Uzi Vishkin

5216 Iribe Center
(301) 405-6763
D.Sc., Technion - Israel Institute of Technology (Computer Science)
Special Awards/Honors: 
ACM Fellow

Uzi Vishkin is a professor of electrical and computer engineering and a member of the Maryland Cybersecurity Center.

His research focuses on parallelism in computing, design and analysis of algorithms, and synergy of algorithms.

He started his work on parallel computing in 1979 as a doctoral student at the Technion - Israel Institute of Technology. Vishkin's initial focus was on parallel algorithms and parallel algorithmic thinking. The 1982 Shiloach-Vishkin work-depth methodology for presenting parallel algorithms provided the presentation framework in several parallel algorithm (known as PRAM algorithms) texts, which also include a considerable number of parallel algorithms he co-authored.

This parallel algorithms theory provided the basis for his invention of the PRAM-On-Chip desktop supercomputer framework that scales beyond 1000 processors on chip. He later led its extensive hardware and software prototyping, including a 64-processor computer that has already been programmed by more than 100 middle school and high school students. He was named a Maryland Innovator of the Year for his PRAM-On-Chip venture, whose main patent has been widely cited in patents of the major vendors.

A follow-up proposal, entitled Center for Reinvention of Computing for Parallelism, ranked first among 49 proposals in a University System of Maryland (USM)-wide competition for Maryland Research Centers of Excellence.

In 1996, he was elected an ACM Fellow for, among other things, having "played a leading role in forming and shaping what thinking in parallel has come to mean in the fundamental theory of Computer Science." He is also an ISI-Thompson Highly Cited Researcher.

Before coming to the University of Maryland, Vishkin was affiliated with Tel Aviv University between and 1984 and 1997, and was chair of its computer science department from 1987 to 1988. Vishkin also worked for IBM T.J. Watson and New York University.

He received his doctorate in computer science from Technion - Israel Institute of Technology in 1981.

Go here to view Vishkin's academic publications on Google Scholar.



Sahinalp SC, Vishkin U.  1994.  On a parallel-algorithms method for string matching problems. Lecture Notes in Computer Science. 778:22-32.

Khuller S, Vishkin U.  1994.  On the parallel complexity of digraph reachability. Information Processing Letters. 52(5):239-241.

Raman R, Vishkin U.  1994.  Optimal randomized parallel algorithms for computing the row maxima of a totally monotone matrix. Proceedings of the fifth annual ACM-SIAM symposium on Discrete algorithms.

Mansour Y, Nisan N, Vishkin U.  1994.  Trade-offs between communication throughput and parallel time. Proceedings of the twenty-sixth annual ACM symposium on Theory of computing.

Landau GM, Vishkin U.  1994.  Pattern matching in a digitized image. Algorithmica. 12(4):375-408.

Goodrich MT, Matias Y, Vishkin U.  1994.  Optimal parallel approximation for prefix sums and integer sorting. Proceedings of the fifth annual ACM-SIAM symposium on Discrete algorithms.

Cole R, Vishkin U.  1994.  On the detection of robust curves. CVGIP: Graphical Models and Image Processing. 56(3):189-204.

Berkman O, Vishkin U.  1994.  Finding level-ancestors in trees. Journal of Computer and System Sciences. 48(2):214-230.


Vishkin U.  1993.  A case for the PRAM as a standard programmer's model. Parallel Architectures and their Efficient Use.

Landau G, Vishkin U.  1993.  Two dimensional pattern matching in a digitized image. Combinatorial Pattern Matching.

Goodrich MT, Matias Y, Vishkin U.  1993.  Approximate parallel prefix computation and its applications. Parallel Processing Symposium, 1993., Proceedings of Seventh International.

Berkman O, Vishkin U.  1993.  On parallel integer merging. Information and Computation. 106(2):266-285.


Vishkin U.  1992.  Biconnectivity Approximations and Graph Carvings. Proceedings of the Twenty-fourth Annual ACM Symposium on the Theory of Computing, Victoria, British Columbia, Canada, May 4-6, 1992.

Vishkin U.  1992.  Methods in parallel algorithmcs. Mathematical Foundations of Computer Science 1992.

Berkman O, Matias Y, Vishkin U.  1992.  Randomized range-maxima in nearly-constant parallel time. Computational Complexity. 2(4):350-373.

Amir A, Landau GM, Vishkin U.  1992.  Efficient pattern matching with scaling. Journal of Algorithms. 13(1):2-32.


Gil J, Matias Y, Vishkin U.  1991.  Towards a theory of nearly constant time parallel algorithms. Foundations of Computer Science, 1991. Proceedings., 32nd Annual Symposium on.

Vishkin U.  1991.  Can parallel algorithms enhance serial implementation? Parallel Processing Symposium, 1994. Proceedings., Eighth International.

Vishkin U.  1991.  Structural parallel algorithmics. Automata, Languages and Programming.

Matias Y, Vishkin U.  1991.  Converting high probability into nearly-constant time—with applications to parallel hashing. Proceedings of the twenty-third annual ACM symposium on Theory of computing.

Matias Y, Vishkin U.  1991.  On parallel hashing and integer sorting. Journal of Algorithms. 12(4):573-606.


