Interpolated optimized corrections method

The interpolated optimized corrections (IOC) method " uses HE energies, gradients, and Hessians at the high-level stationary points to improve the quality of a Vmep and of frequency and moment of inertia profiles originally calculated at EE. 

The interpolated optimized energies (lOE) scheme " is like the IOC scheme except that the frequencies are not corrected at the higher level. Although the lOE method only uses high-level data at the stationary points. 

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