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<html><head><title>dlib C++ Library - global_function_search.h</title></head><body bgcolor='white'><pre> |
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<font color='#009900'>// Copyright (C) 2017 Davis E. King ([email protected]) |
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</font><font color='#009900'>// License: Boost Software License See LICENSE.txt for the full license. |
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</font><font color='#0000FF'>#ifndef</font> DLIB_GLOBAL_FuNCTION_SEARCH_Hh_ |
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<font color='#0000FF'>#define</font> DLIB_GLOBAL_FuNCTION_SEARCH_Hh_ |
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<font color='#0000FF'>#include</font> "<a style='text-decoration:none' href='global_function_search_abstract.h.html'>global_function_search_abstract.h</a>" |
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<font color='#0000FF'>#include</font> <font color='#5555FF'><</font>vector<font color='#5555FF'>></font> |
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<font color='#0000FF'>#include</font> "<a style='text-decoration:none' href='../matrix.h.html'>../matrix.h</a>" |
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<font color='#0000FF'>#include</font> <font color='#5555FF'><</font>mutex<font color='#5555FF'>></font> |
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<font color='#0000FF'>#include</font> "<a style='text-decoration:none' href='../rand.h.html'>../rand.h</a>" |
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<font color='#0000FF'>#include</font> "<a style='text-decoration:none' href='upper_bound_function.h.html'>upper_bound_function.h</a>" |
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<font color='#0000FF'>#include</font> "<a style='text-decoration:none' href='../test_for_odr_violations.h.html'>../test_for_odr_violations.h</a>" |
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<font color='#0000FF'>namespace</font> dlib |
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<b>{</b> |
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<font color='#009900'>// ---------------------------------------------------------------------------------------- |
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</font> |
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<font color='#0000FF'>struct</font> <b><a name='function_spec'></a>function_spec</b> |
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<b>{</b> |
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<b><a name='function_spec'></a>function_spec</b><font face='Lucida Console'>(</font> |
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matrix<font color='#5555FF'><</font><font color='#0000FF'><u>double</u></font>,<font color='#979000'>0</font>,<font color='#979000'>1</font><font color='#5555FF'>></font> bound1, |
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matrix<font color='#5555FF'><</font><font color='#0000FF'><u>double</u></font>,<font color='#979000'>0</font>,<font color='#979000'>1</font><font color='#5555FF'>></font> bound2 |
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<font face='Lucida Console'>)</font>; |
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<b><a name='function_spec'></a>function_spec</b><font face='Lucida Console'>(</font> |
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matrix<font color='#5555FF'><</font><font color='#0000FF'><u>double</u></font>,<font color='#979000'>0</font>,<font color='#979000'>1</font><font color='#5555FF'>></font> bound1, |
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matrix<font color='#5555FF'><</font><font color='#0000FF'><u>double</u></font>,<font color='#979000'>0</font>,<font color='#979000'>1</font><font color='#5555FF'>></font> bound2, |
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std::vector<font color='#5555FF'><</font><font color='#0000FF'><u>bool</u></font><font color='#5555FF'>></font> is_integer |
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<font face='Lucida Console'>)</font>; |
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matrix<font color='#5555FF'><</font><font color='#0000FF'><u>double</u></font>,<font color='#979000'>0</font>,<font color='#979000'>1</font><font color='#5555FF'>></font> lower; |
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matrix<font color='#5555FF'><</font><font color='#0000FF'><u>double</u></font>,<font color='#979000'>0</font>,<font color='#979000'>1</font><font color='#5555FF'>></font> upper; |
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std::vector<font color='#5555FF'><</font><font color='#0000FF'><u>bool</u></font><font color='#5555FF'>></font> is_integer_variable; |
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<b>}</b>; |
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<font color='#009900'>// ---------------------------------------------------------------------------------------- |
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</font> |
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<font color='#0000FF'>namespace</font> gopt_impl |
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<b>{</b> |
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<font color='#0000FF'>struct</font> <b><a name='outstanding_function_eval_request'></a>outstanding_function_eval_request</b> |
