public void TestRenderFunction()
{
EncogProgram expression = new EncogProgram("(sin(x)+cos(x))/2");
RenderCommonExpression render = new RenderCommonExpression();
String result = render.Render(expression);
Assert.AreEqual("((sin(x)+cos(x))/2)", result);
}
public void TestRenderFunction()
{
EncogProgram expression = new EncogProgram("(sin(x)+cos(x))/2");
RenderEPL render = new RenderEPL();
String result = render.Render(expression);
Assert.AreEqual("[#var:0:0][sin:1][#var:0:0][cos:1][+:2][#const:0:2][/:2]", result);
}
public void TestKnownConst()
{
EncogProgram expression = new EncogProgram("x*2*PI");
RenderCommonExpression render = new RenderCommonExpression();
String result = render.Render(expression);
Assert.AreEqual("((x*2)*PI)", result);
}
public void TestRenderComplex()
{
EncogProgram expression = new EncogProgram("((a+25)^3/25)-((a*3)^4/250)");
RenderRPN render = new RenderRPN();
String result = render.Render(expression);
Assert.AreEqual("a 25 [+] 3 [^] 25 [/] a 3 [*] 4 [^] 250 [/] [-]", result);
}
public void TestRenderFunction()
{
EncogProgram expression = new EncogProgram("(sin(x)+cos(x))/2");
RenderRPN render = new RenderRPN();
String result = render.Render(expression);
Assert.AreEqual("x [sin] x [cos] [+] 2 [/]", result);
}
public void TestRenderBasic()
{
EncogProgram expression = new EncogProgram("(2+6)");
RenderRPN render = new RenderRPN();
String result = render.Render(expression);
Assert.AreEqual("2 6 [+]", result);
}
public void TestRenderComplex()
{
EncogProgram expression = new EncogProgram("((a+25)^3/25)-((a*3)^4/250)");
RenderCommonExpression render = new RenderCommonExpression();
String result = render.Render(expression);
Assert.AreEqual("((((a+25)^3)/25)-(((a*3)^4)/250))", result);
}
public void TestRenderBasic()
{
EncogProgram expression = new EncogProgram("(2+6)");
RenderEPL render = new RenderEPL();
String result = render.Render(expression);
Assert.AreEqual("[#const:0:2][#const:0:6][+:2]", result);
}
public void TestRenderComplex()
{
EncogProgram expression = new EncogProgram("((a+25)^3/25)-((a*3)^4/250)");
RenderEPL render = new RenderEPL();
String result = render.Render(expression);
Assert.AreEqual("[#var:0:0][#const:0:25][+:2][#const:0:3][^:2][#const:0:25][/:2][#var:0:0][#const:0:3][*:2][#const:0:4][^:2][#const:0:250][/:2][-:2]", result);
}
public void TestKnownConst()
{
EncogProgram expression = new EncogProgram("x*2*PI");
RenderRPN render = new RenderRPN();
String result = render.Render(expression);
Assert.AreEqual("x 2 [*] PI [*]", result);
}
/// <summary>
/// Create a new program, using this context.
/// </summary>
/// <param name="expression">The common expression to compile.</param>
/// <returns>The resulting program.</returns>
public EncogProgram CreateProgram(String expression)
{
var result = new EncogProgram(this);
result.CompileExpression(expression);
return(result);
}
/// <summary>
/// Clone a branch of the program from the specified node.
/// </summary>
/// <param name="targetProgram">The program that this branch will be "grafted" into.</param>
/// <param name="sourceBranch">The branch to clone, from the source program.</param>
/// <returns>The cloned branch.</returns>
public ProgramNode CloneBranch(EncogProgram targetProgram,
ProgramNode sourceBranch)
{
if (sourceBranch == null)
{
throw new EncogError("Can't clone null branch.");
}
String name = sourceBranch.Name;
// create any subnodes
var args = new ProgramNode[sourceBranch.ChildNodes.Count];
for (int i = 0; i < args.Length; i++)
{
args[i] = CloneBranch(targetProgram, (ProgramNode)sourceBranch
.ChildNodes[i]);
}
ProgramNode result = targetProgram.Context.Functions
.FactorProgramNode(name, targetProgram, args);
// now copy the expression data for the node
for (int i = 0; i < sourceBranch.Data.Length; i++)
{
result.Data[i] = new ExpressionValue(sourceBranch.Data[i]);
}
// return the new node
return(result);
}
public void TestAssignment3()
{
EncogProgram expression = new EncogProgram("v1+v2+v3");
expression.Variables.SetVariable("v1", 1);
expression.Variables.SetVariable("v2", 2);
expression.Variables.SetVariable("v3", 3);
Assert.AreEqual(6, expression.Evaluate().ToFloatValue(), EncogFramework.DefaultDoubleEqual);
}
/// <summary>
/// Clone an entire program, keep the same context.
