Where the Really Hard Problems Aren't

Papers

Here is our paper Where the Really Hard Problems Aren't.

Here is Cheeseman et al.'s paper on instance hardness..

Here is Little et al.'s paper on branch and bound for TSP..

Here is a refurbished version of Little et al.'s paper on branch and bound for TSP..

Interactive Results

Here are some interactively viewable results.

Resources

Here is the source code for our implementation of Little's algorithm.

Here are the randomly generated source matrices used in our replicative experiment.

A Different Mean

If you increase the mean, the phase transition occurs at a higher sigma.