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<b>{</b> |
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<font color='#0000FF'><u>size_t</u></font> request_id <font color='#5555FF'>=</font> <font color='#979000'>0</font>; <font color='#009900'>// unique id for this eval request |
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</font> matrix<font color='#5555FF'><</font><font color='#0000FF'><u>double</u></font>,<font color='#979000'>0</font>,<font color='#979000'>1</font><font color='#5555FF'>></font> x; <font color='#009900'>// function x to evaluate |
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</font> |
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<font color='#009900'>// trust region specific stuff |
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</font> <font color='#0000FF'><u>bool</u></font> was_trust_region_generated_request <font color='#5555FF'>=</font> <font color='#979000'>false</font>; |
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<font color='#0000FF'><u>double</u></font> predicted_improvement <font color='#5555FF'>=</font> std::numeric_limits<font color='#5555FF'><</font><font color='#0000FF'><u>double</u></font><font color='#5555FF'>></font>::<b><a name='quiet_NaN'></a>quiet_NaN</b><font face='Lucida Console'>(</font><font face='Lucida Console'>)</font>; |
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<font color='#0000FF'><u>double</u></font> anchor_objective_value <font color='#5555FF'>=</font> std::numeric_limits<font color='#5555FF'><</font><font color='#0000FF'><u>double</u></font><font color='#5555FF'>></font>::<b><a name='quiet_NaN'></a>quiet_NaN</b><font face='Lucida Console'>(</font><font face='Lucida Console'>)</font>; <font color='#009900'>// objective value at center of TR step |
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</font> |
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<font color='#0000FF'><u>bool</u></font> <b><a name='operator'></a>operator</b><font color='#5555FF'>=</font><font color='#5555FF'>=</font><font face='Lucida Console'>(</font><font color='#0000FF'>const</font> outstanding_function_eval_request<font color='#5555FF'>&</font> item<font face='Lucida Console'>)</font> <font color='#0000FF'>const</font> <b>{</b> <font color='#0000FF'>return</font> request_id <font color='#5555FF'>=</font><font color='#5555FF'>=</font> item.request_id; <b>}</b> |
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<b>}</b>; |
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<font color='#0000FF'>struct</font> <b><a name='funct_info'></a>funct_info</b> |
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<b>{</b> |
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<b><a name='funct_info'></a>funct_info</b><font face='Lucida Console'>(</font><font face='Lucida Console'>)</font> <font color='#5555FF'>=</font> <font color='#0000FF'>delete</font>; |
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<b><a name='funct_info'></a>funct_info</b><font face='Lucida Console'>(</font><font color='#0000FF'>const</font> funct_info<font color='#5555FF'>&</font><font face='Lucida Console'>)</font> <font color='#5555FF'>=</font> <font color='#0000FF'>delete</font>; |
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funct_info<font color='#5555FF'>&</font> <b><a name='operator'></a>operator</b><font color='#5555FF'>=</font><font face='Lucida Console'>(</font><font color='#0000FF'>const</font> funct_info<font color='#5555FF'>&</font><font face='Lucida Console'>)</font> <font color='#5555FF'>=</font> <font color='#0000FF'>delete</font>; |
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<b><a name='funct_info'></a>funct_info</b><font face='Lucida Console'>(</font> |
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<font color='#0000FF'>const</font> function_spec<font color='#5555FF'>&</font> spec, |
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<font color='#0000FF'><u>size_t</u></font> function_idx, |
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<font color='#0000FF'>const</font> std::shared_ptr<font color='#5555FF'><</font>std::mutex<font color='#5555FF'>></font><font color='#5555FF'>&</font> m |
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<font face='Lucida Console'>)</font> : |
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spec<font face='Lucida Console'>(</font>spec<font face='Lucida Console'>)</font>, function_idx<font face='Lucida Console'>(</font>function_idx<font face='Lucida Console'>)</font>, m<font face='Lucida Console'>(</font>m<font face='Lucida Console'>)</font> |
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<b>{</b> |
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best_x <font color='#5555FF'>=</font> <font color='#BB00BB'>zeros_matrix</font><font face='Lucida Console'>(</font>spec.lower<font face='Lucida Console'>)</font>; |
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<b>}</b> |
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upper_bound_function <b><a name='build_upper_bound_with_all_function_evals'></a>build_upper_bound_with_all_function_evals</b> <font face='Lucida Console'>(</font> |
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<font face='Lucida Console'>)</font> <font color='#0000FF'>const</font>; |
