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# ARMA_CALIBRATE

Computes the maximum likelihood estimated (MLE) model parameters.

## Syntax

**ARMA**(

^{i}_CALIBRATE**X**,

**Order**,

**Model**,

**Mask**,

**Method**,

**maxIter**)

**X**

is the univariate time series data (a one dimensional array of cells (e.g. rows or columns)).

**Order**

is the time order of the data series (i.e. whether the first data point corresponds to the earliest or latest date (earliest date=1 (default), latest date=0)).

Order | Description |
---|---|

1 | ascending (the first data point corresponds to the earliest date) |

0 | descending (the first data point corresponds to the latest date) |

**Model**

is the ARMA model representation array (a one dimensional array of cells (e.g. rows or columns)) (see ARMA function).

**Mask**

is an array of 0's and 1's to specify which parameters to calibrate for. If missing, all parameters are included in the calibration.

**Method**

is the calibration/fitting method (1=MLE, 2=Bayesian). If missing, maximum likelihood estimate (MLE) is assumed.

Method | Description |
---|---|

1 | Maximum Likelihood Estimate (MLE) |

2 | Bayesian |

**maxIter**

is the maximum number of iterations used to calibrate the model. If missing, the default maximum of 100 is assumed.

## Remarks

**Warning:**ARMA_CALIBRATE() function is deprecated as of version 1.63: use ARMA_PARAM function instead.- The underlying model is described here.
- The time series is homogeneous or equally spaced.
- The time series may include missing values (e.g. #N/A) at either end.
- The maximum likelihood estimation (MLE) is a statistical method for fitting a model to the data, and provides estimates for the model's parameters.

## Files Examples

## References

- Hamilton, J .D.; Time Series Analysis , Princeton University Press (1994), ISBN 0-691-04289-6
- Tsay, Ruey S.; Analysis of Financial Time Series John Wiley & SONS. (2005), ISBN 0-471-690740