/// </summary>
/// <param name="sourceProgram">The source program.</param>
/// <returns>The cloned program.</returns>
public EncogProgram CloneProgram(EncogProgram sourceProgram)
{
ProgramNode rootNode = sourceProgram.RootNode;
var result = new EncogProgram(this);
result.RootNode = CloneBranch(result, rootNode);
return(result);
}
public void TestAssignment2()
{
EncogProgram expression = new EncogProgram("cccc*(aa+bbb)");
expression.Variables.SetVariable("aa", 1);
expression.Variables.SetVariable("bbb", 2);
expression.Variables.SetVariable("cccc", 3);
Assert.AreEqual(9, expression.Evaluate().ToFloatValue(), EncogFramework.DefaultDoubleEqual);
}
public void TestCrossoverOperation()
{
RenderCommonExpression render = new RenderCommonExpression();
EncogProgram prg = new EncogProgram("1+2");
EncogProgram prg2 = new EncogProgram("4+5");
ProgramNode node = prg.FindNode(2);
prg.ReplaceNode(node, prg2.RootNode);
Assert.AreEqual("(1+(4+5))", render.Render(prg));
}
public void TestSimpleClone()
{
EncogProgramContext context = new EncogProgramContext();
context.LoadAllFunctions();
RenderCommonExpression render = new RenderCommonExpression();
EncogProgram prg1 = context.CreateProgram("1*2*3");
EncogProgram prg2 = context.CloneProgram(prg1);
Assert.AreEqual("((1*2)*3)", render.Render(prg1));
Assert.AreEqual("((1*2)*3)", render.Render(prg2));
}
public void TestSize()
{
EncogProgram expression = new EncogProgram("1");
Assert.AreEqual(1, expression.RootNode.Count);
expression = new EncogProgram("1+1");
Assert.AreEqual(3, expression.RootNode.Count);
expression = new EncogProgram("1+1+1");
Assert.AreEqual(5, expression.RootNode.Count);
expression = new EncogProgram("(sin(x)+cos(x))/2");
Assert.AreEqual(7, expression.RootNode.Count);
}
/// <summary>
/// Construct the program node.
/// </summary>
/// <param name="theOwner">The owner of the node.</param>
/// <param name="theTemplate">The opcode that this node is based on.</param>
/// <param name="theArgs">The child nodes to this node.</param>
public ProgramNode(EncogProgram theOwner,
IProgramExtensionTemplate theTemplate,
ITreeNode[] theArgs)
{
_owner = theOwner;
_data = new ExpressionValue[theTemplate.DataSize];
_template = theTemplate;
AddChildNodes(theArgs);
for (int i = 0; i < _data.Length; i++)
{
_data[i] = new ExpressionValue((long)0);
}
}
/// <summary>
/// Construct the program node.
