Description Usage Arguments Details See Also Examples

Cook a dynr model to estimate its free parameters

1 2 3 |

`dynrModel` |
a dynr model compiled using dynr.model, consisting of recipes for submodels, starting values, parameter names, and C code for each submodel |

`conf.level` |
a cumulative proportion indicating the level of desired confidence intervals for the final parameter estimates (default is .95) |

`infile` |
(not required for models specified through the recipe functions) the name of a file that has the C codes for all dynr submodels for those interested in specifying a model directly in C |

`optimization_flag` |
a flag (TRUE/FALSE) indicating whether optimization is to be done. |

`hessian_flag` |
a flag (TRUE/FALSE) indicating whether the Hessian matrix is to be calculated. |

`verbose` |
a flag (TRUE/FALSE) indicating whether more detailed intermediate output during the estimation process should be printed |

`weight_flag` |
a flag (TRUE/FALSE) indicating whether the negative log likelihood function should be weighted by the length of the time series for each individual |

`debug_flag` |
a flag (TRUE/FALSE) indicating whether users want additional dynr output that can be used for diagnostic purposes |

Free parameter estimation uses the SLSQP routine from NLOPT.

The typical items returned in the cooked model are the filtered and smoothed latent variable estimates.
`eta_smooth_final`

, `error_cov_smooth_final`

and `pr_t_given_T`

are respectively
time-varying smoothed latent variable mean estimates, smoothed error covariance estimates,
and smoothed regime probability.
`eta_filtered`

, `error_cov_filtered`

and `pr_t_given_t`

are respectively
time-varying filtered latent variable mean estimates, filtered error covariance matrix estimates,
and filtered regime probability.

When `debug_flag`

is TRUE, then additional information is passed into the cooked model.
`eta_predicted`

, `error_cov_predicted`

, `innov_vec`

, and `residual_cov`

are respectively
time-varying predicted latent variable mean estimates, predicted error covariance matrix estimates, the error/residual estimates (innovation vector),
and the error/residual covariance matrix estimates.

The exit flag given after optimization has finished is from the SLSQP optimizer. Generally, error codes have negative values and successful codes have positive values. However, codes 5 and 6 do not indicate the model converged, but rather simply ran out of iterations or time, respectively. A more full description of each code is available at http://ab-initio.mit.edu/wiki/index.php/NLopt_Reference#Return_values and is also listed in the table below.

NLOPT Term | Numeric Code | Description |

SUCCESS | 1 | Generic success return value. |

STOPVAL_REACHED | 2 | Optimization stopped because stopval (above) was reached. |

FTOL_REACHED | 3 | Optimization stopped because ftol_rel or ftol_abs (above) was reached. |

XTOL_REACHED | 4 | Optimization stopped because xtol_rel or xtol_abs (above) was reached. |

MAXEVAL_REACHED | 5 | Optimization stopped because maxeval (above) was reached. |

MAXTIME_REACHED | 6 | Optimization stopped because maxtime (above) was reached. |

FAILURE | -1 | Generic failure code. |

INVALID_ARGS | -2 | Invalid arguments (e.g. lower bounds are bigger than upper bounds, an unknown algorithm was specified, etcetera). |

OUT_OF_MEMORY | -3 | Ran out of memory. |

ROUNDOFF_LIMITED | -4 | Halted because roundoff errors limited progress. (In this case, the optimization still typically returns a useful result.) |

FORCED_STOP | -5 | Halted because of a forced termination: the user called nlopt_force_stop(opt) on the optimization's nlopt_opt object opt from the user's objective function or constraints. |

`autoplot`

, `coef`

, `confint`

,
`deviance`

, `initialize`

, `logLik`

,
`names`

, `nobs`

, `plot`

, `print`

,
`show`

, `summary`

, `vcov`

.

1 | ```
#fitted.model <- dynr.cook(model)
``` |

dynr documentation built on Feb. 9, 2018, 6:07 a.m.

Embedding an R snippet on your website

Add the following code to your website.

For more information on customizing the embed code, read Embedding Snippets.