ACO News

Bill Cook becomes founding Editor-In-Chief of Mathematical Programming Computation

Our colleague Bill Cook became the founding Editor-In-Chief of the new journal
Mathematical Programming Computation, published by the Mathematical Programming Society and Springer Verlag.

Mathematical Programming Computation publishes original research articles covering computational issues in mathematical programming. The main novelty of this journal is the inclusion of accompanying software and data with submitted manuscripts. The journal's review process includes the evaluation and testing of the software. Where possible, the review will aim for verification of reported computational results. More on the journal can be found by clicking on the name of the journal.

Congratulations to Bill Cook as he assumes this important leadership position. Previously Bill served as the Editor-in-Chief of Mathematical Programming Series A (2003--2007) and Mathematical Programming Series B (1999--2003).

Arkadi Nemirovski to receive Honorary Doctor of Mathematics Degree

Arkadi Nemirovski, the John Hunter Chair in the H. Milton Stewart School of Industrial and Systems Engineering and ACO Program Faculty Member will be awarded an Honorary Doctor of Mathematics degree from the University of Waterloo at a ceremony on June 12 at 10AM. Arkadi is a leading researcher in continuous optimization, and has achieved the rare distinction of having been awarded all three of what are considered the top scholarly prizes in his field: the D. Ray Fulkerson Prize in 1982, the Dantzig Prize in 1991, and the John von Neumann Theory Prize in 2003.

Luke Postle wins NSF Fellowship, Daniel Dadush honorable mention

Two ACO students fared very well in the very tough competition for NSF Graduate Fellowships during the 2009 funding cycle: Luke Postle was awarded a 2009 Graduate Research Fellowship, and Daniel Dadush received an honorable mention. More information about the fellowships can be found at
www.nsfgrfp.org.

Bill Cook, Ellis Johnson, George Nemhauser and Prasad Tetali named SIAM Fellows

We are pleased that four ACO Program Faculty members were named Class of 2009 SIAM Fellows. Bill Cook was recognized for contributions to the Traveling Salesman Problem and other combinatorial optimization problems, Ellis Johnson for contributions to combinatorial optimization and its application to logistical problems, George Nemhauser for contributions to scheduling methodology and large-scale combinatorial optimization problems, and Prasad Tetali for contributions to discrete mathematics and algorithms.

The membership of the Society for Industrial and Applied Mathematics (SIAM) approved the SIAM Fellows Program in 2008 to designate as Fellows of the Society certain members who have made outstanding contributions to fields served by SIAM. The goals of the SIAM Fellows Program are

More on the program can be found at
fellows.siam.org

Adam Marcus (ACO'08) wins NSF Postdoctoral Fellowship

Adam Marcus (ACO'08), currently Gibbs Assistant Professor at Yale University, was notified that he will receive a
National Science Foundation Mathematical Sciences Postdoctoral Research Fellowship for the next three years. These are among the most prestigious postdoctoral fellowships, with only about 30-35 being awarded annually nationwide. The purpose of these fellowships is to "support future leaders in the mathematical sciences by enabling them to participate in research environments that will have maximal impact on their future scientific development".

Dana Randall to deliver the 2009 Arnold Ross Lecture

College of Computing professor and ACO program faculty member Dana Randall was selected to deliver the
2009 Arnold Ross Lecture at the National Science Center in Augusta, Georgia on Thursday, October 29, 2009. The Ross lectures are organized annually by the American Mathematical Society. Each year a prominent mathematician lectures to talented high school mathematics students. The most recent Ross lecturers were Manjul Bhargava of Princeton University, Barry Mazur of Harvard University and David C. Kelly of Hampshire College.

Prasad Tetali appointed Editor-in-Chief of SIAM J. Discrete Math.

ACO Program Faculty Member and Professor of Mathematics and Computing Prasad Tetali has been appointed Editor-in-Chief of the SIAM Journal on Discrete Mathematics, informally known as SIDMA.

While maintaining very high standards, SIDMA is also very broad, perhaps the broadest among discrete mathematics journals. Prasad's appointment has been announced following the reports of two SIAM committees charged with charting future direction of the Journal. The committees recommended that "in choosing the next Editor-In-Chief for SIDMA, SIAM should search for a researcher whose own work displays the breadth sought for the journal."

Thus it speaks very highly of Prasad's recognition in the Discrete Mathematics community that he was selected to lead the journal for the next term.

Carl Yerger wins student speaker prize at SIAM-SEAS 2008

Second year ACO student Carl Yerger won a student speaker prize at the 32nd Annual SIAM Southeastern-Atlantic Section Conference (SIAM-SEAS 2008) held at the University of Central Florida on March 14 and 15, 2008. Carl was recognized for his presentation on "Six-Critical Graphs on the Klein bottle," based on joint work with fellow ACO students Nathan Chenette, Luke Postle and Noah Streib, and faculty advisor Robin Thomas.

