The ICA/BSS algorithms are pure maThematical formulas, powerful, but rather mechanical procedures: There is not very much left for the user to do after the machinery has been optimally implemented. The successful and efficient use of the ICALAB strongly depends on a priori knowledge, common sense and appropriate use of the preprocessing and postprocessing tools. In other words, it is preprocessing of data and postprocessing of models where expertise is truly ne
http://w3eval.calcsharp.net/
W3Eval is Java applet that evaluates maThematical expressions. It uses different approach from conventional calculator, which is more natural to the way people calculate.