What Is Optimization Toolbox?

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fminconsubproblem at each iteration. An estimate of the Hessian of theLagrangian is updated at each iteration using the BFGS formula (seefminunc and references [7] and [8]).A line search is performed using a merit function similar to thatproposed by [4], [5], and [6]. The QP subproblem is solved using anactive set strategy similar to that described in [3]. A full description ofthis algorithm is found in “Constrained Optimization” on page 3-29 inChapter 3, “Standard Algorithms”.See also “SQP Implementation” on page 3-32 for more details on thealgorithm used.Limitationsfmincon only handles real variables.fmincon is a gradient-based method that is designed to work onproblems where the objective and constraint functions are bothcontinuous and have continuous first derivatives.fmincon might only give local solutions.When the problem is infeasible, fmincon attempts to minimize themaximum constraint value.The objective function and constraint function must be real-valued; thatis, they cannot return complex values.The large-scale method does not allow equal upper and lower bounds.For example, if lb(2)==ub(2), thenfmincon gives this error:Equal upper and lower bounds not permitted in thislarge-scale method.Use equality constraints and the medium-scalemethod instead.If you have only equality constraints, you can still use the large-scalemethod. But if you have both equalities and bounds, you must use themedium-scale method.8-52
fminconReferences[1] Coleman, T.F. and Y. Li, “An Interior, Trust Region Approachfor Nonlinear Minimization Subject to Bounds,” SIAM Journal onOptimization, Vol. 6, pp. 418-445, 1996.[2] Coleman, T.F. and Y. Li, “On the Convergence of Reflective NewtonMethods for Large-Scale Nonlinear Minimization Subject to Bounds,”Mathematical Programming, Vol. 67, Number 2, pp. 189-224, 1994.[3] Gill, P.E., W. Murray, and M.H. Wright, Practical Optimization,London, Academic Press, 1981.[4] Han, S.P., “A Globally Convergent Method for NonlinearProgramming,” Vol. 22, Journal of Optimization Theory andApplications, p. 297,1977.[5] Powell, M.J.D., “A Fast Algorithm for Nonlinearly ConstrainedOptimization Calculations,” Numerical Analysis, ed. G.A.Watson,Lecture Notes in Mathematics, Springer Verlag, Vol. 630, 1978.[6] Powell, M.J.D., “The Convergence of Variable Metric MethodsFor Nonlinearly Constrained Optimization Calculations,” NonlinearProgramming 3 (O.L. Mangasarian, R.R. Meyer, and S.M. Robinson,eds.), Academic Press, 1978.See Also@ (function_handle), fminbnd, fminsearch, fminunc,optimsetoptimtool8-53
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Optimization Toolbox 3User’s Guid
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Revision HistoryNovember 1990 First
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Acknowledgments
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Nonlinear Equations with Finite-Dif
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Quadratic Programming (QP) Subprobl
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Specifying the Options ............
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xivContents
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1 Getting StartedWhat Is Optimizati
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1 Getting StartedOptimization Examp
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1 Getting Started[x, fval] =lsqlin(
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2 TutorialLarge-Scale Examples (p.
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2 TutorialMinimization (Continued)T
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2 TutorialUsing the Optimization Fu
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2 TutorialA choice of line search s
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2 TutorialThe tutorial uses the fun
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2 Tutorialfunction evaluations. See
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2 TutorialTo restrict x inEquation2
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2 Tutorialceq=[];DCeq = [ ];G conta
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2 TutorialEquality Constrained Exam
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2 Tutorialfunction y = findzero(b,
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2 Tutorial3.7081Sharing Variables U
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2 Tutorialcomponents.');end% Evalua
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2 TutorialThe example produces the
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2 TutorialClosed-Loop ResponseThe p
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2 Tutorialfunction [Kp,Ki,Kd] = run
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2 TutorialThe resulting closed-loop
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2 Tutorialcalling the simulation tw
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2 TutorialThe last value shown in t
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2 TutorialStep 1: Write an M-file f
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2 TutorialLarge-Scale Examples•
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2 TutorialNote The following table
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2 TutorialLarge-Scale Problem Cover
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2 Tutorialoptimset('Display','iter'
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2 Tutorialeither) then, in this pro
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2 TutorialNonlinear Least-Squares w
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2 TutorialThe problem is to find x
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Large-Scale Examplesto zero (for fm
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Large-Scale Examples024681012141618
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Large-Scale Examplesfval =270.4790o
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Large-Scale Examplesans =1.1885e-01
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Large-Scale ExamplesW = Hinfo*Y - V
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Large-Scale Exampleswere not the sa
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Large-Scale Examplestradeoff is ben
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Large-Scale Examplesfunction W = qp
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Large-Scale Examples% RUNQPBOX4PREC
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Large-Scale Examplesalgorithm: 'lar
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Large-Scale Examplescgiterations: 0
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Large-Scale Examplesdoes not give a
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Default Options SettingsDetermining
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Displaying Iterative OutputDisplayi
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Displaying Iterative Outputbintprog
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Displaying Iterative OutputfsolveTh
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Displaying Iterative Outputlsqnonli
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Calling an Output Function Iterativ
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Optimizing Anonymous Functions Inst
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Optimizing Anonymous Functions Inst
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Typical Problems and How to Deal wi
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Typical Problems and How to Deal wi
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3Standard AlgorithmsStandard Algori
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Multiobjective Optimization (p. 3-4
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Demos of Medium-Scale MethodsDemos
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Unconstrained OptimizationFigure 3-
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Unconstrained Optimizationvariables
