Boston, MA: Kluwer, 1994).

Prof. Roychowdhury was a General Motors Faculty Fellow at Purdue University from 1992 until 1994 and was awarded the Ruth and Joel Spira Outstanding Teacher Award in 1994. He received the 1999 Best Paper Award from the IEEE Transactions on Neural Networks for his paper, "On Relative Convergence Properties of Principal Component Analysis Algorithms".

Selected Publications:

Thomas Szkopek, Vwani P. Roychowdhury, Dimitri A. Antoniadis, John N. Damoulakis , Physical Fault Tolerance of Nanoelectronics, Phys. Rev. Lett. 106, 176801, 2011, 106 (17), 176801-1-4.
Rezaei BA, Sarshar N, Roychowdhury VP , Distributed Resource Sharing in Low-Latency Wireless Ad Hoc Networks, IEEE-ACM TRANSACTIONS ON NETWORKING, 2010, 18 (1), 190-201 .
Federico M. Spedalieri, Vwani P. Roychowdhury, Latency in local, two-dimensional, fault-tolerant quantum computing, Quantum Physics, 2009, 9 (7-8), 666-682.
Boscolo Riccardo, Liao James C, Roychowdhury Vwani P, An information theoretic exploratory method for learning patterns of conditional gene coexpression from microarray data, IEEE/ACM transactions on computational biology and bioinformatics / IEEE, ACM, 2008, 5 (1), 15-24.
Kong JS, Sarshar N, Roychowdhury VP, Experience versus talent shapes the structure of the Web, Proc Natl Acad Sci U S A, 2008, 105 (37), 13724-9.
Boscolo Riccardo, Sabatti Chiara, Liao James C, Roychowdhury Vwani P, A generalized framework for network component analysis, IEEE/ACM transactions on computational biology and bioinformatics / IEEE, ACM, 2006, 2 (4), 289-301.
Gao Jianbo, Hu Jing, Tung Wen-Wen, Cao Yinhe, Sarshar N, Roychowdhury Vwani P, Assessment of long-range correlation in time series: how to avoid pitfalls, Physical review. E, Statistical, nonlinear, and soft matter physics, 2006, 73 (1 Pt 2), 016117.
Sarshar Nima, Roychowdhury Vwani, Multiple power-law structures in heterogeneous complex networks, Physical review. E, Statistical, nonlinear, and soft matter physics, 2005, 72 (2 Pt 2), 026114.
Bridgewater Jesse S A, Boykin P Oscar, Roychowdhury Vwani P, Statistical mechanical load balancer for the web, Physical review. E, Statistical, nonlinear, and soft matter physics, 2005, 71 (4 Pt 2), 046133.
Fan, H. Korepin, V. Roychowdhury, V., Entanglement in a valence-bond solid state, Phys Rev Lett, 2004, 93 (22), 227203.
R. Boscolo, H. Pan, and V.P. Roychowdhury, Independent Component Analysis Based on Nonparametric Density Estimation, IEEE Transactions on Neural Networks, 2004, 15 (1), 55-65.
Sarshar, N. Roychowdhury, V., Scale-free and stable structures in complex ad hoc networks, Phys Rev E Stat Nonlin Soft Matter Phys, 2004, 69 (2 Pt 2), 026101.
Kao Katy C, Yang Young-Lyeol, Boscolo Riccardo, Sabatti Chiara, Roychowdhury Vwani, Liao James C, Transcriptome-based determination of multiple transcription regulator activities in Escherichia coli by using network component analysis, Proceedings of the National Academy of Sciences of the United States of America, 2004, 101 (2), 641-6.
J.C. Liao, R. Boscolo, Y.-L. Yang, L.M. Tran, C. Sabbati, and V.P. Roychowdhury, Network Component Analysis: Reconstruction of Regulatory Signals in Biological Systems, Proc. National Academy of Sciences, 2003, 100 (26), 15522-27.
M. Simkin and V.P. Roychowdhury, Read before You Cite!, Complex Systems, 2003, 14, 269-274.
Boykin, P. O. Mor, T. Roychowdhury, V. Vatan, F. Vrijen, R., Algorithmic cooling and scalable NMR quantum computers, Proc Natl Acad Sci U S A, 2002, 99 (6), 3388-93.