Software
HAPS (Hierarchical Affinity Propagation for Segmentation)
Java code of a hierarchical topical segmenter described in the COLING 2014 paper .
The code is available on GitHub here.
APS (Affinity Propagation for Segmentation)
The archive contains the java code and the data, which is why it is large. This is the segmenter described in my EMNLP 2011 paper.