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java.lang.Object | +--ec.gp.GPTree
GPTree is a GPNodeParent which holds the root GPNode of a tree of GPNodes. GPTrees typically fill out an array held in a GPIndividual (their "owner") and their roots are evaluated to evaluate a Genetic programming tree. GPTrees also have constraints, which are shared, and define items shared among several GPTrees.
GPTrees can print themselves for humans in one of two ways. First, a GPTree can print the tree as a Koza-style Lisp s-expression, which is the default. Second, a GPTree can print the tree as a LaTeX2e code snippet, which can be inserted into a LaTeX2e file and will result in a picture of the tree! Cool, no?
You turn this feature on with the latex parameter below. Here's how it works. To insert the code, you'll need to include the epic,ecltree, and probably the fancybox packages, in that order. You'll also need to define the command \gpbox, which takes one argument (the string name for the GPNode) and draws a box with that node. Lastly, you might want to set a few parameters dealing with the ecltree package.
Here's an example which looks quite good (pardon the double-backslashes in front of the usepackage statements -- javadoc is freaking out if I put a single backslash. So you'll need to remove the extra backslash in order to try out this example):
\documentclass[]{article} \\usepackage{epic} % required by ecltree and fancybox packages \\usepackage{ecltree} % to draw the GP trees \\usepackage{fancybox} % required by \Ovalbox \begin{document} % minimum distance between nodes on the same line \setlength{\GapWidth}{1em} % draw with a thick dashed line, very nice looking \thicklines \drawwith{\dottedline{2}} % draw an oval and center it with the rule. You may want to fool with the % rule values, though these seem to work quite well for me. If you make the % rule smaller than the text height, then the GP nodes may not line up with % each other horizontally quite right, so watch out. \newcommand{\gpbox}[1]{\Ovalbox{#1\rule[-.7ex]{0ex}{2.7ex}}} % Here's the tree which the GP system spat out \begin{bundle}{\gpbox{progn3}}\chunk{\begin{bundle}{\gpbox{if-food-ahead}} \chunk{\begin{bundle}{\gpbox{progn3}}\chunk{\gpbox{right}} \chunk{\gpbox{left}}\chunk{\gpbox{move}}\end{bundle}} \chunk{\begin{bundle}{\gpbox{if-food-ahead}}\chunk{\gpbox{move}} \chunk{\gpbox{left}}\end{bundle}}\end{bundle}}\chunk{\begin{bundle}{\gpbox{progn2}} \chunk{\begin{bundle}{\gpbox{progn2}}\chunk{\gpbox{move}} \chunk{\gpbox{move}}\end{bundle}}\chunk{\begin{bundle}{\gpbox{progn2}} \chunk{\gpbox{right}}\chunk{\gpbox{left}}\end{bundle}}\end{bundle}} \chunk{\begin{bundle}{\gpbox{if-food-ahead}}\chunk{\begin{bundle}{\gpbox{if-food-ahead}} \chunk{\gpbox{move}}\chunk{\gpbox{left}}\end{bundle}} \chunk{\begin{bundle}{\gpbox{if-food-ahead}}\chunk{\gpbox{left}}\chunk{\gpbox{right}} \end{bundle}}\end{bundle}}\end{bundle} \end{document} |
Parameters
base.tc String |
(The tree's constraints) |
base.latex bool = true or false (default) |
(print for humans using latex?) |
Default Base
gp.tree
Field Summary | |
GPNode |
child
the root GPNode in the GPTree |
byte |
constraints
constraints on the GPTree -- don't access the constraints through this variable -- use the constraints() method instead, which will give the actual constraints object. |
static int |
NO_TREENUM
|
GPIndividual |
owner
the owner of the GPTree |
static java.lang.String |
P_TREE
|
static java.lang.String |
P_TREECONSTRAINTS
|
static java.lang.String |
P_USELATEX
|
boolean |
useLatex
Use latex to print for humans? |
Constructor Summary | |
GPTree()
|
Method Summary | |
void |
buildTree(EvolutionState state,
int thread)
Builds a new randomly-generated rooted tree and attaches it to the GPTree. |
GPTreeConstraints |
constraints()
|
GPTree |
deepClone()
Deep-clones the tree, including all the nodes. |
Parameter |
defaultBase()
Returns the default base for this prototype. |
void |
printTree(EvolutionState state,
int log,
int verbosity)
Prints out the tree in single-line fashion suitable for reading in later by computer. |
void |
printTree(EvolutionState state,
java.io.PrintWriter writer)
Prints out the tree in single-line fashion suitable for reading in later by computer. |
void |
printTreeForHumans(EvolutionState state,
int log,
int verbosity)
Prints out the tree in a readable Lisp-like fashion. |
java.lang.Object |
protoClone()
Proto-clones the tree but does NOT deep clone it. |
java.lang.Object |
protoCloneSimple()
This should be implemented in a the top-level Prototype ONLY; in fact, it should probably be declared final. |
void |
readTree(EvolutionState state,
java.io.LineNumberReader reader)
Reads in the tree from a form printed by printTree. |
void |
setup(EvolutionState state,
Parameter base)
Sets up a prototypical GPTree with those features it shares with other GPTrees in its position in its GPIndividual, and nothhing more. |
boolean |
treeEquals(GPTree tree)
Returns true if I am "genetically" the same as tree, though we may have different owners. |
int |
treeHashCode()
Returns a hash code for comparing different GPTrees. |
int |
treeNumber()
An expensive function which determines my tree number -- only use for errors, etc. |
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Field Detail |
public static final java.lang.String P_TREE
public static final java.lang.String P_TREECONSTRAINTS
public static final java.lang.String P_USELATEX
public static final int NO_TREENUM
public GPNode child
public GPIndividual owner
public byte constraints
public boolean useLatex
Constructor Detail |
public GPTree()
Method Detail |
public final GPTreeConstraints constraints()
public Parameter defaultBase()
Prototype
defaultBase
in interface Prototype
public boolean treeEquals(GPTree tree)
public int treeHashCode()
public java.lang.Object protoClone() throws java.lang.CloneNotSupportedException
protoClone
in interface Prototype
public final java.lang.Object protoCloneSimple()
Prototype
public final Object protoCloneSimple()
{
try { return protoClone(); }
catch (CloneNotSupportedException e)
{ throw new InternalError(); } // never happens
}
protoCloneSimple
in interface Prototype
public GPTree deepClone()
public int treeNumber()
public void setup(EvolutionState state, Parameter base)
setup
in interface Prototype
public void printTree(EvolutionState state, int log, int verbosity)
public void printTree(EvolutionState state, java.io.PrintWriter writer)
public void readTree(EvolutionState state, java.io.LineNumberReader reader) throws java.io.IOException, java.lang.CloneNotSupportedException
public void printTreeForHumans(EvolutionState state, int log, int verbosity)
public void buildTree(EvolutionState state, int thread) throws java.lang.CloneNotSupportedException
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