Some old Java code implementing a couple of machine learning algorithms including:
Quick and dirty k-nearest neighbor.
k-means algorithm using MDL for model selection.
Implementation of neural-nets.
Gibbs sampling algorithm to detect motifs in sequences.
Implementation of a Genetic Algorithm solving the 8 queens problem.
Greedy agglomerative clustering with basic graphing.
An experiment with evolutionary neural-nets.
Implementation of Ensemble Selection (shotgun)