2 Copyright (C) 2008-2024 EDF R&D
4 This file is part of SALOME ADAO module.
6 This library is free software; you can redistribute it and/or
7 modify it under the terms of the GNU Lesser General Public
8 License as published by the Free Software Foundation; either
9 version 2.1 of the License, or (at your option) any later version.
11 This library is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 Lesser General Public License for more details.
16 You should have received a copy of the GNU Lesser General Public
17 License along with this library; if not, write to the Free Software
18 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
20 See http://www.salome-platform.org/ or email : webmaster.salome@opencascade.com
22 Author: Jean-Philippe Argaud, jean-philippe.argaud@edf.fr, EDF R&D
24 .. index:: single: AdjointTest
25 .. _section_ref_algorithm_AdjointTest:
27 Checking algorithm "*AdjointTest*"
28 ----------------------------------
30 .. ------------------------------------ ..
31 .. include:: snippets/Header2Algo01.rst
33 This algorithm allows to check the quality of the adjoint of an operator
34 :math:`F`, by computing a residue whose theoretical properties are known. The
35 test is applicable to any operator, of evolution :math:`\mathcal{D}` or
36 observation :math:`\mathcal{H}`..
38 For all formulas, with :math:`\mathbf{x}` the current verification point, we
39 take :math:`\mathbf{dx}_0=Normal(0,\mathbf{x})` and
40 :math:`\mathbf{dx}=\alpha_0*\mathbf{dx}_0` with :math:`\alpha_0` a scaling user
41 parameter, defaulting to 1. :math:`F` is the computational operator or code
42 (which is here defined by the observation operator command
43 "*ObservationOperator*").
45 One can observe the following residue, which is the difference of two scalar
48 .. math:: R(\alpha) = | < TangentF_x(\mathbf{dx}) , \mathbf{y} > - < \mathbf{dx} , AdjointF_x(\mathbf{y}) > |
50 in which the optional quantity :math:`\mathbf{y}` must be in the image of
51 :math:`F`. If it is not given, we take its default evaluation :math:`\mathbf{y}
54 This residue must remain constantly equal to zero at the accuracy of the
57 .. ------------------------------------ ..
58 .. include:: snippets/Header2Algo12.rst
60 .. include:: snippets/FeaturePropDerivativeNeeded.rst
62 .. include:: snippets/FeaturePropParallelDerivativesOnly.rst
64 .. ------------------------------------ ..
65 .. include:: snippets/Header2Algo02.rst
67 .. include:: snippets/CheckingPoint.rst
69 .. include:: snippets/Observation.rst
71 .. include:: snippets/ObservationOperator.rst
73 .. ------------------------------------ ..
74 .. include:: snippets/Header2Algo03Chck.rst
76 .. include:: snippets/AmplitudeOfInitialDirection.rst
78 .. include:: snippets/EpsilonMinimumExponent.rst
80 .. include:: snippets/InitialDirection.rst
82 .. include:: snippets/NumberOfPrintedDigits.rst
84 .. include:: snippets/SetSeed.rst
86 StoreSupplementaryCalculations
87 .. index:: single: StoreSupplementaryCalculations
89 *List of names*. This list indicates the names of the supplementary
90 variables, that can be available during or at the end of the algorithm, if
91 they are initially required by the user. Their availability involves,
92 potentially, costly calculations or memory consumptions. The default is then
93 a void list, none of these variables being calculated and stored by default
94 (excepted the unconditional variables). The possible names are in the
95 following list (the detailed description of each named variable is given in
96 the following part of this specific algorithmic documentation, in the
97 sub-section "*Information and variables available at the end of the
101 "SimulatedObservationAtCurrentState",
105 ``{"StoreSupplementaryCalculations":["CurrentState", "Residu"]}``
107 .. ------------------------------------ ..
108 .. include:: snippets/Header2Algo04.rst
110 .. include:: snippets/Residu.rst
112 .. ------------------------------------ ..
113 .. include:: snippets/Header2Algo05.rst
115 .. include:: snippets/CurrentState.rst
117 .. include:: snippets/Residu.rst
119 .. include:: snippets/SimulatedObservationAtCurrentState.rst
121 .. ------------------------------------ ..
122 .. _section_ref_algorithm_AdjointTest_examples:
124 .. include:: snippets/Header2Algo09.rst
126 .. include:: scripts/simple_AdjointTest.rst
128 .. literalinclude:: scripts/simple_AdjointTest.py
130 .. include:: snippets/Header2Algo10.rst
132 .. literalinclude:: scripts/simple_AdjointTest.res
135 .. ------------------------------------ ..
136 .. include:: snippets/Header2Algo06.rst
138 - :ref:`section_ref_algorithm_FunctionTest`
139 - :ref:`section_ref_algorithm_LinearityTest`
140 - :ref:`section_ref_algorithm_TangentTest`
141 - :ref:`section_ref_algorithm_GradientTest`
142 - :ref:`section_ref_algorithm_LocalSensitivityTest`