Arbitrary costs - PowerPoint PPT Presentation

A survey on approximating graph spanners Guy Kortsarz, Rutgers Camden

A survey on approximating graph spanners Guy Kortsarz, Rutgers Camden. Spanners: definition for unweighted undirected graphs. Peleg and Upfal. Input: An undirected graph G(V,E) and an integer k Required: a subgraph G’ so that for every u and v  V : Dist G’ (u,v)/Dist G (u,v)≤ k.

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Optimal Depth-First Strategies for And-Or Trees Russell Greiner * , Ryan Hayward and Michael Molloy

Yummy. i#1. Sweet. i#2. Milk. Fruit. Cereal. +. M. +. Yummy. S. +. +.  nl. -. C.  smcf. i#1. Sweet p=0.3 c=1. S. C. +. +. +. S. M. i#2. F. Milk p=0.8 c=1. M. cost success probability. F. -. Fruit p=0.2 c=1. Cereal p=0.7 c=1. -. -. -.

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