2008-11-14 - changes in MinimizerBarnesHut and MinimizerClassic
- removed restriction that attrExponent must be positive
- another fix of the gravitation
- minor changes in the documentation
2008-11-13 - minor changes in MinimizerBarnesHut and MinimizerClassic
- improved gravitation, such that the same "gravitation factor" (gravFactor) works more consistently across different graphs and energy models; as a consequence, the value of the parameter gravFactor of the constructors may need to be adapted (values from 0.01 to 0.1 should mostly work well).
- minor changes in OptimizerModularity
- removed option to optimize the "normalized cut"
- changed console output to modularity, instead of negative modularity
- added reference to new preprint "Modularity clustering is force-directed layout"
- added example graph Karate.el (Zachary's karate club) and example screenshots
2008-03-21 - minor changes in OptimizerModularity
- fixed bug for modularity clusterings with one cluster
- optional code for randomized contraction (commented out by default)
- replaced example graph 8Clusters.el
2008-01-21 - improved graph viewer
- search for nodes
- labels can be turned on and off
- transparency for improved representation of overlapping nodes
- all node names are listed when pointing at overlapping nodes
2008-01-14 - added clustering by maximizing Newman and Girvan's Modularity measure
- improved layouter classes MinimizerBarnesHut and MinimizerClassic
- simplified interface
- implementation using Java Collections Framework
- replaced float with double
- corrected movement of nodes in MinimizerBarnesHut.OctTree
- added example Food.el
2007-12-21 - improved robustness of MinimizerBarnesHut for layouts with very small or very large distances (which often occur for unconnected graphs)
- added alternative layouter class MinimizerClassic, which is usually slower than MinimizerBarnesHut, but simpler and not limited to three dimensions
- the primary reference for the LinLog energy models is now the journal paper "Energy Models for Graph Clustering"
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