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The estimate of the expected loss-function improvement at the next iteration is based on the Gauss-Newton vector compute

Last post by fyousefi « Tue Mar 02, 2021 2:37 pm

by fyousefi » Tue Mar 02, 2021 2:37 pm

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Last post by fyousefi
Tue Mar 02, 2021 2:37 pm
Numerical search method used for iterative parameter estimation

Last post by fyousefi « Tue Mar 02, 2021 2:37 pm

by fyousefi » Tue Mar 02, 2021 2:37 pm

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Last post by fyousefi
Tue Mar 02, 2021 2:37 pm
A combination of the line search algorithms, ''gn'', ''lm'', ''gna'', and ''grad'' methods is tried in sequence at each

Last post by fyousefi « Tue Mar 02, 2021 2:36 pm

by fyousefi » Tue Mar 02, 2021 2:36 pm

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Last post by fyousefi
Tue Mar 02, 2021 2:36 pm
The first descent direction leading to a reduction in estimation cost is used.

Last post by fyousefi « Tue Mar 02, 2021 2:36 pm

by fyousefi » Tue Mar 02, 2021 2:36 pm

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Last post by fyousefi
Tue Mar 02, 2021 2:36 pm
Singular values of the Jacobian matrix less than GnPinvConstant*eps*max(size(J))*norm(J) are discarded when computing th

Last post by fyousefi « Tue Mar 02, 2021 2:35 pm

by fyousefi » Tue Mar 02, 2021 2:35 pm

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Last post by fyousefi
Tue Mar 02, 2021 2:35 pm
J is the Jacobian matrix. The Hessian matrix is approximated as JTJ.

Last post by fyousefi « Tue Mar 02, 2021 2:35 pm

by fyousefi » Tue Mar 02, 2021 2:35 pm

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Last post by fyousefi
Tue Mar 02, 2021 2:35 pm
Adaptive subspace Gauss-Newton search. Eigenvalues less than gamma*max(sv) of the Hessian are ignored, where sv contains

Last post by fyousefi « Tue Mar 02, 2021 2:34 pm

by fyousefi » Tue Mar 02, 2021 2:34 pm

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Last post by fyousefi
Tue Mar 02, 2021 2:34 pm
Adaptive subspace Gauss-Newton search. Eigenvalues less than gamma*max(sv) of the Hessian are ignored, where sv contains

Last post by fyousefi « Tue Mar 02, 2021 2:33 pm

by fyousefi » Tue Mar 02, 2021 2:33 pm

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Last post by fyousefi
Tue Mar 02, 2021 2:33 pm
The Gauss-Newton direction is computed in the remaining subspace.

Last post by fyousefi « Tue Mar 02, 2021 2:32 pm

by fyousefi » Tue Mar 02, 2021 2:32 pm

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Last post by fyousefi
Tue Mar 02, 2021 2:32 pm
gamma has the initial value InitialGnaTolerance. This value is increased by the factor LMStep each time the search fails

Last post by fyousefi « Tue Mar 02, 2021 2:31 pm

by fyousefi » Tue Mar 02, 2021 2:31 pm

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Last post by fyousefi
Tue Mar 02, 2021 2:31 pm
This value is decreased by the factor 2*LMStep each time a search is successful without any bisections.

Last post by fyousefi « Tue Mar 02, 2021 2:30 pm

by fyousefi » Tue Mar 02, 2021 2:30 pm

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Last post by fyousefi
Tue Mar 02, 2021 2:30 pm
Levenberg-Marquardt least squares search, where the next parameter value is -pinv(H+d*I)*grad from the previous one.

Last post by fyousefi « Tue Mar 02, 2021 2:30 pm

by fyousefi » Tue Mar 02, 2021 2:30 pm

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Last post by fyousefi
Tue Mar 02, 2021 2:30 pm
H is the Hessian, I is the identity matrix, and grad is the gradient. d is a number that is increased until a lower valu

Last post by fyousefi « Tue Mar 02, 2021 2:29 pm

by fyousefi » Tue Mar 02, 2021 2:29 pm

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Last post by fyousefi
Tue Mar 02, 2021 2:29 pm
Estimate state-space model using time or frequency data

Last post by fyousefi « Tue Mar 02, 2021 2:29 pm

by fyousefi » Tue Mar 02, 2021 2:29 pm

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Last post by fyousefi
Tue Mar 02, 2021 2:29 pm
Transfer function with a pair of complex-conjugate poles

Last post by fyousefi « Tue Mar 02, 2021 2:28 pm

by fyousefi » Tue Mar 02, 2021 2:28 pm

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Last post by fyousefi
Tue Mar 02, 2021 2:28 pm
Transfer function with a real and a pair of complex-conjugate poles

Last post by fyousefi « Tue Mar 02, 2021 2:28 pm

by fyousefi » Tue Mar 02, 2021 2:28 pm

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Last post by fyousefi
Tue Mar 02, 2021 2:28 pm
The iddata object cannot be converted into a frequency response data object. Use the "etfe" or "spa" command instead.

Last post by fyousefi « Tue Mar 02, 2021 11:44 am

by fyousefi » Tue Mar 02, 2021 11:44 am

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Last post by fyousefi
Tue Mar 02, 2021 11:44 am
Input/output channel names are not same among concatenated data objects. Those of the first data set will be used in the

Last post by fyousefi « Tue Mar 02, 2021 11:44 am

by fyousefi » Tue Mar 02, 2021 11:44 am

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Last post by fyousefi
Tue Mar 02, 2021 11:44 am
The data contains more columns (number of channels) than rows (number of samples). Check that the data is not transposed

Last post by fyousefi « Tue Mar 02, 2021 11:43 am

by fyousefi » Tue Mar 02, 2021 11:43 am

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Last post by fyousefi
Tue Mar 02, 2021 11:43 am
Frequencies with infinite response have been removed from the data.

Last post by fyousefi « Tue Mar 02, 2021 11:43 am

by fyousefi » Tue Mar 02, 2021 11:43 am

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Last post by fyousefi
Tue Mar 02, 2021 11:43 am
It is recommended to use the "resample" command in place of the "idresamp" command (requires Signal Processing Toolbox(T

Last post by fyousefi « Tue Mar 02, 2021 11:42 am

by fyousefi » Tue Mar 02, 2021 11:42 am

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Last post by fyousefi
Tue Mar 02, 2021 11:42 am
The period of the PRBS signal was changed to { number,integer}. Accordingly, the length of the generated signal will be

Last post by fyousefi « Tue Mar 02, 2021 11:42 am

by fyousefi » Tue Mar 02, 2021 11:42 am

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Last post by fyousefi
Tue Mar 02, 2021 11:42 am
When merging two IDFRD models, their frequency vectors must match (taking frequency units into account).

Last post by fyousefi « Tue Mar 02, 2021 11:41 am

by fyousefi » Tue Mar 02, 2021 11:41 am

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Last post by fyousefi
Tue Mar 02, 2021 11:41 am
Some frequency values in the specified filter are greater than the Nyquist frequency.

Last post by fyousefi « Tue Mar 02, 2021 11:40 am

by fyousefi » Tue Mar 02, 2021 11:40 am

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Last post by fyousefi
Tue Mar 02, 2021 11:40 am
The filter order must be a positive integer. Absolute value of specified order will be used. Note that the causality of

Last post by fyousefi « Tue Mar 02, 2021 11:40 am

by fyousefi » Tue Mar 02, 2021 11:40 am

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Last post by fyousefi
Tue Mar 02, 2021 11:40 am

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