#region License Information
/* HeuristicLab
* Copyright (C) 2002-2019 Heuristic and Evolutionary Algorithms Laboratory (HEAL)
*
* This file is part of HeuristicLab.
*
* HeuristicLab is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* HeuristicLab is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with HeuristicLab. If not, see .
*/
#endregion
using System.Collections.Generic;
using System.Linq;
using HeuristicLab.Common;
using HEAL.Attic;
namespace HeuristicLab.Problems.DataAnalysis {
///
/// Represents a regression data analysis solution
///
[StorableType("00A95897-4AA4-406B-B304-5D19AA30C4B1")]
public class RegressionSolution : RegressionSolutionBase {
protected readonly Dictionary evaluationCache;
[StorableConstructor]
protected RegressionSolution(StorableConstructorFlag _) : base(_) {
evaluationCache = new Dictionary();
}
protected RegressionSolution(RegressionSolution original, Cloner cloner)
: base(original, cloner) {
evaluationCache = new Dictionary(original.evaluationCache);
}
public RegressionSolution(IRegressionModel model, IRegressionProblemData problemData)
: base(model, problemData) {
evaluationCache = new Dictionary(problemData.Dataset.Rows);
CalculateRegressionResults();
}
public override IDeepCloneable Clone(Cloner cloner) {
return new RegressionSolution(this, cloner);
}
public override IEnumerable EstimatedValues {
get { return GetEstimatedValues(Enumerable.Range(0, ProblemData.Dataset.Rows)); }
}
public override IEnumerable EstimatedTrainingValues {
get { return GetEstimatedValues(ProblemData.TrainingIndices); }
}
public override IEnumerable EstimatedTestValues {
get { return GetEstimatedValues(ProblemData.TestIndices); }
}
public override IEnumerable GetEstimatedValues(IEnumerable rows) {
var rowsToEvaluate = rows.Where(row => !evaluationCache.ContainsKey(row));
var rowsEnumerator = rowsToEvaluate.GetEnumerator();
var valuesEnumerator = Model.GetEstimatedValues(ProblemData.Dataset, rowsToEvaluate).GetEnumerator();
while (rowsEnumerator.MoveNext() & valuesEnumerator.MoveNext()) {
evaluationCache.Add(rowsEnumerator.Current, valuesEnumerator.Current);
}
return rows.Select(row => evaluationCache[row]);
}
protected override void OnProblemDataChanged() {
evaluationCache.Clear();
base.OnProblemDataChanged();
}
protected override void OnModelChanged() {
evaluationCache.Clear();
base.OnModelChanged();
}
}
}