[645] | 1 | #region License Information
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| 2 | /* HeuristicLab
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| 3 | * Copyright (C) 2002-2008 Heuristic and Evolutionary Algorithms Laboratory (HEAL)
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| 4 | *
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| 5 | * This file is part of HeuristicLab.
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| 6 | *
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| 7 | * HeuristicLab is free software: you can redistribute it and/or modify
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| 8 | * it under the terms of the GNU General Public License as published by
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| 9 | * the Free Software Foundation, either version 3 of the License, or
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| 10 | * (at your option) any later version.
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| 11 | *
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| 12 | * HeuristicLab is distributed in the hope that it will be useful,
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| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 15 | * GNU General Public License for more details.
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| 16 | *
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| 17 | * You should have received a copy of the GNU General Public License
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| 18 | * along with HeuristicLab. If not, see <http://www.gnu.org/licenses/>.
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| 19 | */
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| 20 | #endregion
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| 21 |
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| 22 | using System;
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| 23 | using System.Collections.Generic;
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| 24 | using System.Text;
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| 25 | using HeuristicLab.Core;
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| 26 | using System.Diagnostics;
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| 27 | using HeuristicLab.Constraints;
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| 28 | using System.Linq;
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| 29 | using HeuristicLab.DataAnalysis;
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| 30 |
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| 31 | namespace HeuristicLab.GP.StructureIdentification {
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| 32 | public sealed class Subtraction : FunctionBase {
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| 33 | public override string Description {
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| 34 | get {
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| 35 | return @"Subtracts the results of sub-tree 2..n from the result of the first sub-tree.
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| 36 | (- 3) => -3
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| 37 | (- 2 3) => -1
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| 38 | (- 3 4 5) => -6";
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| 39 | }
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| 40 | }
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| 41 |
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| 42 | public Subtraction()
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| 43 | : base() {
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| 44 | // 2 - 3 seems like an reasonable defaut (used for +,-,*,/) (discussion with swinkler and maffenze)
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[2054] | 45 | //MK changed to only 2 allowed suboperators to be compliant with HL2
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| 46 | AddConstraint(new NumberOfSubOperatorsConstraint(2, 2));
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[645] | 47 | AddConstraint(new SubOperatorTypeConstraint(0));
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| 48 | AddConstraint(new SubOperatorTypeConstraint(1));
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| 49 | }
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| 50 | }
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| 51 | }
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