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<p>The Wood function, defined by f(x) = f1(x) + f2(x) + f3(x) + f4(x) + f5(x) + f6(x) f1(x) = 100 (x2 - x1^2)^2 f2(x) = (1 - x1)^2 f3(x) = 90 (x4 - x3^2)^2 f4(x) = (1 - x3)^2 f5(x) = 10 (x2 + x4 - 2)^2 f6(x) = (1 / 10) (x2 - x4)^2 x_0 = [-3, -1, -3, -1].
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<a href="classmlpack_1_1optimization_1_1test_1_1WoodFunction.html#details">More...</a></p>
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<table class="memberdecls">
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<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pub-methods"></a>
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Public Member Functions</h2></td></tr>
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<tr class="memitem:af8f9510af933ad74c46dc3f1b9403420"><td class="memItemLeft" align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="classmlpack_1_1optimization_1_1test_1_1WoodFunction.html#af8f9510af933ad74c46dc3f1b9403420">WoodFunction</a> ()</td></tr>
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<tr class="separator:af8f9510af933ad74c46dc3f1b9403420"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:ae4a71282f52adebb91b3e47c4c2f67c2"><td class="memItemLeft" align="right" valign="top">double </td><td class="memItemRight" valign="bottom"><a class="el" href="classmlpack_1_1optimization_1_1test_1_1WoodFunction.html#ae4a71282f52adebb91b3e47c4c2f67c2">Evaluate</a> (const arma::mat &coordinates)</td></tr>
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<tr class="separator:ae4a71282f52adebb91b3e47c4c2f67c2"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:a6c1ec7a0904070878e25068689db26ae"><td class="memItemLeft" align="right" valign="top">const arma::mat & </td><td class="memItemRight" valign="bottom"><a class="el" href="classmlpack_1_1optimization_1_1test_1_1WoodFunction.html#a6c1ec7a0904070878e25068689db26ae">GetInitialPoint</a> () const </td></tr>
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<tr class="separator:a6c1ec7a0904070878e25068689db26ae"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:a221c784e3dfd0fea6794df7fac92a111"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="classmlpack_1_1optimization_1_1test_1_1WoodFunction.html#a221c784e3dfd0fea6794df7fac92a111">Gradient</a> (const arma::mat &coordinates, arma::mat &gradient)</td></tr>
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<tr class="separator:a221c784e3dfd0fea6794df7fac92a111"><td class="memSeparator" colspan="2"> </td></tr>
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</table><table class="memberdecls">
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<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pri-attribs"></a>
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Private Attributes</h2></td></tr>
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<tr class="memitem:aeafb8b8f3e477eb6c97ab813db61d229"><td class="memItemLeft" align="right" valign="top">arma::mat </td><td class="memItemRight" valign="bottom"><a class="el" href="classmlpack_1_1optimization_1_1test_1_1WoodFunction.html#aeafb8b8f3e477eb6c97ab813db61d229">initialPoint</a></td></tr>
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<tr class="separator:aeafb8b8f3e477eb6c97ab813db61d229"><td class="memSeparator" colspan="2"> </td></tr>
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<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
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<div class="textblock"><p>The Wood function, defined by f(x) = f1(x) + f2(x) + f3(x) + f4(x) + f5(x) + f6(x) f1(x) = 100 (x2 - x1^2)^2 f2(x) = (1 - x1)^2 f3(x) = 90 (x4 - x3^2)^2 f4(x) = (1 - x3)^2 f5(x) = 10 (x2 + x4 - 2)^2 f6(x) = (1 / 10) (x2 - x4)^2 x_0 = [-3, -1, -3, -1]. </p>
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<p>This should optimize to f(x) = 0, at x = [1, 1, 1, 1].</p>
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<p>"A comparative study of nonlinear programming codes." A.R. Colville. 1968. Rep. 320-2949, IBM N.Y. Scientific Center. </p>
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<p>Definition at line <a class="el" href="test__functions_8hpp_source.html#l00083">83</a> of file <a class="el" href="test__functions_8hpp_source.html">test_functions.hpp</a>.</p>
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</div><h2 class="groupheader">Constructor & Destructor Documentation</h2>
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<td class="memname">mlpack::optimization::test::WoodFunction::WoodFunction </td>
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<td>(</td>
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<h2 class="groupheader">Member Function Documentation</h2>
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<td class="memname">double mlpack::optimization::test::WoodFunction::Evaluate </td>
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<td>(</td>
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<td class="paramtype">const arma::mat & </td>
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<td class="paramname"><em>coordinates</em></td><td>)</td>
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<td class="memname">const arma::mat& mlpack::optimization::test::WoodFunction::GetInitialPoint </td>
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<td>(</td>
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<td> const</td>
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<td class="memname">void mlpack::optimization::test::WoodFunction::Gradient </td>
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<td>(</td>
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<td class="paramtype">const arma::mat & </td>
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<td class="paramname"><em>coordinates</em>, </td>
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<td class="memname">arma::mat mlpack::optimization::test::WoodFunction::initialPoint</td>
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<span class="mlabels"><span class="mlabel">private</span></span> </td>
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<p>Definition at line <a class="el" href="test__functions_8hpp_source.html#l00094">94</a> of file <a class="el" href="test__functions_8hpp_source.html">test_functions.hpp</a>.</p>
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<hr/>The documentation for this class was generated from the following file:<ul>
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<li>src/mlpack/core/optimizers/lbfgs/<a class="el" href="test__functions_8hpp_source.html">test_functions.hpp</a></li>
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