Datalystica is the sole official seller and distributer of the multi-linear engine (ME-2), which was developped, written and compiled by Pentti Paatero. The ME-2 solver is the solver which performs the PMF calculation and is therefore required for running SoFi (SoFi Pro, SoFi RT).
The ME-2 solver can be used independently, but we strongly recommend the purchase of SoFi Pro with it. SoFi Pro offers a myriad of features that will make your life much easier. Not sure yet? Check out our list of advantages and possibilites SoFi has to offer: Why SoFi is the best source apportionment software. SoFi is not limited to any specific dataset, it can be used universally for any kind of multivariate data.
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