2008 IAPcourse: Art of guessing results and solving problems without doing a proof or an exact calculation.Techniques include extreme-cases reasoning, dimensional analysis, successive approximation, discretization, generalization, and pictorial analysis

Our new method reduces the computational complexity from O(N3) to O(N) when the dimension of the feature space is far less than the number of genes N, and it successfully reconstructs the low dimensional representation as does the classical MDS.

great mmds talk

http://www.stanford.edu/group/mmds/program.html