Global Index (all files) (short | long) | Local contents | Local Index (files in subdir) (short | long)

[DoTerm, WhatTerm] = terminat(TERMMETHOD, TermOpt, ActGen, ActTime, GlobalOpt, BestObjV, ObjV, Chrom, VLUB);

TERMINATion function This function is the high level termination function. Different methods for termination are supported. (See explanation of TERM_F input parameter below.) All termination methods can be combined. Then termination occurs, if any one of the termination methods is true (the methods are OR combined). Syntax: [DoTerm, WhatTerm] = terminat(TERM_F, TermOpt, ActGen, ActTime, ... GlobalOpt, BestObjV, ObjV, Chrom, VLUB); Input parameters: TERMMETHOD- String/Scalar containing name of the termination function/termination method. 1: terminate, if maximal number of generations TermOpt(1) is reached 2: terminate, if maximal execution/computing time TermOpt(2) is reached 3: terminate, if global optimum with termination precision TermOpt(3) is reached 4: terminate, if difference between mean of best objective values of last xx generations and current best objective value is smaller than value in TermOpt(5) 5: terminate, if standard deviation of objective values of current generation is smaller than value in TermOpt(4) 6: terminate, if difference between the objective values of the current worst and best individual is smaller than value in TermOpt(6) 7: terminate, if the difference between 1 and the phi value is smaller than value in TermOpt(7) 8: terminate, if the difference between 1 and the kappa value is smaller than value in TermOpt(8) 9: terminate, if cluster analysis tells you value is smaller than value in TermOpt(9) >=12: terminate for each of the single digit numbers for example: 12: terminate for 1 or 2 13: terminate for 1 or 3 32: terminate for 3 or 2 135: terminate for 1 or 3 or 5 TermOpt - Vector/scalar containg parameters/values for ter- mination methods. TermOpt(1): maximal number of generations TermOpt(2): maximal execution/computing time TermOpt(3): difference to global optimum TermOpt(4): difference of best objective value and running mean of last xx generation TermOpt(5): minimal standard deviation TermOpt(6): difference of best and worst objective value in current generation TermOpt(7): difference between 1 and phi TermOpt(8): difference between 1 and kappa TermOpt(9): difference between 1 and cluster termination criteria ActGen - (optional) Scalar containing actual number of generations. ActTime - (optional) Scalar containing actual execution time in minutes. GlobalOpt - (optional) Scalar containg global optimum. BestObjV - (optional) Vector/matrix containing best objective value(s) per generation for all previous generations. ObjV - (optional) Vector/Matrix containing all objective values of current generations. Chrom - (optional) Matrix containing decoded variables of all individuals in current generation VLUB - (optional) Matrix containing boundaries of variables Output parameters: DoTerm - Scalar indicating termination or not (termination criterion fullfilled or not) 0: do not terminate 1: do terminate WhatTerm - Vector containing percent of termination criterion already reached, for instance: 10 from 100 generations would be result in WhatTerm(1) = 0.1, similar for other termination methods, if a criterion is not used, WhatTerm for this criterion will be NaN, max(WhatTerm) will give the current termination criterion See also: geamain

This function calls | This function is called by |
---|---|

GEATbx: |
Main page Tutorial Algorithms M-functions Parameter/Options Example functions www.geatbx.com |

This document is part of

The Genetic and Evolutionary Algorithm Toolbox is