Maximum Parsimony is known to be NP-complete and thus cannot really be used for a number of taxa larger than, say, 1000. Since the beginning of astrocladistics I was concerned by this problem, and it took us several years to find a solution. Indeed, we must cluster the data first, that is make a similarity […]

Biologists have been confronted, right at the beginning (2000 years ago or so) , to the diversity of the living organisms on Earth. They had to do statistics and classification (systematics). Thanks to the progress of technology, they are now able to investigate the very detailed functioning of cells and molecules, asking physicists and chemists […]