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NonlinearRegressionIFunctionf Method
Computes the weight, frequency, and residual given the parameter vector theta for a single observation.

Namespace: Imsl.Stat
Assembly: ImslCS (in ImslCS.dll) Version: 6.5.2.0
Syntax
bool f(
	double[] theta,
	int iobs,
	double[] frq,
	double[] wt,
	double[] e
)

Parameters

theta
Type: SystemDouble
An input double array containing the parameter values of the model.
iobs
Type: SystemInt32
An input int value indicating the observation index.
frq
Type: SystemDouble
An output double array of length 1 containing the frequency for observation y[iobs].
wt
Type: SystemDouble
An output double array of length 1 containing the weight for observation y[iobs].
e
Type: SystemDouble
An output double array of length 1 which contains the error (residual) for observation y[iobs].

Return Value

Type: Boolean
A bool value representing the completion indicator. true indicates iobs is less than the number of observations. false indicates iobs is greater than or equal to the number of observations and wt, freq, and e are not output.
Remarks

The length of theta corresponds to the number of unknown parameters in the model.

The function is evaluated at observation y[iobs].

Use wt = 1.0 for equal weighting (unweighted least squares).

See Also