Vishkin U.  1990.  Deterministic sampling—a new technique for fast pattern matching. Proceedings of the twenty-second annual ACM symposium on Theory of computing.

Landau GM, Vishkin U, Nussinov R.  1990.  [31] Fast alignment of DNA and protein sequences. Methods in Enzymology. 183:487-502.

Landau GM, Vishkin U, Nussinov R.  1990.  Fast alignment of DNA and protein sequences. Methods in enzymology. 183:487-502.


Landau GM, Vishkin U.  1989.  Fast parallel and serial approximate string matching* 1. Journal of Algorithms. 10(2):157-169.

Cole R, Vishkin U.  1989.  Faster optimal parallel prefix sums and list ranking. Information and Computation. 81(3):334-352.


Apostolico A, Iliopoulos C, Landau GM, Schieber B, Vishkin U.  1988.  Parallel construction of a suffix tree with applications. Algorithmica. 3(1):347-365.

Vishkin U.  1988.  PRAM algorithms: teach and preach. collection of position papers, IBM-NSF Workshop on$\textbackslashbackslash$ Opportunities and Constraints of Parallel Computing", IBM Almaden.

Schieber B, Vishkin U.  1988.  On finding lowest common ancestors: simplification and parallelization. VLSI Algorithms and Architectures.

Ramachandran V, Vishkin U.  1988.  Efficient parallel triconnectivity in logarithmic time. VLSI Algorithms and Architectures.

Megiddo N, Vishkin U.  1988.  On finding a minimum dominating set in a tournament. Theoretical Computer Science. 61(2-3):307-316.

Landau GM, Vishkin U, Nussinov R.  1988.  Locating alignments with k differences for nucleotide and amino acid sequences. Computer applications in the biosciences: CABIOS. 4(1):19-19.

Landau GM, Vishkin U.  1988.  Fast string matching with k differences.. J. COMP. SYST. SCI.. 37(1):63-78.

Landau GM, Vishkin U.  1988.  Fast string matching with k differences* 1,* 2. Journal of Computer and System Sciences. 37(1):63-78.

Eilam-Tzoreff T, Vishkin U.  1988.  Matching patterns in strings subject to multi-linear transformations. Theoretical Computer Science. 60(3):231-254.


Vishkin U.  1987.  An optimal parallel algorithm for selection. Parallel and Distributed Computing. 4:79-86.

Vishkin U.  1987.  Randomized parallel speedups for list ranking* 1. Journal of Parallel and Distributed Computing. 4(3):319-333.


Alon N, Azar Y, Vishkin U.  1986.  Tight complexity bounds for parallel comparison sorting. 27th Annual Symposium on Foundations of Computer Science.

Maon Y, Schieber B, Vishkin U.  1986.  Parallel ear decomposition search (EDS) and st-numbering in graphs. Theoretical Computer Science. 47:277-298.

Landau GM, Vishkin U.  1986.  Efficient Parallel and Serial String Matching. Computer Science Department Technical Report. 221

Landau GM, Vishkin U.  1986.  Efficient string matching with k mismatches. Theoretical Computer Science. 43:239-249.

Landau GM, Vishkin U.  1986.  Introducing efficient parallelism into approximate string matching and a new serial algorithm. Proceedings of the eighteenth annual ACM symposium on Theory of computing.

Cole R, Vishkin U.  1986.  Approximate and exact parallel scheduling with applications to list, tree and graph problems. 27th Annual Symposium on Foundations of Computer Science.

Cole R, Vishkin U.  1986.  Approximate scheduling, exact scheduling, and applications to parallel algorithms. Proceedings Symposium on Foundations of Computer Science.

Cole R, Vishkin U.  1986.  Deterministic coin tossing and accelerating cascades: micro and macro techniques for designing parallel algorithms. Proceedings of the eighteenth annual ACM symposium on Theory of computing.


Vishkin U.  1985.  On efficient parallel strong orientation. Information Processing Letters. 20(5):235-240.

Vishkin U.  1985.  Optimal parallel pattern matching in strings. Information and Control. 67(1-3):91-113.

Tarjan RE, Vishkin U.  1985.  An efficient parallel biconnectivity algorithm. SIAM Journal on Computing. 14:862-862.

Perl Y, Vishkin U.  1985.  Efficient implementation of a shifting algorithm. Discrete applied mathematics. 12(1):71-80.

Landau GM, Vishkin U.  1985.  Efficient string matching in the presence of errors. Foundations of Computer Science, 1985., 26th Annual Symposium on.

Coppersmith D, Vishkin U.  1985.  Solving NP-hard problems in [] almost trees': Vertex cover. Discrete applied mathematics. 10(1):27-45.

Bar-On I, Vishkin U.  1985.  Optimal parallel generation of a computation tree form. ACM Transactions on Programming Languages and Systems (TOPLAS). 7(2):348-357.


Vishkin U.  1984.  An optimal parallel connectivity algorithm* 1. Discrete applied mathematics. 9(2):197-207.

Vishkin U.  1984.  Randomized speed-ups in parallel computation. Proceedings of the sixteenth annual ACM symposium on Theory of computing.