Ricardo Fukasawa (ACO'08) wins IBM Goldstine Fellowship

Ricardo Fukasawa, a fourth-year ACO student, was selected as the sole recipient of the
2008-2009 IBM Herman Goldstine Postdoctoral Fellowship in Mathematical Sciences. Ricardo already accepted a tenure-track position in the Department of Combinatorics and Optimization at the University of Waterloo, and will be taking a leave of absence to take advantage of the Goldstine Fellowship to work in the Mathematical Sciences Department of the IBM Thomas J. Watson Research Center in Yorktown Heights, NY.

The Herman Goldstine Fellowship provides scientists of outstanding ability an opportunity to advance their scholarship as resident members of the Mathematical Sciences Department at the T.J. Watson Research Center in Yorktown Heights, NY. Recipients of this fellowship conduct research in pure and applied mathematics, as well as theoretical and exploratory computer science. Past and present activities of fellowship holders include work on sequential and parallel algorithms, cryptography, numerical analysis, differential equations, logic design, computer music, dynamic systems and approximation theory. The fellowship lasts for one to two years with stipend expected to be between $95,000 and $115,000, depending on the area and length of experience. One fellowship is awarded following a world-wide competition; the only restriction is that candidates must be within five years from their PhD.

All three components of the ACO Program are ranked in the top 10 by the US News and World Report

For the second year in a row, the three components of the ACO Program were ranked in the top 10 by the US News and World Report. ISyE was ranked No. 1, Discrete Mathematics and Combinatorics was ranked No. 7 and Computer Science Theory was ranked No. 9 in the 2009 graduate rankings.

Atish Das Sarma wins Best Paper Award at PODS 2008

Third-year ACO student
Atish Das Sarma has been notified that his paper "Estimating PageRank on Graph Streams", coauthored with Sreenivas Gollapudi and Rina Panigrahy, will be winning the Best Paper Award at the 27th ACM SIGMOD-SIGACT-SIGART Symposium on Principles of Database Systems (PODS 2008) www.sigmod08.org to be held June 9-11, 2008 in Vancouver, Canada.

Adam Marcus (ACO'08) wins the inaugural 2008 SIAM Denes Konig Prize

Adam Marcus, a 4th year ACO student, has just been notified that he will receive the inaugural 2008
SIAM Denes Konig Prize for a junior researcher for outstanding research in an area of discrete mathematics for his two papers: M. Klazar and A. Marcus, Extensions of the linear bound in the Furedi-Hajnal conjecture, Adv. in Appl. Math. 38 (2006), 258-266, and A. Marcus and G. Tardos, Excluded permutation matrices and the Stanley-Wilf conjecture, J. Comb. Theory Ser. A 107 (2004), 153-160. The award will be presented at the SIAM Conference on Discrete Mathematics in Vermont in June.

Bill Cook wins the Lanchester Prize

Bill Cook with coauthors David L. Applegate, Robert E. Bixby and Vasek Chvatal were awarded the
Frederick W. Lanchester Prize of INFORMS at an award ceremony at the annual INFORMS meeting in November 2007. The citation reads: The 2007 Lanchester Prize of INFORMS is awarded to David L. Applegate, Robert E. Bixby, Vasek Chvatal and William J. Cook for their book. The Traveling Salesman Problem: A Computational Study, Princeton University Press, Princeton, New Jersey, 2006.

The traveling salesman problem (TSP) is to find the least expensive way to visit a collection of cities and return to the beginning. This simply stated problem combined with its seeming intractable solution has, over the past century, made the TSP the defining problem for computational optimization and even for computational science in general. While the TSP is now well-known in popular culture as well as in OR/MS, its history, the applications beyond the routing of itinerant vendors, and the variety of solution methodologies had not been assembled until now. Applegate, Bixby, Chvatal and Cook's book The Traveling Salesman Problem: A Computational Study combines the history, the applications and the most advanced methods for solution in a definitive treatment of this definitive problem.

In presenting solution methods, the book describes in clear and instructive terms how to build efficient procedures for the basic optimization mechanisms of linear programming, branch-and-bound, cutting planes, and iterative improvement. The authors then show how to combine these myriad processes into a powerful optimization machine capable of solving to optimality problems with tens of thousands of cities. They also provide challenges for improvements and sources for new directions to the TSP and other large combinatorial problems. To allow future researchers the chance to examine and build on their work directly, the authors have made publicly available their entire computer code.

Besides providing a comprehensive view of all that is involved in solving the TSP, the book's flowing narrative blends the pieces together in a steady progression that captivates the reader. In describing the latest applications, such as gene sequencing, data mining and X-ray crystallography, the book also shows the reach of OR/MS into multiple new domains. In all respects, The Traveling Salesman Problem: A Computational Study represents the best of OR/MS history, present, and future.

