Line Then Plane optimization method

Line Then Plane ILTP) optimization method. MMFF force held, 40 One-electron integrals, 67 Powell update, for optimizations. 321 ... 

Two-structure interpolation methods saddle, line-then-plane, ridge and step-and-slide optimizations... 

The idea in the line then plane (LTP) algorithm is similar to the saddle method, but the constrained optimization is done in the hypeiplane perpendicular to the inteipolation line between the two end-points, rather than on a hypersphere. LTP may also be considered as a variation of LUP where only two intermediate points are used, and the end-points are discarded after each minimization. This is iliustrated in Figure 7. 

---