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<font color='#0000FF'>static</font> <font color='#0000FF'><u>double</u></font> <b><a name='find_nn'></a>find_nn</b> <font face='Lucida Console'>(</font> |
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<font color='#0000FF'>const</font> std::vector<font color='#5555FF'><</font>function_evaluation<font color='#5555FF'>></font><font color='#5555FF'>&</font> evals, |
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<font color='#0000FF'>const</font> matrix<font color='#5555FF'><</font><font color='#0000FF'><u>double</u></font>,<font color='#979000'>0</font>,<font color='#979000'>1</font><font color='#5555FF'>></font><font color='#5555FF'>&</font> x |
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<font face='Lucida Console'>)</font>; |
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function_spec spec; |
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<font color='#0000FF'><u>size_t</u></font> function_idx <font color='#5555FF'>=</font> <font color='#979000'>0</font>; |
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std::shared_ptr<font color='#5555FF'><</font>std::mutex<font color='#5555FF'>></font> m; |
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upper_bound_function ub; |
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std::vector<font color='#5555FF'><</font>outstanding_function_eval_request<font color='#5555FF'>></font> outstanding_evals; |
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matrix<font color='#5555FF'><</font><font color='#0000FF'><u>double</u></font>,<font color='#979000'>0</font>,<font color='#979000'>1</font><font color='#5555FF'>></font> best_x; |
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<font color='#0000FF'><u>double</u></font> best_objective_value <font color='#5555FF'>=</font> <font color='#5555FF'>-</font>std::numeric_limits<font color='#5555FF'><</font><font color='#0000FF'><u>double</u></font><font color='#5555FF'>></font>::<b><a name='infinity'></a>infinity</b><font face='Lucida Console'>(</font><font face='Lucida Console'>)</font>; |
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<font color='#0000FF'><u>double</u></font> radius <font color='#5555FF'>=</font> <font color='#979000'>0</font>; |
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<b>}</b>; |
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<b>}</b> |
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<font color='#009900'>// ---------------------------------------------------------------------------------------- |
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</font> |
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<font color='#0000FF'>class</font> <b><a name='function_evaluation_request'></a>function_evaluation_request</b> |
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<b>{</b> |
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<font color='#0000FF'>public</font>: |
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<b><a name='function_evaluation_request'></a>function_evaluation_request</b><font face='Lucida Console'>(</font><font face='Lucida Console'>)</font> <font color='#5555FF'>=</font> <font color='#0000FF'>delete</font>; |
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<b><a name='function_evaluation_request'></a>function_evaluation_request</b><font face='Lucida Console'>(</font><font color='#0000FF'>const</font> function_evaluation_request<font color='#5555FF'>&</font><font face='Lucida Console'>)</font> <font color='#5555FF'>=</font> <font color='#0000FF'>delete</font>; |
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function_evaluation_request<font color='#5555FF'>&</font> <b><a name='operator'></a>operator</b><font color='#5555FF'>=</font><font face='Lucida Console'>(</font><font color='#0000FF'>const</font> function_evaluation_request<font color='#5555FF'>&</font><font face='Lucida Console'>)</font> <font color='#5555FF'>=</font> <font color='#0000FF'>delete</font>; |
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<b><a name='function_evaluation_request'></a>function_evaluation_request</b><font face='Lucida Console'>(</font>function_evaluation_request<font color='#5555FF'>&</font><font color='#5555FF'>&</font> item<font face='Lucida Console'>)</font>; |
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function_evaluation_request<font color='#5555FF'>&</font> <b><a name='operator'></a>operator</b><font color='#5555FF'>=</font><font face='Lucida Console'>(</font>function_evaluation_request<font color='#5555FF'>&</font><font color='#5555FF'>&</font> item<font face='Lucida Console'>)</font>; |
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~<b><a name='function_evaluation_request'></a>function_evaluation_request</b><font face='Lucida Console'>(</font><font face='Lucida Console'>)</font>; |
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<font color='#0000FF'><u>size_t</u></font> <b><a name='function_idx'></a>function_idx</b> <font face='Lucida Console'>(</font> |
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<font face='Lucida Console'>)</font> <font color='#0000FF'>const</font>; |
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<font color='#0000FF'>const</font> matrix<font color='#5555FF'><</font><font color='#0000FF'><u>double</u></font>,<font color='#979000'>0</font>,<font color='#979000'>1</font><font color='#5555FF'>></font><font color='#5555FF'>&</font> <b><a name='x'></a>x</b> <font face='Lucida Console'>(</font> |
