.. _R4.03.06:

.. image:: images/1000020000000279000001F3F8E27CC80CE0F5A4.png
    :width: 4.1346in
    :height: 3.1508in


.. _RefImage_1000020000000279000001F3F8E27CC80CE0F5A4.png:


**r4.03.06** Recalibration algorithms
====================================

**Summary:**

In this document we present the recalibration algorithms implemented in MACR_RECAL. First, it is a Levenberg-Marquardt algorithm with limits and then an evolutionary algorithm.

For the first, the general method is first described before specifying certain elements. Detailed are the calculation of the functional, the Jacobian matrix, the determination of the initial regularization parameter as well as its evolution, the management of the limits and the convergence criterion.

The general principles of genetic algorithms, and in particular the evolutionary algorithm, as well as the implementation in *Code_Aster*, are presented in the second part of the document.




.. toctree::
    :hidden:

    self

.. toctree::
    :maxdepth: 2
    :numbered:

    Introduction
    Algorithme_de_Levenberg-Marquardt
    Algorithme__volutionnaire
    Bibliographie
    Description_des_versions_du_document