'Np hard' diaporamas de présentation

Phylogeny Estimation: Why It Is "Hard", and How to Design Methods with Good Performance

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R u s s i a

Alexander Kononov Sobolev Institute of Mathematics Siberian Branch of Russian Academy of Science Novosibirsk, Russia. R u s s i a. Novosibirsk. How to design a PTAS. adapted from the novel by P. Schuurman and G. Woeginger directed by Alexander Kononov. Garry Potter problem.

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UMass Lowell Computer Science 91.503 Analysis of Algorithms Prof. Karen Daniels Spring, 2009

UMass Lowell Computer Science 91.503 Analysis of Algorithms Prof. Karen Daniels Spring, 2009. Lecture 6 Tuesday, 3/24/09 NP-Completeness . Overview. Graham Videotape Review: Reduction to Establish Lower Bounds Basics Practicing Some Reductions How to Treat NP- Hard or Complete Problems.

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NP Completeness

NP Completeness. Deterministic algorithms. An algorithm is deterministic if the sequence of steps taken to solve a given problem by an algorithm is pre-determined and linearly ordered The Turing machine we described is deterministic:

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CS151 Complexity Theory

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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.

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CIPRES: Enabling Tree of Life Projects

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Polynomial-time approximation schemes for NP-hard geometric problems

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Some algorithmic background

Some algorithmic background. Biology 162 Computational Genetics Todd Vision Fall 2004 26 Aug 2004. Some algorithmic background. Algorithms Analysis of time and memory requirements NP completeness Graphs Travelling salesman problem DNA computers Strings and Sequences Recursion.

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Neural Wiring Optimization Paradigm

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CPS 296.1 Auctions & Combinatorial Auctions

CPS 296.1 Auctions & Combinatorial Auctions. Vincent Conitzer conitzer@cs.duke.edu. A few different 1-item auction mechanisms. English auction: Each bid must be higher than previous bid Last bidder wins, pays last bid Japanese auction:

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CPS 590.4 Auctions & Combinatorial Auctions

CPS 590.4 Auctions & Combinatorial Auctions. Vincent Conitzer conitzer@cs.duke.edu. A few different 1-item auction mechanisms. English auction: Each bid must be higher than previous bid Last bidder wins, pays last bid Japanese auction:

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Polynomial Church-Turing thesis

Polynomial Church-Turing thesis. A decision problem can be solved in polynomial time by using a reasonable sequential model of computation if and only if it can be solved in polynomial time by a Turing machine. The complexity class P.

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Slides by Asaf Shapira & Michael Lewin & Boaz Klartag & Oded Schwartz.

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10/09/2014

FlowMap: An Optimal Technology Mapping Algorithm for Delay Optimisation in Lookup-Table Based FPGA Designs. Presented by Qiwei Jin. 10/09/2014. Overview. The paper and the authors. Some background information. The algorithm in detail. Results and Conclusion. Questions for discussion.

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Lecture 8 Overview

Lecture 8 Overview. Analysis of Algorithms. Algorithms Time Complexity Space Complexity An algorithm whose time complexity is bounded by a polynomial is called a polynomial-time algorithm. An algorithm is considered to be efficient if it runs in polynomial time. Time and Space.

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ANT COLONY OPTIMIZATION

ANT COLONY OPTIMIZATION. By, Name: Suraj Padhy Roll: S/07/73 Regd.: 0701204232 Branch: CSE. Introduction.

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Complexity of Approximation

Complexity of Approximation. PCP Theory and Its Relation to Approximability. PCP (Probabilistically Checkable Proofs). An Extension of NP which has poly-time checkable proofs. A problem ?? is in NP if its membership can be proved as follows: -- The prover sends a proof of size p(n) to

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CPS 590.4

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