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The Rules

- Reflect the point with the highest WSS through centroid (center) of the simplex
- If this produces the lowest WSS (best point) expand the simplex and reflect further
- If this is just a good point start at the top and reflect again
- If this the highest WSS (worst point) compress the simplex and reflect closer

**Figure 11.6.1 Contour map of kel versus V showing probable Path of Simplex Method**

The simplex method is relatively robust and numerically less complicated but it can be inefficient (slow) for simple problems. This method is recommended as a starting point with Boomer. Actually the method I use most of the time involves starting with the simplex method and (automatically) continuing with the Damping-Gauss-Newton method. It seems work well much of the time.

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