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Colloquium - Gabow

Splitting and Searching
Department of Computer Science

The splitting operation for graphs is a simple yet powerful device. It is useful for proving theorems on graphs and designing efficient algorithms. Splitting was developed starting in the 1970's in Europe; it has recently begun to attract more attention. This talk surveys several representative applications of splitting: graph orientation, packing arborescences and multicommodity flow. We discuss theorems proved by splitting, and efficient algorithms based on the proofs.

One of our splitting algorithms involves a computation that can be done using n binary searches. We show how to reduce this to 1 binary search. We'll explain the method in detail, since it's quite simple. Surprisingly this binary search algorithm does not seem to have been previously known.

Refreshments will be served immediately before the talk at 3:30pm.

Department of Computer Science
University of Colorado Boulder
Boulder, CO 80309-0430 USA
May 5, 2012 (14:13)