'Bipartite graphs' diaporamas de présentation

The Use of Semidefinite Programming in Approximation Algorithms

The Use of Semidefinite Programming in Approximation Algorithms. Uriel Feige The Weizmann Institute. Combinatorial Optimization. A combinatorial optimization problem. Example: max-cut . Input. A graph . Feasible solution. A set S of vertices . Value of solution. Number of edges cut .

1.29k views • 95 slides

Discovering Treewidth

Hans L. Bodlaender, Utrecht University. Discovering Treewidth. This talk. Introduction Definition of treewidth: a graph parameter Applications Determining the treewidth of a graph: Exact algorithms Upper bounds Lower bounds Pre-processing. Theory and experimental results.

1.22k views • 91 slides

The Traveling Salesman Problem in Theory & Practice

1.02k views • 85 slides

RTG: A Recursive Realistic Graph Generator using Random Typing

RTG: A Recursive Realistic Graph Generator using Random Typing. Leman Akoglu and Christos Faloutsos Carnegie Mellon University. Outline. Motivation Problem Definition Related Work A Little History Proposed Model Experimental Results Conclusion. Motivation - 1.

635 views • 63 slides

Part 10. Graphs

Part 10. Graphs. CS 200 Algorithms and Data Structures. Outline. Introduction Terminology Shortest Paths Implementing Graphs Graph Traversals Topological Sorting Spanning Trees Minimum Spanning Trees Circuits. Graphs. What can this represent? A computer network

813 views • 61 slides

A survey of some results on the Firefighter Problem

A survey of some results on the Firefighter Problem. Wow! I need reinforcements!. Kah Loon Ng DIMACS. A simple model. A simple model. A simple model. A simple model. A simple model. A simple model. A simple model. A simple model.

964 views • 60 slides

Hamiltonian Cycles in Triangular Grids

630 views • 45 slides

Accelerating Simulated Annealing for the Permanent and Combinatorial Counting Problems

573 views • 45 slides

Typhoon: An Ultra-Available Archive and Backup System Utilizing Linear-Time Erasure Codes

Typhoon: An Ultra-Available Archive and Backup System Utilizing Linear-Time Erasure Codes. Typhoon: An Ultra-Available Archive and Backup System Utilizing Linear-Time Erasure Codes. Part of OceanStore. POOL. POOL. OceanStore. Cache. Naming/Location. Client. Erasure Codes.

538 views • 42 slides

Bipartite Graphs

Bipartite Graphs. What is a bipartite graph? Properties of bipartite graphs Matching and maximum matching - alternative paths - augmenting paths Hopcroft-Karp algorithm. Bipartite Graph.

1.17k views • 40 slides

M-alternating Hamilton paths and M-alternating Hamilton cycles

M-alternating Hamilton paths and M-alternating Hamilton cycles. ??? ?????????? ????????????????. Note. The material presented here is based on the submitted paper: Li, Lou & Zhang. M-alternating Hamilton paths and M-alternating Hamilton cycles. Outline. Definition & introduction

570 views • 38 slides

Hypergraphs

834 views • 35 slides

Single source u nweighted path lengths

Single source u nweighted path lengths. Outline. This topic looks at another problem solved by breadth-first traversals Determining if a graph is bipartite Definition of a bipartite graph The algorithm An example. Definition. Definition

402 views • 29 slides

Tree Spanners for Bipartite Graphs and Probe Interval Graphs

571 views • 25 slides

9.2 Graph Terminology and Special Types Graphs

9.2 Graph Terminology and Special Types Graphs. Basic Terminology Definition 1: Two vertices u and v in an undirected graph G are called adjacent (or neighbors ) in G if u and v are endpoints of an edge of G .

1.34k views • 24 slides

Optimal Space Lower Bounds for All Frequency Moments

292 views • 22 slides

Introduction to Approximation Algorithms

Introduction to Approximation Algorithms. Lecture 12: Mar 1. NP-completeness. We have seen many polynomial time solvable optimization problems. e.g. maximum matching, min-cost flow, minimum cut, etc. .

434 views • 21 slides

A different view of independent sets in bipartite graphs

270 views • 18 slides

Dynamic Matchings in Convex Bipartite Graphs

338 views • 17 slides

Level of Repair Analysis and Minimum Cost Homomorphisms of Graphs

Gregory Gutin Department of Computer Science Joint work with A. Rafiey, A. Yeo (RHUL) and M. Tso (Man. U.) www.cs.rhul.ac.uk/home/gutin/. Level of Repair Analysis and Minimum Cost Homomorphisms of Graphs. LORA. Level of Repair Analysis (LORA): procedure for defence logistics

455 views • 11 slides