Command Index

Syntax >>> ABORT (NO) Parent Command >> CONVERGE/STOP Subcommand – Description It may be appropriate to abort a simulation if the value of the objective function (as accumulated to the current simulation time) exceeds the minimum objective function value, indicating that the run will not lead to a reduction in the objective function. (Note that […]

Syntax >> CONVERGE or >> STOP or >> TOLERANCE Parent Command > COMPUTATION   Subcommand >>> ADJUST >>> CONSECUTIVE >>> DELTFACT >>> FORWARD >>> INCOMPLETE >>> INPUT >>> ITERATION >>> LEVENBERG >>> LIST >>> MARQUARDT >>> REDUCTION >>> SIMULATION >>> STEP >>> UPHILL >>> WARNING   Description This is the parent command of a number

Syntax > COMPUTATION Parent Command – Subcommand >> CONVERGE >> ERROR >> JACOBIAN >> OPTION >> OUTPUT Description This is the first-level command for specifying a number of computational parameters, convergence criteria, program options, and output formats. The general format is as follows: > COMPUTATION >> specify various program OPTIONS >> specify CONVERGEnce criteria >>

Syntax >>>> WINDOW (INDIVIDUAL / : time_A time_B (time_unit)) Parent Command all third-level commands in block > OBSERVATION   Subcommand –   Description The times at which the observed and calculated system response are compared are referred to as calibration times. They are specified using command >> TIME. The calibration times are defined globally, i.e.,

Syntax >>>> SUM Parent Command all third-level commands in block > OBSERVATION   Subcommand –   Description If multiple elements or connections are provided to indicate the location of a measurement point, this command takes the sum of all calculated values as the model output to be compared to the data. The user must ensure

Syntax >>>> HEADER: nskip or >>>> SKIP: nskip Parent Command all third-level commands in block > OBSERVATION   Subcommand –   Description This command identifies the number of lines to be skipped before reading data. Data reading starts nskip+1 lines after the command line >>>> DATA, or on the (nskip+1)-th line of the data file

Syntax >>>> SET: iset Parent Command all third-level commands in block > OBSERVATION   Subcommand – Description Multiple data sets can be stored on a single file, separated by a single line containing characters. This command is used to select the iset‘th data set on a data file. By default, data are read from the

Syntax >>>> RELATIVE: rel_err (%) (+ const_err) (ADD NOISE) Parent Command all third-level commands in block > OBSERVATION   Subcommand –   Description This command takes a fraction of the observed value as the standard deviation of the measurement error (for more details see command >>>> DEVIATION (o)). A constant error can be added to

Syntax >>>> REGRESSION: rho Parent Command any third-level command in block > OBSERVATION Subcommand none Description This command sets the autoregression coefficient rho for a data set. To partially account for time correlations, a first-order autogregressive time series model (AR1) can be applied to the residuals: The first-order autoregressive should be applied to time series

Syntax >>>> PREDICTION Parent Command all third-level commands in block > OBSERVATION   Subcommand –   Description A data-worth analysis examines the value of adding potential or removing (actually or presumably) existing observations to or from an existing calibration data set. Data worth is calculated either by the change in the estimation uncertainty (i.e., the