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Quasi-Newton ImplementationQuasi-Ne
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Quasi-Newton Implementationvalues o
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Quasi-Newton ImplementationMixed Cu
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Quasi-Newton ImplementationCase 4.3
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Least-Squares OptimizationIn proble
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Least-Squares OptimizationLevenberg
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Least-Squares OptimizationThe linea
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Nonlinear Systems of EquationsNonli
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Nonlinear Systems of Equationsand s
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Constrained OptimizationConstrained
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Constrained OptimizationGiven the p
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Constrained OptimizationUpdating th
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Constrained Optimizationis updated
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Constrained OptimizationInitializat
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Constrained OptimizationSimplex Alg
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Constrained Optimization3 Updates t
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Multiobjective OptimizationMultiobj
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Multiobjective OptimizationIn the t
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Multiobjective OptimizationThe afor
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Multiobjective OptimizationWhat is
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Multiobjective Optimization(3-51)wh
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Selected BibliographySelected Bibli
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Selected Bibliography[24] Han, S.P.
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4Large-Scale AlgorithmsLarge-Scale
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Trust-Region Methods for Nonlinear
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Trust-Region Methods for Nonlinear
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Preconditioned Conjugate GradientsP
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Linearly Constrained ProblemsLinear
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Linearly Constrained ProblemsThe sc
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Quadratic ProgrammingQuadratic Prog
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Large-Scale Linear ProgrammingLarge
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Large-Scale Linear ProgrammingThe a
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Large-Scale Linear ProgrammingWhile
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Selected Bibliography[11] Zhang, Y.
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5Optimization ToolGetting Started w
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Getting Started with the Optimizati
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Selecting a SolverSelecting a Solve
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Defining the ProblemDefining the Pr
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Defining the ProblemFunction to Min
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Defining the ProblemConstraintsLine
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Defining the ProblemM-file, or as a
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Defining the ProblemBounds are lowe
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Defining the Problemfseminf Problem
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Defining the ProblemLinear System o
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Defining the ProblemConstraintsBoun
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Defining the ProblemConstraintsWith
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Running a Problem in the Optimizati
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Specifying the Options• Xtoleranc
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Specifying the Optionsoption to a d
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Specifying the OptionsThe following
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Specifying the OptionsMultiobjectiv
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Specifying the OptionsPlot Function
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Specifying the Options• final —
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Importing and Exporting Your WorkIm
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Importing and Exporting Your WorkYo
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Optimization Tool ExamplesOptimizat
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Optimization Tool Examples6 In the
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Optimization Tool Examplesmax Line
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Optimization Tool ExamplesThe Aeq a
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6Argument and OptionsReferenceThis
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Function ArgumentsInput Arguments (
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Function ArgumentsInput Arguments (
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Function ArgumentsOutput Arguments
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Optimization OptionsOptimization Op
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Optimization Optionsspecifies Outpu
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Optimization OptionsoptimValues Fie
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Optimization OptionsStopping an Opt
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7Functions — By CategoryMinimizat
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Least Squares (Curve Fitting)Least
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Page 287 and 288: intprogx = bintprog(f,A,b,Aeq,Beq,x
Page 289 and 290: intprogBranchStrategyStrategy the a
Page 291 and 292: intprog• Verifies that no better
Page 293 and 294: intprogExampleTo minimize the funct
Page 295 and 296: colorPurposeSyntaxDescriptionColumn
Page 297 and 298: fgoalattainx = fgoalattain(fun,x0,g
Page 299 and 300: fgoalattainfunThefunctiontobeminimi
Page 301 and 302: fgoalattainfunction [c,ceq,GC,GCeq]
Page 303 and 304: fgoalattainattainfactorexitflaglamb
Page 305 and 306: fgoalattainFunValCheckGoalsExactAch
Page 307 and 308: fgoalattainExamplesConsider a linea
Page 309 and 310: fgoalattainof overattainment is met
Page 311 and 312: fgoalattainLimitationsReferencesThe
Page 313 and 314: fminbndInputArguments“Function Ar
Page 315 and 316: fminbndPlotFcnsPlots various measur
Page 317 and 318: fminbndLimitationsReferencesThe fun
Page 319 and 320: fminconx = fmincon(fun,x0,A,b) star
Page 321 and 322: fminconfunThe function to be minimi
Page 323 and 324: fminconthen the function nonlcon mu
Page 325 and 326: fmincongradhessianlambdaoutputGradi
Page 327 and 328: fminconthe values of these fields i
Page 329 and 330: fminconHessianHessMultIf 'on', fmin
Page 331 and 332: fminconPrecondBandWidth Upper bandw
Page 333 and 334: fminconSince both constraints are l
Page 335: fmincon• A dense (or fairly dense
Page 339 and 340: fminimaxx = fminimax(fun,x,A,b,Aeq,
Page 341 and 342: fminimaxfunThe function to be minim
Page 343 and 344: fminimaxIf nonlcon returns a vector
Page 345 and 346: fminimaxlambdamaxfvaloutputStructur
Page 347 and 348: fminimaxMeritFunctionMinAbsMaxOutpu
Page 349 and 350: fminimaxx0 = [0.1; 0.1]; % Make a s
Page 351 and 352: fminimax[3] Han, S.P., “A Globall
Page 353 and 354: fminsearchInputArguments“Function
Page 355 and 356: fminsearchOutputFcnPlotFcnsTolFunSp
Page 357 and 358: fminsearcha = sqrt(2);banana = @(x)
Page 359 and 360: fminuncPurposeEquationFind minimum
Page 361 and 362: fminuncfunThefunctiontobeminimized.
