E05SBF 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
Algorithm Statistics
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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 unconstrained objective minimum : -837.966
Best Known constrained objective minimum : -731.707
Achieved objective value : -731.708
Comparison between known and achieved optima.
x_target_u x_target_c xb
1 -420.97 -394.15 -394.17
2 -420.97 -433.48 -433.53
Comparison between scaled constraint violations.
c_target_u c_target_c cb
1 0.00000 0.00000 0.00000
2 0.04219 0.00000 0.00000
3 0.75749 0.00000 0.00002
2. Solution using coupled local minimizer E04UCF
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 unconstrained objective minimum : -837.966
Best Known constrained objective minimum : -731.707
Achieved objective value : -731.706
Comparison between known and achieved optima.
x_target_u x_target_c xb
1 -420.97 -394.15 -394.15
2 -420.97 -433.48 -433.49
Comparison between scaled constraint violations.
c_target_u c_target_c cb
1 0.00000 0.00000 0.00000
2 0.04219 0.00000 0.00000
3 0.75749 0.00000 0.00000