public static ProgramNode Learn(Grammar grammar, Spec spec,
Feature <double> scorer, DomainLearningLogic witnessFunctions)
{
var engine = new SynthesisEngine(grammar, new SynthesisEngine.Config
{
Strategies = new ISynthesisStrategy[]
{
new EnumerativeSynthesis(),
new DeductiveSynthesis(witnessFunctions)
},
UseThreads = false,
LogListener = new LogListener(),
});
ProgramSet consistentPrograms = engine.LearnGrammar(spec);
engine.Configuration.LogListener.SaveLogToXML("learning.log.xml");
//foreach (ProgramNode p in consistentPrograms.RealizedPrograms) {
// Console.WriteLine(p);
//}
ProgramNode bestProgram = consistentPrograms.TopK(scorer).FirstOrDefault();
if (bestProgram == null)
{
WriteColored(ConsoleColor.Red, "No program :(");
return(null);
}
var score = bestProgram.GetFeatureValue(scorer);
WriteColored(ConsoleColor.Cyan, $"[score = {score:F3}] {bestProgram}");
return(bestProgram);
}
/// <summary>
/// Learns all region programs that satisfy the examples (advanced feature).
/// Demonstrates access to the entire program set.
/// </summary>
private static void LearnAllRegionPrograms()
{
var session = new RegionSession();
StringRegion input = RegionSession.CreateStringRegion("Carrie Dodson 100");
session.AddConstraints(new RegionExample(input, input.Slice(14, 17))); // "Carrie Dodson 100" => "Dodson"
ProgramSet allPrograms = session.LearnAll().ProgramSet;
IEnumerable <ProgramNode> topKPrograms = allPrograms.TopK(RegionLearner.Instance.ScoreFeature, 3);
var i = 0;
StringRegion[] otherInputs =
{
input, RegionSession.CreateStringRegion("Leonard Robledo NA"),
RegionSession.CreateStringRegion("Margaret Cook 320")
};
foreach (ProgramNode programNode in topKPrograms)
{
Console.WriteLine("Program {0}:", ++i);
var program = new RegionProgram(programNode, ReferenceKind.Parent);
foreach (StringRegion str in otherInputs)
{
StringRegion r = program.Run(str);
Console.WriteLine(r == null ? "null" : r.Value);
}
}
}
/// <summary>
/// Learns all region programs that satisfy the examples (advanced feature).
/// Demonstrates access to the entire program set.
/// </summary>
private static void LearnAllRegionPrograms()
{
var input = StringRegion.Create("Carrie Dodson 100");
var positiveExamples = new[] {
new ExtractionExample <StringRegion>(input, input.Slice(14, 17)) // "Carrie Dodson 100" => "Dodson"
};
var negativeExamples = Enumerable.Empty <ExtractionExample <StringRegion> >();
ProgramSet allPrograms = Learner.Instance.LearnAllRegion(positiveExamples, negativeExamples);
IEnumerable <ProgramNode> topKPrograms = allPrograms.TopK("Score", 3); // "Score" is the ranking feature
var i = 0;
StringRegion[] otherInputs = { input, StringRegion.Create("Leonard Robledo NA"), StringRegion.Create("Margaret Cook 320") };
foreach (var prog in topKPrograms)
{
Console.WriteLine("Program {0}:", ++i);
foreach (var str in otherInputs)
{
State inputState = State.Create(Language.Grammar.InputSymbol, str); // Create Microsoft.ProgramSynthesis input state
object r = prog.Invoke(inputState); // Invoke Microsoft.ProgramSynthesis program node on the input state
Console.WriteLine(r != null ? (r as StringRegion).Value : "null");
}
}
}
public static ProgramNode Learn(Grammar grammar, Spec spec)
{
var engine = new SynthesisEngine(grammar, new SynthesisEngine.Config
{
UseThreads = false,
LogListener = new LogListener(),
});
ProgramSet consistentPrograms = engine.LearnGrammar(spec);
engine.Configuration.LogListener.SaveLogToXML("learning.log.xml");
//foreach (ProgramNode p in consistentPrograms.RealizedPrograms) {
// Console.WriteLine(p);
//}
ProgramNode bestProgram = consistentPrograms.TopK("Score").FirstOrDefault();
if (bestProgram == null)
{
WriteColored(ConsoleColor.Red, "No program :(");
return(null);
}
var score = bestProgram["Score"];
WriteColored(ConsoleColor.Cyan, $"[score = {score:F3}] {bestProgram}");
return(bestProgram);
}
public ProgramNode[] LearnSQLTopK(DataTable inputTable, DataTable outputTable, int k)
{
var spec = SpecFromStateOutput(inputTable, outputTable);
ProgramSet consistentPrograms = LearnProgramSet(spec, new Semantics.WitnessFunctions(Grammar));
int nProgs = consistentPrograms.AllElements.ToArray().Length;
k = (nProgs < k) ? nProgs : k;
return(consistentPrograms.TopK(QueryRanker, k).ToArray());
}
private ProgramNode[] LearnAll(Spec spec, Feature <double> scorer, DomainLearningLogic witnessFunctions)
{
//See if there is a ranking function.
ProgramSet consistentPrograms = LearnProgramSet(spec, witnessFunctions);
if (scorer != null)
{
//If there is a ranking function then find the best program.
ProgramNode bestProgram = consistentPrograms.TopK(scorer).FirstOrDefault();
if (bestProgram == null)
{
Utils.Utils.WriteColored(ConsoleColor.Red, "No program :(");
return(null);
}
var score = bestProgram.GetFeatureValue(scorer);
Utils.Utils.WriteColored(ConsoleColor.Cyan, $"[score = {score:F3}] {bestProgram}");
return(new ProgramNode[] { bestProgram });
}
return(consistentPrograms.AllElements.ToArray());
}
public static IEnumerable <ProgramNode> RankPrograms(ProgramSet programs, int topK, IFeature feature)
{
return(programs.TopK(feature, topK));
}