lbehnke/hierarchical-clustering-java — pull request #5 by taer (2014-08-26 16:45:58+00:00)
Title: Performance updates

Ran into some performance issues when running with a large dataset. In this case, we had about 2055 zip codes for Texas. It was spending a majority of the time in distanceMap.remove() method iterating over the array.

Now it completes in about 35 seconds while the arraylist version took 1482