Page 363 and 364: fminuncexitflaggradhessianoutputInt
Page 365 and 366: fminuncLarge-Scale and Medium-Scale
Page 367 and 368: fminuncHessianHessMultIf 'on', fmin
Page 369 and 370: fminuncPrecondBandWidthTolPCGUpper
Page 371 and 372: fminuncx0 = [1,1];[x,fval] = fminun
Page 373 and 374: fminunc“Trust-Region Methods for
Page 375 and 376: fseminfPurposeEquationFind minimum
Page 377 and 378: fseminf“Avoiding Global Variables
Page 379 and 380: fseminfoptions“Options” on page
Page 381 and 382: fseminflambdaoutput5 Magnitude of d
Page 383 and 384: fseminfOutputFcnPlotFcnsRelLineSrch
Page 385 and 386: fseminfSecond, write an M-file, myc
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fseminfThe plot command inside 'myc
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fseminfThe goal was to minimize the
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fsolvePurposeEquationSolve system o
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fsolvefunThe nonlinear system of eq
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fsolvefuncCountalgorithmcgiteration
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fsolvePlotFcnsTolFunPlots various m
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fsolveJacobPatternMaxPCGIterPrecond
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fsolve[x,fval] = fsolve(@myfun,x0,o
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fsolveYoucanformulateandsolvethepro
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fsolveLimitationsThe function to be
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fzeroPurposeSyntaxDescriptionFind r
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fzeroDisplayFunValCheckOutputFcnLev
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fzerowrite an M-file called f.m.fun
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fzmultPurposeSyntaxMultiplication w
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linprogPurposeEquationSolve linear
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linproglambdaoutput-2 No feasible p
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linprogsubject toFirst, enter the c
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linprogDiagnosticsLarge-Scale Optim
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linprogthe primal objective < -1e+1
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lsqcurvefitPurposeEquationSolve non
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lsqcurvefitfunThe function you want
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lsqcurvefitoutputupperUpper bounds
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lsqcurvefitJacobianMaxFunEvalsMaxIt
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lsqcurvefitJacobPatternMaxPCGIterSp
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lsqcurvefitNote that at the time th
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lsqcurvefitof J with many nonzeros,
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lsqlinPurposeEquationSolve constrai
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lsqlinlambdaoutput3 Change in the r
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lsqlinDiagnosticsDisplayMaxIterTypi
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lsqlinPrecondBandWidthUpper bandwid
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lsqlinNotesFor problems with no con
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lsqlinReferences[1] Coleman, T.F. a
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lsqnonlinreturn a vector of values
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lsqnonlinOutputArguments“Function
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lsqnonlinalgorithm. See “Optimiza
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lsqnonlinJacobMultFunction handle f
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lsqnonlinfor(that is, F should have
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lsqnonlinand Requirements on page 2
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lsqnonnegPurposeEquationSolve nonne
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lsqnonneglambdaoutputVector contain
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optimgetPurposeSyntaxDescriptionExa
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optimsetIn the following lists, val
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optimsetLineSearchType'cubicpoly' |
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optimtoolPurposeSyntaxDescriptionTo
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quadprogPurposeEquationSolve quadra
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quadproglambdaoutput3 Change in the
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quadprogLargeScaleUse large-scale a
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quadprogTolPCGTermination tolerance
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quadprogNotesIn general quadprog lo
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quadprogWhen the equality constrain
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IndexIndex ε-Constraint method 3-4
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Indexinfeasible solution warninglin
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Indexdescriptions 6-8possible value
show all

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