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<font face='Lucida Console'>)</font> <font color='#0000FF'>const</font>; |
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<font color='#0000FF'><u>bool</u></font> <b><a name='has_been_evaluated'></a>has_been_evaluated</b> <font face='Lucida Console'>(</font> |
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<font face='Lucida Console'>)</font> <font color='#0000FF'>const</font>; |
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<font color='#0000FF'><u>void</u></font> <b><a name='set'></a>set</b> <font face='Lucida Console'>(</font> |
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<font color='#0000FF'><u>double</u></font> y |
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<font face='Lucida Console'>)</font>; |
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<font color='#0000FF'><u>void</u></font> <b><a name='swap'></a>swap</b><font face='Lucida Console'>(</font>function_evaluation_request<font color='#5555FF'>&</font> item<font face='Lucida Console'>)</font>; |
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<font color='#0000FF'>private</font>: |
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<font color='#0000FF'>friend</font> <font color='#0000FF'>class</font> global_function_search; |
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<font color='#0000FF'>explicit</font> <b><a name='function_evaluation_request'></a>function_evaluation_request</b><font face='Lucida Console'>(</font> |
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<font color='#0000FF'>const</font> gopt_impl::outstanding_function_eval_request<font color='#5555FF'>&</font> req, |
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<font color='#0000FF'>const</font> std::shared_ptr<font color='#5555FF'><</font>gopt_impl::funct_info<font color='#5555FF'>></font><font color='#5555FF'>&</font> info |
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<font face='Lucida Console'>)</font> : req<font face='Lucida Console'>(</font>req<font face='Lucida Console'>)</font>, info<font face='Lucida Console'>(</font>info<font face='Lucida Console'>)</font> <b>{</b><b>}</b> |
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<font color='#0000FF'><u>bool</u></font> m_has_been_evaluated <font color='#5555FF'>=</font> <font color='#979000'>false</font>; |
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gopt_impl::outstanding_function_eval_request req; |
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std::shared_ptr<font color='#5555FF'><</font>gopt_impl::funct_info<font color='#5555FF'>></font> info; |
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<b>}</b>; |
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<font color='#009900'>// ---------------------------------------------------------------------------------------- |
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</font> |
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<font color='#0000FF'>class</font> <b><a name='global_function_search'></a>global_function_search</b> |
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<b>{</b> |
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<font color='#0000FF'>public</font>: |
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<b><a name='global_function_search'></a>global_function_search</b><font face='Lucida Console'>(</font><font face='Lucida Console'>)</font> <font color='#5555FF'>=</font> <font color='#0000FF'>default</font>; |
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<font color='#0000FF'>explicit</font> <b><a name='global_function_search'></a>global_function_search</b><font face='Lucida Console'>(</font> |
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<font color='#0000FF'>const</font> function_spec<font color='#5555FF'>&</font> function |
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<font face='Lucida Console'>)</font>; |
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<font color='#0000FF'>explicit</font> <b><a name='global_function_search'></a>global_function_search</b><font face='Lucida Console'>(</font> |
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<font color='#0000FF'>const</font> std::vector<font color='#5555FF'><</font>function_spec<font color='#5555FF'>></font><font color='#5555FF'>&</font> functions_ |
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<font face='Lucida Console'>)</font>; |
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<b><a name='global_function_search'></a>global_function_search</b><font face='Lucida Console'>(</font> |
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<font color='#0000FF'>const</font> std::vector<font color='#5555FF'><</font>function_spec<font color='#5555FF'>></font><font color='#5555FF'>&</font> functions_, |
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<font color='#0000FF'>const</font> std::vector<font color='#5555FF'><</font>std::vector<font color='#5555FF'><</font>function_evaluation<font color='#5555FF'>></font><font color='#5555FF'>></font><font color='#5555FF'>&</font> initial_function_evals, |
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<font color='#0000FF'>const</font> <font color='#0000FF'><u>double</u></font> relative_noise_magnitude <font color='#5555FF'>=</font> <font color='#979000'>0.001</font> |
