News

Joe H. Ward, Jr., Hierarchical Grouping to Optimize an Objective Function, Journal of the American Statistical Association, Vol. 58, No. 301 (Mar., 1963), pp. 236-244 ...
The Nelder-Mead simplex method for function minimization is a "direct" method requiring no derivatives. The objective function is evaluated at the vertices of a simplex, and movement is away from the ...