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source: trunk/sources/HeuristicLab.GP.StructureIdentification/SymbolTable.cs @ 767

Last change on this file since 767 was 767, checked in by gkronber, 15 years ago

worked on #364 (Improve GP evaluation performance)

  • removed list of Instr
  • changes that didn't affect performance directly: reduced size of Instr class, added 'constant-folding' and pre-calculation of skip-lengths


File size: 3.5 KB
Line 
1#region License Information
2/* HeuristicLab
3 * Copyright (C) 2002-2008 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 System.Collections.Generic;
24using System.Linq;
25using System.Text;
26using HeuristicLab.Core;
27using System.Xml;
28
29namespace HeuristicLab.GP.StructureIdentification {
30  class EvaluatorSymbolTable : StorableBase {
31    public const byte ADDITION = 1;
32    public const byte AND = 2;
33    public const byte AVERAGE = 3;
34    public const byte CONSTANT = 4;
35    public const byte COSINUS = 5;
36    public const byte DIFFERENTIAL = 25;
37    public const byte DIVISION = 6;
38    public const byte EQU = 7;
39    public const byte EXP = 8;
40    public const byte GT = 9;
41    public const byte IFTE = 10;
42    public const byte LT = 11;
43    public const byte LOG = 12;
44    public const byte MULTIPLICATION = 13;
45    public const byte NOT = 14;
46    public const byte OR = 15;
47    public const byte POWER = 16;
48    public const byte SIGNUM = 17;
49    public const byte SINUS = 18;
50    public const byte SQRT = 19;
51    public const byte SUBTRACTION = 20;
52    public const byte TANGENS = 21;
53    public const byte VARIABLE = 22;
54    public const byte XOR = 23;
55    public const byte UNKNOWN = 24;
56
57    private static Dictionary<Type, byte> staticTypes = new Dictionary<Type, byte>();
58
59    // needs to be public for persistence mechanism (Activator.CreateInstance needs empty constructor)
60    static EvaluatorSymbolTable() {
61      staticTypes = new Dictionary<Type, byte>();
62      staticTypes[typeof(Addition)] = ADDITION;
63      staticTypes[typeof(And)] = AND;
64      staticTypes[typeof(Average)] = AVERAGE;
65      staticTypes[typeof(Constant)] = CONSTANT;
66      staticTypes[typeof(Cosinus)] = COSINUS;
67      staticTypes[typeof(Division)] = DIVISION;
68      staticTypes[typeof(Equal)] = EQU;
69      staticTypes[typeof(Exponential)] = EXP;
70      staticTypes[typeof(GreaterThan)] = GT;
71      staticTypes[typeof(IfThenElse)] = IFTE;
72      staticTypes[typeof(LessThan)] = LT;
73      staticTypes[typeof(Logarithm)] = LOG;
74      staticTypes[typeof(Multiplication)] = MULTIPLICATION;
75      staticTypes[typeof(Not)] = NOT;
76      staticTypes[typeof(Or)] = OR;
77      staticTypes[typeof(Power)] = POWER;
78      staticTypes[typeof(Signum)] = SIGNUM;
79      staticTypes[typeof(Sinus)] = SINUS;
80      staticTypes[typeof(Sqrt)] = SQRT;
81      staticTypes[typeof(Subtraction)] = SUBTRACTION;
82      staticTypes[typeof(Tangens)] = TANGENS;
83      staticTypes[typeof(Variable)] = VARIABLE;
84      staticTypes[typeof(Xor)] = XOR;
85      staticTypes[typeof(Differential)] = DIFFERENTIAL;
86    }
87
88    internal static byte MapFunction(IFunction function) {
89      if(staticTypes.ContainsKey(function.GetType())) return staticTypes[function.GetType()];
90      else return UNKNOWN;
91    }
92  }
93}
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