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<title>Genetic Algorithm Library: Population::ScalingOperations::GaLinearScaling Class Reference</title>
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<div class="navpath"><a class="el" href="namespace_population.html">Population</a>::<a class="el" href="namespace_population_1_1_scaling_operations.html">ScalingOperations</a>::<a class="el" href="class_population_1_1_scaling_operations_1_1_ga_linear_scaling.html">GaLinearScaling</a>
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<h1>Population::ScalingOperations::GaLinearScaling Class Reference</h1><!-- doxytag: class="Population::ScalingOperations::GaLinearScaling" --><!-- doxytag: inherits="Population::GaScalingOperation" --><code><a class="el" href="class_population_1_1_scaling_operations_1_1_ga_linear_scaling.html" title="GaLinearScaling operation calculates scaled fitness value of chromosome by applying...">GaLinearScaling</a></code> operation calculates scaled fitness value of chromosome by applying linear function <code>a * f + b</code> fitness value, to where a and b are calculated from scale factor which is provided in operation parameters. This scaling operation is not based on ranking of chromosome and use GaScaleFactor class for parameters.
<a href="#_details">More...</a>
<p>
<code>#include <source/ScalingOperations.h></code>
<p>
Inherits <a class="el" href="class_population_1_1_ga_scaling_operation.html">Population::GaScalingOperation</a>.
<p>
<p>
<a href="class_population_1_1_scaling_operations_1_1_ga_linear_scaling-members.html">List of all members.</a><table border="0" cellpadding="0" cellspacing="0">
<tr><td></td></tr>
<tr><td colspan="2"><br><h2>Public Member Functions</h2></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">virtual GAL_API float GACALL </td><td class="memItemRight" valign="bottom"><a class="el" href="class_population_1_1_scaling_operations_1_1_ga_linear_scaling.html#48d9d1f3e895974f4b8376f842bec673">operator()</a> (const <a class="el" href="class_chromosome_1_1_ga_scaled_chromosome.html">GaScaledChromosome</a> &chromosome, const <a class="el" href="class_population_1_1_ga_population.html">GaPopulation</a> &population, const <a class="el" href="class_population_1_1_ga_scaling_params.html">GaScalingParams</a> &parameters) const </td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">More details are given in specification of GaScalingOperation::operator () method. <a href="#48d9d1f3e895974f4b8376f842bec673"></a><br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">virtual bool GACALL </td><td class="memItemRight" valign="bottom"><a class="el" href="class_population_1_1_scaling_operations_1_1_ga_linear_scaling.html#7bb4a3940b2908b41af1f12d3a8566e8">IsRankingBased</a> () const </td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">More details are given in specification of <a class="el" href="class_population_1_1_ga_scaling_operation.html#715be1b117b5856dae87b60df9b368ab" title="IsRankingBased method should return true if scaling of fitness value is based on...">GaScalingOperation::IsRankingBased</a> method. <a href="#7bb4a3940b2908b41af1f12d3a8566e8"></a><br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">virtual GAL_API bool GACALL </td><td class="memItemRight" valign="bottom"><a class="el" href="class_population_1_1_scaling_operations_1_1_ga_linear_scaling.html#05583f9f487a4494e5896531171c5443">NeedRescaling</a> (const <a class="el" href="class_population_1_1_ga_population.html">GaPopulation</a> &population, const <a class="el" href="class_population_1_1_ga_scaling_params.html">GaScalingParams</a> &parameters) const </td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">More details are given in specification of <a class="el" href="class_population_1_1_ga_scaling_operation.html#592fce6744bf6586ea795001f33e6f86" title="NeedRescaling method checks current population for consistence of chromosomes'...">GaScalingOperation::NeedRescaling</a> method. <a href="#05583f9f487a4494e5896531171c5443"></a><br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">virtual <a class="el" href="class_common_1_1_ga_parameters.html">GaParameters</a> *GACALL </td><td class="memItemRight" valign="bottom"><a class="el" href="class_population_1_1_scaling_operations_1_1_ga_linear_scaling.html#e86fca8dcd6855971fc70729b50f9230">MakeParameters</a> () const </td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">More details are given in specification of GaOperation::MakeParameters method. <a href="#e86fca8dcd6855971fc70729b50f9230"></a><br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">virtual bool GACALL </td><td class="memItemRight" valign="bottom"><a class="el" href="class_population_1_1_scaling_operations_1_1_ga_linear_scaling.html#386b20eecc8b26bb4340687fda48d0d5">CheckParameters</a> (const <a class="el" href="class_common_1_1_ga_parameters.html">GaParameters</a> &parameters) const </td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">More details are given in specification of GaOperation::CheckParameters method. <a href="#386b20eecc8b26bb4340687fda48d0d5"></a><br></td></tr>
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<hr><a name="_details"></a><h2>Detailed Description</h2>
<code><a class="el" href="class_population_1_1_scaling_operations_1_1_ga_linear_scaling.html" title="GaLinearScaling operation calculates scaled fitness value of chromosome by applying...">GaLinearScaling</a></code> operation calculates scaled fitness value of chromosome by applying linear function <code>a * f + b</code> fitness value, to where a and b are calculated from scale factor which is provided in operation parameters. This scaling operation is not based on ranking of chromosome and use GaScaleFactor class for parameters.
