Multicoefficient correlation method

Dahlke EE, Orthmeyta- MA, Truhlar DG (2(X)8) Assessment of multicoefficient correlation methods. J Phys Chem B 112 2372-2381... 

Table 5 gives the errors for a DFT method, four hybrid DFT methods, and AMI. Although hybrid DFT is very affordable, it lacks the accuracy of multicoefficient semi-empirical methods based on explicitly correlated wave fiinctions. Nevertheless the mPWlPW91/MG3S and AMI methods have performance/cost characteristics that put them near the envelope of best performance in Figure 1. AMI is valuable for larger systems where the other methods in the figure are not affordable. 

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