/// </summary>
/// <param name="theOwner">The owner of the node.</param>
/// <param name="theTemplate">The opcode that this node is based on.</param>
/// <param name="theArgs">The child nodes to this node.</param>
public ProgramNode(EncogProgram theOwner,
IProgramExtensionTemplate theTemplate,
ITreeNode[] theArgs)
{
_owner = theOwner;
_data = new ExpressionValue[theTemplate.DataSize];
_template = theTemplate;
AddChildNodes(theArgs);
for (int i = 0; i < _data.Length; i++)
{
_data[i] = new ExpressionValue((long) 0);
}
}
public void TestCloneComplex()
{
EncogProgramContext context = new EncogProgramContext();
context.LoadAllFunctions();
context.DefineVariable("a");
RenderCommonExpression render = new RenderCommonExpression();
EncogProgram prg1 = context.CreateProgram("((a+25)^3/25)-((a*3)^4/250)");
EncogProgram prg2 = context.CloneProgram(prg1);
Assert.AreEqual("((((a+25)^3)/25)-(((a*3)^4)/250))", render.Render(prg1));
Assert.AreEqual("((((a+25)^3)/25)-(((a*3)^4)/250))", render.Render(prg2));
}
public void TestSize()
{
EncogProgram expression = new EncogProgram("1");
Assert.AreEqual(1, expression.RootNode.Count);
expression = new EncogProgram("1+1");
Assert.AreEqual(3, expression.RootNode.Count);
expression = new EncogProgram("1+1+1");
Assert.AreEqual(5, expression.RootNode.Count);
expression = new EncogProgram("(sin(x)+cos(x))/2");
Assert.AreEqual(7, expression.RootNode.Count);
}
private PrgPopulation Create()
{
EncogProgramContext context = new EncogProgramContext();
context.DefineVariable("x");
StandardExtensions.CreateAll(context);
PrgPopulation pop = new PrgPopulation(context, 10);
EncogProgram prg1 = new EncogProgram(context);
EncogProgram prg2 = new EncogProgram(context);
prg1.CompileExpression("x+1");
prg2.CompileExpression("(x+5)/2");
ISpecies defaultSpecies = pop.CreateSpecies();
defaultSpecies.Add(prg1);
defaultSpecies.Add(prg2);
return pop;
}
public void Eval(String start, String expect)
{
EncogProgramContext context = new EncogProgramContext();
StandardExtensions.CreateNumericOperators(context);
PrgPopulation pop = new PrgPopulation(context, 1);
ICalculateScore score = new ZeroEvalScoreFunction();
TrainEA genetic = new TrainEA(pop, score);
genetic.ValidationMode = true;
genetic.CODEC = new PrgCODEC();
genetic.AddOperation(0.95, new SubtreeCrossover());
genetic.AddOperation(0.05, new SubtreeMutation(context, 4));
genetic.AddScoreAdjuster(new ComplexityAdjustedScore());
genetic.Rules.AddRewriteRule(new RewriteConstants());
genetic.Rules.AddRewriteRule(new RewriteAlgebraic());
EncogProgram expression = new EncogProgram(context);
expression.CompileExpression(start);
RenderCommonExpression render = new RenderCommonExpression();
genetic.Rules.Rewrite(expression);
Assert.AreEqual(expect, render.Render(expression));
}
/// <summary>
/// Parse the specified program, or expression, and return the result. No
/// variables can be defined for this as a default context is used. The
/// result is returned as a boolean.
/// </summary>
/// <param name="str">The program expression.</param>
/// <returns>The value the expression was evaluated to.</returns>
public static bool ParseBoolean(String str)
{
var holder = new EncogProgram(str);
return holder.Evaluate().ToBooleanValue();
}
/// <summary>
/// Create a new program, using this context.
/// </summary>
/// <param name="expression">The common expression to compile.</param>
/// <returns>The resulting program.</returns>
public EncogProgram CreateProgram(String expression)
{
var result = new EncogProgram(this);
result.CompileExpression(expression);
return result;
}
/// <summary>
/// Clone an entire program, keep the same context.
/// </summary>
/// <param name="sourceProgram">The source program.</param>
/// <returns>The cloned program.</returns>
public EncogProgram CloneProgram(EncogProgram sourceProgram)
{
ProgramNode rootNode = sourceProgram.RootNode;
var result = new EncogProgram(this);
result.RootNode = CloneBranch(result, rootNode);
return result;
}
/// <summary>
/// Clone a branch of the program from the specified node.
/// </summary>
/// <param name="targetProgram">The program that this branch will be "grafted" into.</param>
/// <param name="sourceBranch">The branch to clone, from the source program.</param>
/// <returns>The cloned branch.</returns>
public ProgramNode CloneBranch(EncogProgram targetProgram,
ProgramNode sourceBranch)
{
if (sourceBranch == null)
{
throw new EncogError("Can't clone null branch.");
}
String name = sourceBranch.Name;
// create any subnodes
var args = new ProgramNode[sourceBranch.ChildNodes.Count];
for (int i = 0; i < args.Length; i++)
{
args[i] = CloneBranch(targetProgram, (ProgramNode) sourceBranch
.ChildNodes[i]);
}
ProgramNode result = targetProgram.Context.Functions
.FactorProgramNode(name, targetProgram, args);
// now copy the expression data for the node
for (int i = 0; i < sourceBranch.Data.Length; i++)
{
result.Data[i] = new ExpressionValue(sourceBranch.Data[i]);
}
// return the new node
return result;
}
public String Render(EncogProgram theProgram)
{
this.program = theProgram;
return RenderNode(this.program.RootNode);
}
public void TestNegAssignment()
{
EncogProgram expression = new EncogProgram("-a");
expression.Variables.SetVariable("a", 5);
Assert.AreEqual(-5, expression.Evaluate().ToFloatValue(), EncogFramework.DefaultDoubleEqual);
}
public void testVarComplex()
{
EncogProgram expression = new EncogProgram("(x^((1+((x^-8)-(4^x)))^(((-7/2)-(0--5.8))/x)))");
expression.Variables.SetVariable("x", 10);
Assert.IsTrue(Double.IsNaN(expression.Evaluate().ToFloatValue()));
}
/// <summary>
/// Analyze the neural network.