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<font face='Lucida Console'>)</font>; |
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<b><a name='global_function_search'></a>global_function_search</b><font face='Lucida Console'>(</font><font color='#0000FF'>const</font> global_function_search<font color='#5555FF'>&</font><font face='Lucida Console'>)</font> <font color='#5555FF'>=</font> <font color='#0000FF'>delete</font>; |
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global_function_search<font color='#5555FF'>&</font> <b><a name='operator'></a>operator</b><font color='#5555FF'>=</font><font face='Lucida Console'>(</font><font color='#0000FF'>const</font> global_function_search<font color='#5555FF'>&</font> item<font face='Lucida Console'>)</font> <font color='#5555FF'>=</font> <font color='#0000FF'>delete</font>; |
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<b><a name='global_function_search'></a>global_function_search</b><font face='Lucida Console'>(</font>global_function_search<font color='#5555FF'>&</font><font color='#5555FF'>&</font> item<font face='Lucida Console'>)</font> <font color='#5555FF'>=</font> <font color='#0000FF'>default</font>; |
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global_function_search<font color='#5555FF'>&</font> <b><a name='operator'></a>operator</b><font color='#5555FF'>=</font><font face='Lucida Console'>(</font>global_function_search<font color='#5555FF'>&</font><font color='#5555FF'>&</font> item<font face='Lucida Console'>)</font> <font color='#5555FF'>=</font> <font color='#0000FF'>default</font>; |
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<font color='#0000FF'><u>size_t</u></font> <b><a name='num_functions'></a>num_functions</b><font face='Lucida Console'>(</font> |
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<font face='Lucida Console'>)</font> <font color='#0000FF'>const</font>; |
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<font color='#0000FF'><u>void</u></font> <b><a name='set_seed'></a>set_seed</b> <font face='Lucida Console'>(</font> |
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time_t seed |
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<font face='Lucida Console'>)</font>; |
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<font color='#0000FF'><u>void</u></font> <b><a name='get_function_evaluations'></a>get_function_evaluations</b> <font face='Lucida Console'>(</font> |
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std::vector<font color='#5555FF'><</font>function_spec<font color='#5555FF'>></font><font color='#5555FF'>&</font> specs, |
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std::vector<font color='#5555FF'><</font>std::vector<font color='#5555FF'><</font>function_evaluation<font color='#5555FF'>></font><font color='#5555FF'>></font><font color='#5555FF'>&</font> function_evals |
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<font face='Lucida Console'>)</font> <font color='#0000FF'>const</font>; |
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<font color='#0000FF'><u>void</u></font> <b><a name='get_best_function_eval'></a>get_best_function_eval</b> <font face='Lucida Console'>(</font> |
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matrix<font color='#5555FF'><</font><font color='#0000FF'><u>double</u></font>,<font color='#979000'>0</font>,<font color='#979000'>1</font><font color='#5555FF'>></font><font color='#5555FF'>&</font> x, |
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<font color='#0000FF'><u>double</u></font><font color='#5555FF'>&</font> y, |
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<font color='#0000FF'><u>size_t</u></font><font color='#5555FF'>&</font> function_idx |
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<font face='Lucida Console'>)</font> <font color='#0000FF'>const</font>; |
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function_evaluation_request <b><a name='get_next_x'></a>get_next_x</b> <font face='Lucida Console'>(</font> |
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<font face='Lucida Console'>)</font>; |
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<font color='#0000FF'><u>double</u></font> <b><a name='get_pure_random_search_probability'></a>get_pure_random_search_probability</b> <font face='Lucida Console'>(</font> |
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<font face='Lucida Console'>)</font> <font color='#0000FF'>const</font>; |
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<font color='#0000FF'><u>void</u></font> <b><a name='set_pure_random_search_probability'></a>set_pure_random_search_probability</b> <font face='Lucida Console'>(</font> |
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<font color='#0000FF'><u>double</u></font> prob |
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<font face='Lucida Console'>)</font>; |
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<font color='#0000FF'><u>double</u></font> <b><a name='get_solver_epsilon'></a>get_solver_epsilon</b> <font face='Lucida Console'>(</font> |
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<font face='Lucida Console'>)</font> <font color='#0000FF'>const</font>; |
