To Φοιτητικό Παράρτημα της ΙΕΕΕ του ΕΜΠ σας προσκαλεί
στην ομιλία του
Assistant Professor Constantinos Daskalakis
Department of Computer Science, Massachusetts Institute of Technology
The Complexity of the Nash Equilibrium
Παρασκευή 17 Ιουλίου 2009, 14:30 Αμφιθέατρο Πολυμέσων -
Ισόγειο Κεντρικής Βιβλιοθήκης ΕΜΠ
Περίληψη ομιλίας:
The Nash equilibrium aspires to model the behavior of rational individuals
in situations of conflict. But how plausible would it be, if there were no
efficient dynamics by which the game play could converge to such an
equilibrium? Motivated by this question we study the computational
complexity of the Nash equilibrium. We show that finding a Nash equilibrium
is an intractable problem, making it unlikely that there are efficient
dynamics for it. Since by Nash’s theorem an equilibrium is guaranteed to
exist, the Nash equilibrium belongs to the class of problems in NP which
always have a solution, and previous work establishes that such problems are
unlikely to be NP-complete. We show instead that the problem is as hard as
any fixed-point computation problem in a precise technical sense, giving
rise to a new complexity landscape inside the class NP. We will assume no
background in game theory, or topology. A little background in computational
complexity may be helpful.
Σύντομο Βιογραφικό:
Constantinos (or Costis) Daskalakis grew up in Athens, Greece, where he
received an undergraduate degree in Electrical and Computer Engineering from
the National Technical University of Athens. In 2004 he moved to UC
Berkeley, California, where he pursued doctorate studies in Computer Science
under the supervision of Professor Christos Papadimitriou. In 2008 he moved
to Boston, Massachusetts, to spend a year as a postdoctoral researcher at
Microsoft Research, New England, and in Summer 2009, he joined the faculty
at MIT as an Assistant Professor of Computer Science.
Costis was awarded
the 2008 ACM Doctoral Dissertation award. He was also awarded, together with
Paul Goldberg and Christos Papadimitriou, the first Game Theory and Computer
Science Prize by the Game Theory Society. He was the recipient of a
Microsoft Research Fellowship in honor of Dean Richard Newton, a UC Regents
Fellowship, and a best student paper award at the ACM conference on
Electronic Commerce.
Πληροφορίες: ΙΕΕΕ NTUA Student Branch, http://ieee.ntua.gr,
ieeesb(a)cslab.ece.ntua.gr
