Schema threeDVarConfig.xsd


element ThreeDVarConfig

diagram
annotation	documentation Configuration of 3DVar algorithm.

complexType LineSearchXML

diagram

attributes

Name   Type   Use   Default   Fixed   Annotation type   xs:string      brent      documentation Type of linesearch algorithm. Default: brent. maxIterations   xs:integer   optional   100      documentation Maximum iterations of linesearch. absTolBrent   xs:double   optional   0.01      documentation Tolerance of the absolute search range. relTolBrent   xs:double      0.01      documentation Tolerance of the relative search range.

attribute LineSearchXML/@type

annotation

documentation Type of linesearch algorithm. Default: brent.

attribute LineSearchXML/@maxIterations

annotation

documentation Maximum iterations of linesearch.

attribute LineSearchXML/@absTolBrent

annotation

documentation Tolerance of the absolute search range.

attribute LineSearchXML/@relTolBrent

annotation

documentation Tolerance of the relative search range.

element LineSearchXML/brent

diagram
attributes	Name   Type   Use   Default   Fixed   Annotation startBracketValue   xs:double      1.0      documentation First value evaluated for bracketing in linesearch. maxItBracket   xs:double   optional   0.5      documentation Maximum number of iterations for bracketing. maxExtension   xs:double   optional   100.0      documentation Maximum number of iterations before searching in opposite direction.
annotation	documentation Back tracking if the line search produces estimate with larger cost.

attribute LineSearchXML/brent/@startBracketValue

annotation

documentation First value evaluated for bracketing in linesearch.

attribute LineSearchXML/brent/@maxItBracket

annotation

documentation Maximum number of iterations for bracketing.

attribute LineSearchXML/brent/@maxExtension

annotation

documentation Maximum number of iterations before searching in opposite direction.

complexType ThreeDVarConfigXML

diagram

element ThreeDVarConfigXML/costFunction

diagram
attributes	Name   Type   Use   Default   Fixed   Annotation factor   xs:double      0.5      documentation Specify the multiplication factor for the quadratic cost function.
annotation	documentation Configure cost function to minimize

attribute ThreeDVarConfigXML/costFunction/@factor

annotation

documentation Specify the multiplication factor for the quadratic cost function.

element ThreeDVarConfigXML/algorithm

diagram
attributes	Name   Type   Use   Default   Fixed   Annotation type   xs:string   optional         documentation type of algorithm, default = BFGS, other option = ConjugateGradient method   xs:string   optional         documentation method for conjugategradient algorithm maxIterations   xs:integer   optional         documentation maxIterations, default 25 absTolGrad   xs:double   optional         documentation absTolGrad, defalut 0.01 relTolGrad   xs:double   optional         documentation relTolGrad, defalut 0.01 absTolStep   xs:double   optional         documentation absTolStep, defalut 0.001 relTolStep   xs:double   optional         documentation relTolStep, defalut 0.01
annotation	documentation algorithm

attribute ThreeDVarConfigXML/algorithm/@type

annotation

documentation type of algorithm, default = BFGS, other option = ConjugateGradient

attribute ThreeDVarConfigXML/algorithm/@method

annotation

documentation method for conjugategradient algorithm

attribute ThreeDVarConfigXML/algorithm/@maxIterations

annotation

documentation maxIterations, default 25

attribute ThreeDVarConfigXML/algorithm/@absTolGrad

annotation

documentation absTolGrad, defalut 0.01

attribute ThreeDVarConfigXML/algorithm/@relTolGrad

annotation

documentation relTolGrad, defalut 0.01

attribute ThreeDVarConfigXML/algorithm/@absTolStep

annotation

documentation absTolStep, defalut 0.001

attribute ThreeDVarConfigXML/algorithm/@relTolStep

annotation

documentation relTolStep, defalut 0.01

element ThreeDVarConfigXML/outerLoop

diagram
attributes	Name   Type   Use   Default   Fixed   Annotation type         BFGS      documentation Specify the optimization algorithm to use: BFGS (default),  fletcher reeves, polak ribiere, or Steepest Descent. limitedMemory   xs:boolean   optional   true      documentation If 'type'= BFGS, specify whether to use LBFGS (limited memory BFGS). numOfVectors   xs:integer   optional   3      documentation Maximum number of  stored vectors. maxIterations   xs:integer   optional   200      documentation Maximum number of iterations for (L)BFGS. absTolGrad   xs:double   optional   0.01      documentation Absolute tolerance for gradient. relTolGrad   xs:double   optional   0.01      documentation Relative tolerance for gradient. absTolStep   xs:double   optional   0.001      documentation Absolute tolerance for step size. relTolStep   xs:double   optional   0.001      documentation Relative tolerance for step size.
annotation	documentation Specify outer-loop stopping criteria.

element ThreeDVarConfigXML/lineSearch

diagram
attributes	Name   Type   Use   Default   Fixed   Annotation type   xs:string      brent      documentation Type of linesearch algorithm. Default: brent. maxIterations   xs:integer   optional   100      documentation Maximum iterations of linesearch. absTolBrent   xs:double   optional   0.01      documentation Tolerance of the absolute search range. relTolBrent   xs:double      0.01      documentation Tolerance of the relative search range.
annotation	documentation Specify inner-loop / linesearch criteria.

complexType OuterLoopXML

diagram

attributes

Name   Type   Use   Default   Fixed   Annotation type         BFGS      documentation Specify the optimization algorithm to use: BFGS (default),  fletcher reeves, polak ribiere, or Steepest Descent. limitedMemory   xs:boolean   optional   true      documentation If 'type'= BFGS, specify whether to use LBFGS (limited memory BFGS). numOfVectors   xs:integer   optional   3      documentation Maximum number of  stored vectors. maxIterations   xs:integer   optional   200      documentation Maximum number of iterations for (L)BFGS. absTolGrad   xs:double   optional   0.01      documentation Absolute tolerance for gradient. relTolGrad   xs:double   optional   0.01      documentation Relative tolerance for gradient. absTolStep   xs:double   optional   0.001      documentation Absolute tolerance for step size. relTolStep   xs:double   optional   0.001      documentation Relative tolerance for step size.

attribute OuterLoopXML/@type

annotation

documentation Specify the optimization algorithm to use: BFGS (default),  fletcher reeves, polak ribiere, or Steepest Descent.

attribute OuterLoopXML/@limitedMemory

annotation

documentation If 'type'= BFGS, specify whether to use LBFGS (limited memory BFGS).

attribute OuterLoopXML/@numOfVectors

annotation

documentation Maximum number of  stored vectors.

attribute OuterLoopXML/@maxIterations

annotation

documentation Maximum number of iterations for (L)BFGS.

attribute OuterLoopXML/@absTolGrad

annotation

documentation Absolute tolerance for gradient.

attribute OuterLoopXML/@relTolGrad

annotation

documentation Relative tolerance for gradient.

attribute OuterLoopXML/@absTolStep

annotation

documentation Absolute tolerance for step size.

attribute OuterLoopXML/@relTolStep

annotation

documentation Relative tolerance for step size.

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