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<font color='#0000FF'><u>void</u></font> <b><a name='set_solver_epsilon'></a>set_solver_epsilon</b> <font face='Lucida Console'>(</font> |
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<font color='#0000FF'><u>double</u></font> eps |
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<font face='Lucida Console'>)</font>; |
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<font color='#0000FF'><u>double</u></font> <b><a name='get_relative_noise_magnitude'></a>get_relative_noise_magnitude</b> <font face='Lucida Console'>(</font> |
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<font face='Lucida Console'>)</font> <font color='#0000FF'>const</font>; |
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<font color='#0000FF'><u>void</u></font> <b><a name='set_relative_noise_magnitude'></a>set_relative_noise_magnitude</b> <font face='Lucida Console'>(</font> |
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<font color='#0000FF'><u>double</u></font> value |
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<font face='Lucida Console'>)</font>; |
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<font color='#0000FF'><u>size_t</u></font> <b><a name='get_monte_carlo_upper_bound_sample_num'></a>get_monte_carlo_upper_bound_sample_num</b> <font face='Lucida Console'>(</font> |
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<font face='Lucida Console'>)</font> <font color='#0000FF'>const</font>; |
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<font color='#0000FF'><u>void</u></font> <b><a name='set_monte_carlo_upper_bound_sample_num'></a>set_monte_carlo_upper_bound_sample_num</b> <font face='Lucida Console'>(</font> |
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<font color='#0000FF'><u>size_t</u></font> num |
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<font face='Lucida Console'>)</font>; |
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<font color='#0000FF'>private</font>: |
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std::shared_ptr<font color='#5555FF'><</font>gopt_impl::funct_info<font color='#5555FF'>></font> <b><a name='best_function'></a>best_function</b><font face='Lucida Console'>(</font> |
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<font face='Lucida Console'>)</font> <font color='#0000FF'>const</font>; |
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std::shared_ptr<font color='#5555FF'><</font>gopt_impl::funct_info<font color='#5555FF'>></font> <b><a name='best_function'></a>best_function</b><font face='Lucida Console'>(</font> |
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<font color='#0000FF'><u>size_t</u></font><font color='#5555FF'>&</font> idx |
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<font face='Lucida Console'>)</font> <font color='#0000FF'>const</font>; |
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<font color='#0000FF'><u>bool</u></font> <b><a name='has_outstanding_trust_region_request'></a>has_outstanding_trust_region_request</b> <font face='Lucida Console'>(</font> |
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<font face='Lucida Console'>)</font> <font color='#0000FF'>const</font>; |
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dlib::rand rnd; |
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<font color='#0000FF'><u>double</u></font> pure_random_search_probability <font color='#5555FF'>=</font> <font color='#979000'>0.02</font>; |
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<font color='#0000FF'><u>double</u></font> min_trust_region_epsilon <font color='#5555FF'>=</font> <font color='#979000'>0</font>; |
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<font color='#0000FF'><u>double</u></font> relative_noise_magnitude <font color='#5555FF'>=</font> <font color='#979000'>0.001</font>; |
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<font color='#0000FF'><u>size_t</u></font> num_random_samples <font color='#5555FF'>=</font> <font color='#979000'>5000</font>; |
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<font color='#0000FF'><u>bool</u></font> do_trust_region_step <font color='#5555FF'>=</font> <font color='#979000'>true</font>; |
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<font color='#0000FF'><u>size_t</u></font> next_request_id <font color='#5555FF'>=</font> <font color='#979000'>1</font>; |
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std::vector<font color='#5555FF'><</font>std::shared_ptr<font color='#5555FF'><</font>gopt_impl::funct_info<font color='#5555FF'>></font><font color='#5555FF'>></font> functions; |
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std::shared_ptr<font color='#5555FF'><</font>std::mutex<font color='#5555FF'>></font> m; |
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<b>}</b>; |
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<font color='#009900'>// ---------------------------------------------------------------------------------------- |
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</font> |
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<b>}</b> |
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<font color='#0000FF'>#endif</font> <font color='#009900'>// DLIB_GLOBAL_FuNCTION_SEARCH_Hh_ |
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</font> |
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</pre></body></html> |