<p>
This class has no built-in synchronizator, so <code>LOCK_OBJECT</code> and <code>LOCK_THIS_OBJECT</code> macros cannot be used with instances of this class. Because this genetic operation is stateless all public method are thread-safe. <hr><h2>Member Function Documentation</h2>
<a class="anchor" name="48d9d1f3e895974f4b8376f842bec673"></a><!-- doxytag: member="Population::ScalingOperations::GaLinearScaling::operator()" ref="48d9d1f3e895974f4b8376f842bec673" args="(const GaScaledChromosome &chromosome, const GaPopulation &population, const GaScalingParams &parameters) const " -->
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<td class="memname">float Population::ScalingOperations::GaLinearScaling::operator() </td>
<td>(</td>
<td class="paramtype">const <a class="el" href="class_chromosome_1_1_ga_scaled_chromosome.html">GaScaledChromosome</a> & </td>
<td class="paramname"> <em>chromosome</em>, </td>
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<td class="paramkey"></td>
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<td class="paramtype">const <a class="el" href="class_population_1_1_ga_population.html">GaPopulation</a> & </td>
<td class="paramname"> <em>population</em>, </td>
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<td class="paramkey"></td>
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<td class="paramtype">const <a class="el" href="class_population_1_1_ga_scaling_params.html">GaScalingParams</a> & </td>
<td class="paramname"> <em>parameters</em></td><td> </td>
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<td></td>
<td>)</td>
<td></td><td></td><td width="100%"> const<code> [virtual]</code></td>
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More details are given in specification of GaScalingOperation::operator () method.
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This method is thread-safe.
<p>Implements <a class="el" href="class_population_1_1_ga_scaling_operation.html#308d39177c6c075f6a8d8a8d16ff52b5">Population::GaScalingOperation</a>.</p>
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<a class="anchor" name="7bb4a3940b2908b41af1f12d3a8566e8"></a><!-- doxytag: member="Population::ScalingOperations::GaLinearScaling::IsRankingBased" ref="7bb4a3940b2908b41af1f12d3a8566e8" args="() const " -->
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<td class="memname">virtual bool GACALL Population::ScalingOperations::GaLinearScaling::IsRankingBased </td>
<td>(</td>
<td class="paramname"> </td>
<td> ) </td>
<td width="100%"> const<code> [inline, virtual]</code></td>
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<div class="memdoc">
<p>
More details are given in specification of <a class="el" href="class_population_1_1_ga_scaling_operation.html#715be1b117b5856dae87b60df9b368ab" title="IsRankingBased method should return true if scaling of fitness value is based on...">GaScalingOperation::IsRankingBased</a> method.
