biclustering

Useful for biological systems, as it can identify modules of cells/genes/whatever

cMonkey is one promising algorithm
cmonkey

at ISMB, someone presented on
multi-species c-monkey
pmed link
Abstract:

We describe an algorithm, multi-species cMonkey, for the simultaneous biclustering of heterogeneous multiple-species data collections and apply the algorithm to a group of bacteria containing Bacillus subtilis, Bacillus anthracis, and Listeria monocytogenes. The algorithm reveals evolutionary insights into the surprisingly high degree of conservation of regulatory modules across these three species and allows data and insights from well-studied organisms to complement the analysis of related but less well studied organisms.