https://sourceforge.net/p/ugp3/wiki/Individuals/Recent changes to IndividualsenMon, 08 Jun 2015 14:37:29 -0000https://sourceforge.net/p/ugp3/wiki/Individuals/<div class="markdown_content"><pre>--- v1 +++ v2 @@ -10,7 +10,7 @@  -References may exist from one node to the other inside the same subsection, or from one subsection to a different one (even in different sections). For more information, see [innerLabel and outerLabel parameters](https://sourceforge.net/p/ugp3/wiki/Macro#Inter-section References). +References may exist from one node to the other inside the same subsection, or from one subsection to a different one (even in different sections). For more information, see innerLabel and outerLabel parameters in the [Macro page](https://sourceforge.net/p/ugp3/wiki/Macro).  </pre> </div>Alberto TondaMon, 08 Jun 2015 14:37:29 -0000https://sourceforge.net7f5894455073c6549ff15a6f31c30373fb190985https://sourceforge.net/p/ugp3/wiki/Individuals/<div class="markdown_content"><p>The schema of an individual in µGP is summarized by the following figure.</p> <p><img alt="Individual structure in ugp3" src="http://ugp3.sourceforge.net/wiki/Representation-presentation.jpg" /></p> <p>The <strong>global prologue</strong> and <strong>global epilogue</strong> are two fixed parts that will appear always at the beginning and at the end of each individual.</p> <p>A <strong>section</strong> is a part that appears exactly one time, has two fixed parts that will appear at its beginning and at its end (<strong>section prologue</strong> and <strong>section epilogue</strong>) and can contain any number of subsections.</p> <p>A single <strong>subsection</strong> may appear in several instances inside a certain section. If a section contains different subsections, all instances of the first subsection will appear before all instances of the second, and so on. Each subsection also has a <strong>subsection prologue</strong> and a <strong>subsection epilogue</strong>. Inside each subsection, the user can define any number of <strong>macros</strong>, that will appear in a random order.</p> <p><img alt="Individual structure in ugp3" src="http://ugp3.sourceforge.net/wiki/Representation-presentation-2.jpg" /></p> <p>References may exist from one node to the other inside the same subsection, or from one subsection to a different one (even in different sections). For more information, see <a class="" href="https://sourceforge.net/p/ugp3/wiki/Macro#Inter-section%20References">innerLabel and outerLabel parameters</a>.</p> <p><img alt="Individual structure in ugp3" src="http://ugp3.sourceforge.net/wiki/Representation-presentation-3.jpg" /></p> <h2 id="constraints-and-graphs">Constraints and Graphs</h2> <p>There is an important conceptual distinction between individual constraints and an actual individual, which can be seen as the same distinction between a class and an instance of the same class. Individual constraints describe how individuals are shaped: how many sections, how many subsections, how many instances for each subsection, etc. A single individual conforms to the constraints, and every element inside refers to a specific part of the constraint.</p> <p>For example, an individual could have a subgraph with five nodes: nodes 1, 3 and 4 are instances of macro A described in the constraints, while node 2 is an instance of macro B and node 5 is an instance of macro C. The whole subgraph is an instance of subsection ssA.</p> <p>So, in µGP's terminology, a <strong>Graph</strong> can be seen as an instance of a <strong>Section</strong>; a <strong>SubGraph</strong> can be seen as an instance of a <strong>SubSection</strong>; and a <strong>Node</strong> can be seen as an instance of a <strong>Macro</strong>.</p></div>Alberto TondaMon, 08 Jun 2015 14:36:35 -0000https://sourceforge.netd1a8670fc3937b9e7b9c7ccbebb5677aca493c26