/// </summary>
/// <param name="inputFile">The input file.</param>
/// <param name="headers">True, if there are headers.</param>
/// <param name="format">The format of the CSV file.</param>
public void Analyze(FileInfo inputFile, bool headers, CSVFormat format)
{
InputFilename = inputFile;
ExpectInputHeaders = headers;
Format = format;
Analyzed = true;
PerformBasicCounts();
expressionFields.Clear();
extension = new ProcessExtension(Format);
extension.register(programContext.Functions);
foreach (ProcessField field in analyst.Script.Process.Fields)
{
var prg = new EncogProgram(programContext, programVariables);
prg.SetExtraData(ProcessExtension.EXTENSION_DATA_NAME, extension);
prg.CompileExpression(field.Command);
expressionFields.Add(prg);
}
}
public ParseCommonExpression(EncogProgram theHolder)
{
this.holder = theHolder;
}
/// <summary>
/// Parse the specified program, or expression, and return the result. No
/// variables can be defined for this as a default context is used. The
/// result is returned as a boolean.
/// </summary>
/// <param name="str">The program expression.</param>
/// <returns>The value the expression was evaluated to.</returns>
public static bool ParseBoolean(String str)
{
var holder = new EncogProgram(str);
return(holder.Evaluate().ToBooleanValue());
}
/// <summary>
/// Parse the specified program, or expression, and return the result. No
/// variables can be defined for this as a default context is used. The
/// result is returned as a boolean.
/// </summary>
/// <param name="str">The program expression.</param>
/// <returns>The value the expression was evaluated to.</returns>
public static ExpressionValue ParseExpression(String str)
{
var holder = new EncogProgram(str);
return(holder.Evaluate());
}
/// <inheritdoc />
public Object Read(Stream istream)
{
var context = new EncogProgramContext();
var result = new PrgPopulation(context, 0);
var reader = new EncogReadHelper(istream);
EncogFileSection section;
int count = 0;
ISpecies lastSpecies = null;
while ((section = reader.ReadNextSection()) != null)
{
if (section.SectionName.Equals("BASIC") &&
section.SubSectionName.Equals("PARAMS"))
{
IDictionary <string, string> prms = section.ParseParams();
EngineArray.PutAll(prms, result.Properties);
}
else if (section.SectionName.Equals("BASIC") &&
section.SubSectionName.Equals("EPL-POPULATION"))
{
foreach (string line in section.Lines)
{
IList <String> cols = EncogFileSection.SplitColumns(line);
if (String.Compare(cols[0], "s", StringComparison.OrdinalIgnoreCase) == 0)
{
lastSpecies = new BasicSpecies
{
Age = int.Parse(cols[1]),
BestScore = CSVFormat.EgFormat.Parse(cols[2]),
Population = result,
GensNoImprovement = int.Parse(cols[3])
};
result.Species.Add(lastSpecies);
}
else if (cols[0].Equals("p"))
{
double score;
double adjustedScore;
if (String.Compare(cols[1], "nan", StringComparison.OrdinalIgnoreCase) == 0 ||
String.Compare(cols[2], "nan", StringComparison.OrdinalIgnoreCase) == 0)
{
score = Double.NaN;
adjustedScore = Double.NaN;
}
else
{
score = CSVFormat.EgFormat.Parse(cols[1]);
adjustedScore = CSVFormat.EgFormat.Parse(cols[2]);
}
String code = cols[3];
var prg = new EncogProgram(context);
prg.CompileEPL(code);
prg.Score = score;
prg.Species = lastSpecies;
prg.AdjustedScore = adjustedScore;
if (lastSpecies == null)
{
throw new EncogError(
"Have not defined a species yet");
}
lastSpecies.Add(prg);
count++;
}
}
}
else if (section.SectionName.Equals("BASIC") &&
section.SubSectionName.Equals("EPL-OPCODES"))
{
foreach (String line in section.Lines)
{
IList <string> cols = EncogFileSection.SplitColumns(line);
String name = cols[0];
int args = int.Parse(cols[1]);
result.Context.Functions.AddExtension(name, args);
}
}
