nag_glopt_nlp_pso (e05sbc) Example Program Results
Minimization of the Schwefel function.
Subject to one linear and two nonlinear constraints.
Default Option Queries:
Constraint Norm : L1
Maximum Iterations Completed : 1000 DEFAULT
Distance Tolerance : 0.0001
1. Solution without using coupled local minimizer.
(User-supplied callback confun, first invocation.)
(User-supplied callback objfun_schwefel, first invocation.)
(User-supplied callback monmod, first invocation.)
Algorithm Statistics
--------------------
Total complete iterations : 277
Complete iterations since improvement : 1
Total particles converged to xb : 0
Total improvements to global optimum : 117
Total function evaluations : 4222
Total particles re-initialized : 0
Total constraints violated : 0
Solution Status : Target value achieved
Known constrained objective optimum : -731.707
Achieved objective value : -731.708
Comparison between the known optimum and the achieved solution.
x_target xb
1 -394.15 -394.17
2 -433.48 -433.53
Comparison between scaled constraint violations.
c_target cb
1 0.00000 0.00000
2 0.00000 0.00000
3 0.00000 0.00002
2. Solution using coupled local minimizer nag_opt_nlp (e04ucc).
Algorithm Statistics
--------------------
Total complete iterations : 4
Complete iterations since improvement : 1
Total particles converged to xb : 0
Total improvements to global optimum : 7
Total function evaluations : 155
Total particles re-initialized : 0
Total constraints violated : 0
Solution Status : Target value achieved
Known constrained objective optimum : -731.707
Achieved objective value : -731.706
Comparison between the known optimum and the achieved solution.
x_target xb
1 -394.15 -394.15
2 -433.48 -433.49
Comparison between scaled constraint violations.
c_target cb
1 0.00000 0.00000
2 0.00000 0.00000
3 0.00000 0.00000