Eric Vigoda wins the Fulkerson prize

Eric Vigoda won the 2006 Delbert Ray Fulkerson Prize for his paper titled "A polynomial-time approximation algorithm for the permanent of a matrix with nonnegative entries", co-authored with Mark Jerrum at the University of Edinburgh and Alistair Sinclair at UC Berkeley. The Fulkerson Prize is, along with the Polya prize, one of two most prestigious awards given in the area of Discrete Mathematics. The Fulkerson prize is sponsored jointly by the Mathematical Programming Society and the American Mathematical Society, and is awarded every three years at the International Symposium on Mathematical Programming

The permanent of a matrix is currently a well-studied combinatorial problem with applications in many fields, as it corresponds to the number of perfect matchings of a bipartite graph. For example in physics, computing the permanent is central to the study of the Dimer and Ising Models, although the exact computation of the permanent is intractable. Mathematicians began studying the permanent about two centuries ago, partly because of its superficial similarity to the determinant, which is a much easier problem.

Arkadi Nemirovski delivered a plenary address at the International Congress of Mathematicians, Robin Thomas an invited section talk

Every four years mathematicians from all continents gather at the International Congress of Mathematicians (ICM) to celebrate recent advances in their field, to award the so-called Fields medals ("the Nobel prize of mathematics"), the Nevanlinna prize (same in Computer Science) and the newly-established Gauss Prize (in applied mathematics) and to hear each other report on their recent research. The congress is run by the International Mathematical Union, and is planned years in advance. The program committee selects about twenty mathematicians from all over the world to deliver a plenary address, one that does not run in parallel with any other event so that all delegates to the congress can attend it. Obviously, it is a great honor bestowed upon very few mathematicians to be selected for such presentation.

In addition to the plenary talks the program committee invites about 160 mathematicians to present 45 minute sectional talks. As the name suggests, these run in parallel sections according to specific areas, but are nevertheless supposed to be accessible to a general mathematics audience. An invitation to a sectional talk also represents a significant recognition of a mathematician's standing in the research community.

The most recent ICM took place in Madrid, Spain, in August 2006, with almost 4,000 people in attendance. We are pleased to report that our own Arkadi Nemirovski delivered one of the twenty invited addresses on "Advances in convex optimization: conic programming". In addition to Arkadi's plenary the ACO program was also represented in Section 14, Combinatorics, where Robin Thomas delivered an invited 45 minute talk on Pfaffian orientations of graphs, a subject he has been working on for many years now with several coauthors, including Serguei Norine (ACO'05).

ACO faculty deliver two plenary and one semiplenary lecture at the Mathematical Programming Symposium

The 19th International Symposium on Mathematical Programming was held in Rio de Janeiro, July 30 to August 4, 2006. The ISMP takes place once every three years. The Rio meeting was the second time it has been held outside of North America and Europe. ACO was well represented at the ISMP in Rio. Arkadi Nemirovski and Alex Shapiro delivered plenary lectures (this accounted for two of the total of three plenary lectures given at the meeting), Vijay Vazirani delivered a semi-plenary lecture, and Ellis Johnson was one of three speakers honoring George Dantzig in the meeting's opening session. In addition, Eric Vigoda was honored as one of the Fulkerson Prize winners in the awards ceremony.

Paul Wollan (ACO'05) wins a Humboldt Fellowship

Paul Wollan defended his dissertation entitled
"Extremal functions for graph linkages and rooted minors" in December 2005, and in January 2006 started a one year postdoctoral position in the Department of Combinatorics and Optimization at the University of Waterloo, Canada, working with Bertrand Guenin, winner of the 2003 Fulkerson prize. In many respects the C&O department is a sister institution to our ACO program. Even as a graduate student Paul became interested in matroid theory, more precisely in its structural aspects, a topic he is now pursuing full time with Bertrand at the University of Waterloo. In August 2006, during a short visit to Atlanta, Paul was notified that he was awarded an Alexander von Humboldt Fellowship to work at the University of Hamburg, Germany, with Reinhard Diestel, best known for his authoritative textbook on Graph Theory, also used in the ACO curriculum.

The initial appointment is for one year, and is renewable for another year. It also includes a commitment for life to support shorter visits to Germany in the future, should Paul desire to continue his collaboration with German scientists.

The Humboldt Research Fellowships are awarded to "highly qualified, foreign scientists and scholars of all nationalities and disciplines holding doctorates, aged up to 40, from abroad for a long-term research stay in Germany (up to 600 fellowships per annum)". They are offered world-wide on a competitive basis. The most important criteria for selection are the applicant's international publications to date and the quality and feasibility of the research proposal.



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Last modified: August 20, 2009