'Np hardness' diaporamas de présentation

715 views • 71 slides

Lattice Salad

Lattice Salad. S.Safra I.Dinur G.Kindler. Lattice Problems. Definition: Given a basis v 1 ,..,v n ? R n , The lattice L=L(v 1 ,..,v k ) = { ? a i v i | integers a i } SVP: Find the shortest non-zero vector in L . CVP: Given a vector y ? R n , find a v ? L closest to y. y.

560 views • 37 slides

CSC 3130: Automata theory and formal languages

Fall 2009. The Chinese University of Hong Kong. CSC 3130: Automata theory and formal languages. NP-complete problems. Andrej Bogdanov http://www.cse.cuhk.edu.hk/~andrejb/csc3130. Polynomial-time reductions.

357 views • 35 slides

2-Layer Crossing Minimisation

2-Layer Crossing Minimisation. Johan van Rooij. Overview. Problem definitions NP-Hardness proof Heuristics & Performance Practical Computation One layer: ILP, Branch & Cut Two layer: local search. Crossing Number.

470 views • 30 slides

Introduction to the Theory of Computation

Introduction to the Theory of Computation. Qiuyue Wang qiuyuew@yahoo.com qiuyuew@ruc.edu.cn. Goals. What are the fundamental capabilities and limitations of computers? What is a computer? What can and can not be computed? How quickly can a problem be computed?. Computational Models.

435 views • 27 slides

Analytical Approach to Parallel Repetition

Analytical Approach to Parallel Repetition. Irit Dinur. David Steurer. Weizmann Institute. Cornell University. Banff, July 2013. constraint graph. bipartite -regular (for simplicity). random:. game. no communication between A & B. Bob. Alice. strategy. strategy. win:.

398 views • 27 slides

Sep 16, 2013

Computational social choice The easy-to-compute axiom. Lirong Xia. Sep 16, 2013. Topics for paper presentation is available online. On average one student one paper group of two: two times group of three: three times You need to prepare the slides

361 views • 23 slides

The Computational Complexity of Ideal Semantics I Abstract Argumentation Frameworks

Paul E. Dunne Dept. Of Computer Science Univ. Of Liverpool ped@csc.liv.ac.uk. The Computational Complexity of Ideal Semantics I Abstract Argumentation Frameworks. Overview. Argumentation Frameworks (brief review). Collections of “justified arguments” – extension based semantics.

338 views • 20 slides