else if (section.SectionName.Equals("BASIC") &&
section.SubSectionName.Equals("EPL-SYMBOLIC"))
{
bool first = true;
foreach (string line in section.Lines)
{
if (!first)
{
IList <String> cols = EncogFileSection.SplitColumns(line);
String name = cols[0];
String t = cols[1];
var vt = EPLValueType.Unknown;
if (string.Compare(t, "f", true) == 0)
{
vt = EPLValueType.FloatingType;
}
else if (string.Compare(t, "b", true) == 0)
{
vt = EPLValueType.BooleanType;
}
else if (string.Compare(t, "i", true) == 0)
{
vt = EPLValueType.IntType;
}
else if (string.Compare(t, "s", true) == 0)
{
vt = EPLValueType.StringType;
}
else if (string.Compare(t, "e", true) == 0)
{
vt = EPLValueType.EnumType;
}
int enumType = int.Parse(cols[2]);
int enumCount = int.Parse(cols[3]);
var mapping = new VariableMapping(
name, vt, enumType, enumCount);
if (mapping.Name.Length > 0)
{
result.Context.DefineVariable(mapping);
}
else
{
result.Context.Result = mapping;
}
}
else
{
first = false;
}
}
}
}
result.PopulationSize = count;
// set the best genome, should be the first genome in the first species
if (result.Species.Count > 0)
{
ISpecies species = result.Species[0];
if (species.Members.Count > 0)
{
result.BestGenome = species.Members[0];
}
// set the leaders
foreach (ISpecies sp in result.Species)
{
if (sp.Members.Count > 0)
{
sp.Leader = sp.Members[0];
}
}
}
return(result);
}
/// <summary>
/// Parse the specified program, or expression, and return the result. No
/// variables can be defined for this as a default context is used. The
/// result is returned as a float.
/// </summary>
/// <param name="str">The program expression value.</param>
/// <returns>The value the expression was evaluated to.</returns>
public static double ParseFloat(String str)
{
var holder = new EncogProgram(str);
return(holder.Evaluate().ToFloatValue());
}
/// <summary>
/// Parse the specified program, or expression, and return the result. No
/// variables can be defined for this as a default context is used. The
/// result is returned as a float.
/// </summary>
/// <param name="str">The program expression value.</param>
/// <returns>The value the expression was evaluated to.</returns>
public static double ParseFloat(String str)
{
var holder = new EncogProgram(str);
return holder.Evaluate().ToFloatValue();
}
/// <summary>
/// Parse the specified program, or expression, and return the result. No
/// variables can be defined for this as a default context is used. The
/// result is returned as a boolean.
/// </summary>
/// <param name="str">The program expression.</param>
/// <returns>The value the expression was evaluated to.</returns>
public static ExpressionValue ParseExpression(String str)
{
var holder = new EncogProgram(str);
return holder.Evaluate();
}
/// <summary>
/// Parse the specified program, or expression, and return the result. No
/// variables can be defined for this as a default context is used. The
/// result is returned as a string.
/// </summary>
/// <param name="str">The program expression value.</param>
/// <returns>The value the expression was evaluated to.</returns>
public static String ParseString(String str)
{
var holder = new EncogProgram(str);
return(holder.Evaluate().ToStringValue());
}
/// <summary>
/// Parse the specified program, or expression, and return the result. No
/// variables can be defined for this as a default context is used. The
/// result is returned as a string.
/// </summary>
/// <param name="str">The program expression value.</param>
/// <returns>The value the expression was evaluated to.</returns>
public static String ParseString(String str)
{
var holder = new EncogProgram(str);
return holder.Evaluate().ToStringValue();
}
public ParseEPL(EncogProgram theHolder)
{
this.holder = theHolder;
}