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source: branches/TerminationCriteria/HeuristicLab.Termination/3.3/ExecutionTimeTerminator.cs @ 12407

Last change on this file since 12407 was 12407, checked in by pfleck, 9 years ago

#2027
Inverted the conditions to check the continue criteria instead of termination criteria.
Conditions are then specified more naturally: "while generations < max" instead of "break if generations > min".
If any Continue-Check returns false, the algorithm will be terminated.

The naming "Terminator" has to be discussed because it suggest to specify the criteria when the algorithm should stop, instead of continue.

File size: 2.4 KB
Line 
1#region License Information
2/* HeuristicLab
3 * Copyright (C) 2002-2015 Heuristic and Evolutionary Algorithms Laboratory (HEAL)
4 *
5 * This file is part of HeuristicLab.
6 *
7 * HeuristicLab is free software: you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation, either version 3 of the License, or
10 * (at your option) any later version.
11 *
12 * HeuristicLab is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with HeuristicLab. If not, see <http://www.gnu.org/licenses/>.
19 */
20#endregion
21
22using System;
23using HeuristicLab.Common;
24using HeuristicLab.Core;
25using HeuristicLab.Data;
26using HeuristicLab.Persistence.Default.CompositeSerializers.Storable;
27
28namespace HeuristicLab.Termination {
29  [Item("ExecutionTimeTerminator", "A termination criterion based on execution time of an algorithm.")]
30  [StorableClass]
31  public class ExecutionTimeTerminator : ThresholdTerminator<TimeSpanValue> {
32
33    [Storable]
34    private readonly IExecutable executable;
35
36    [StorableConstructor]
37    protected ExecutionTimeTerminator(bool deserializing) : base(deserializing) { }
38    protected ExecutionTimeTerminator(ExecutionTimeTerminator original, Cloner cloner)
39      : base(original, cloner) {
40      executable = cloner.Clone(executable);
41    }
42    public override IDeepCloneable Clone(Cloner cloner) {
43      return new ExecutionTimeTerminator(this, cloner);
44    }
45    public ExecutionTimeTerminator(IExecutable executable)
46      : this(executable, new TimeSpanValue(new TimeSpan(0, 10, 0))) { }
47    public ExecutionTimeTerminator(IExecutable executable, TimeSpanValue maximumExecutionTime)
48      : base(maximumExecutionTime) {
49      this.executable = executable;
50      Name = "Execution Time";
51    }
52
53    protected override bool CheckContinueCriterion() {
54      var max = ThresholdParameter.Value.Value;
55
56      return executable.ExecutionTime < max;
57    }
58
59    public override string ToString() {
60      if (Threshold == null) return Name;
61      else return string.Format("{0} {1} {2}", Name, "<", ThresholdParameter.Value);
62    }
63  }
64}
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