<p>
This method is thread-safe. <dl class="return" compact><dt><b>Returns:</b></dt><dd>This method returns <code>false</code>.</dd></dl>
<p>Implements <a class="el" href="class_population_1_1_ga_scaling_operation.html#715be1b117b5856dae87b60df9b368ab">Population::GaScalingOperation</a>.</p>
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<a class="anchor" name="05583f9f487a4494e5896531171c5443"></a><!-- doxytag: member="Population::ScalingOperations::GaLinearScaling::NeedRescaling" ref="05583f9f487a4494e5896531171c5443" args="(const GaPopulation &population, const GaScalingParams &parameters) const " -->
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<td class="memname">bool Population::ScalingOperations::GaLinearScaling::NeedRescaling </td>
<td>(</td>
<td class="paramtype">const <a class="el" href="class_population_1_1_ga_population.html">GaPopulation</a> & </td>
<td class="paramname"> <em>population</em>, </td>
</tr>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype">const <a class="el" href="class_population_1_1_ga_scaling_params.html">GaScalingParams</a> & </td>
<td class="paramname"> <em>parameters</em></td><td> </td>
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<td></td>
<td>)</td>
<td></td><td></td><td width="100%"> const<code> [virtual]</code></td>
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<p>
More details are given in specification of <a class="el" href="class_population_1_1_ga_scaling_operation.html#592fce6744bf6586ea795001f33e6f86" title="NeedRescaling method checks current population for consistence of chromosomes'...">GaScalingOperation::NeedRescaling</a> method.
<p>
This method is thread-safe. <dl class="return" compact><dt><b>Returns:</b></dt><dd>Method returns <code>true</code> if scale factor in operation parameters has changed.</dd></dl>
<p>Implements <a class="el" href="class_population_1_1_ga_scaling_operation.html#592fce6744bf6586ea795001f33e6f86">Population::GaScalingOperation</a>.</p>
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</div><p>
<a class="anchor" name="e86fca8dcd6855971fc70729b50f9230"></a><!-- doxytag: member="Population::ScalingOperations::GaLinearScaling::MakeParameters" ref="e86fca8dcd6855971fc70729b50f9230" args="() const " -->
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<td class="memname">virtual <a class="el" href="class_common_1_1_ga_parameters.html">GaParameters</a>* GACALL Population::ScalingOperations::GaLinearScaling::MakeParameters </td>
<td>(</td>
<td class="paramname"> </td>
<td> ) </td>
<td width="100%"> const<code> [inline, virtual]</code></td>
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<p>
More details are given in specification of GaOperation::MakeParameters method.
<p>
This method is thread-safe. <dl class="return" compact><dt><b>Returns:</b></dt><dd>Method returns new instance of <a class="el" href="class_population_1_1_scaling_operations_1_1_ga_scale_factor_params.html" title="This class should be used (directly or by inheritance) by scaling operations which...">GaScaleFactorParams</a> class.</dd></dl>
<p>Implements <a class="el" href="class_common_1_1_ga_operation.html#7da19e41bc86254ea540a55a09384023">Common::GaOperation</a>.</p>
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</div><p>
<a class="anchor" name="386b20eecc8b26bb4340687fda48d0d5"></a><!-- doxytag: member="Population::ScalingOperations::GaLinearScaling::CheckParameters" ref="386b20eecc8b26bb4340687fda48d0d5" args="(const GaParameters &parameters) const " -->
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<td class="memname">virtual bool GACALL Population::ScalingOperations::GaLinearScaling::CheckParameters </td>
<td>(</td>
<td class="paramtype">const <a class="el" href="class_common_1_1_ga_parameters.html">GaParameters</a> & </td>
<td class="paramname"> <em>parameters</em> </td>
<td> ) </td>
<td width="100%"> const<code> [inline, virtual]</code></td>
</tr>
</table>
</div>
<div class="memdoc">
<p>
More details are given in specification of GaOperation::CheckParameters method.
<p>
This method is thread-safe. <dl class="return" compact><dt><b>Returns:</b></dt><dd>Method always returns <code>true</code>.</dd></dl>
<p>Implements <a class="el" href="class_common_1_1_ga_operation.html#43b1b5c6a68418b09ec1ac04663d02b6">Common::GaOperation</a>.</p>
</div>
</div><p>
<hr>The documentation for this class was generated from the following files:<ul>
<li>source/<a class="el" href="_scaling_operations_8h.html">ScalingOperations.h</a><li>source/<a class="el" href="_scaling_operations_8cpp.html">ScalingOperations.cpp</a></ul>
</div>
<br/><a href="http://www.coolsoft-sd.com/ProductVersion.aspx?vid=9">Genetic Algorithm Library</a><br/><a href="http://www.coolsoft-sd.com/">Coolsoft Software Development</a>
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