1 /*-------------------------------------------------------------------------
4 * prototypes for recombination in the genetic query optimizer
6 * Portions Copyright (c) 1996-2014, PostgreSQL Global Development Group
7 * Portions Copyright (c) 1994, Regents of the University of California
9 * src/include/optimizer/geqo_recombination.h
11 *-------------------------------------------------------------------------
15 =*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=
16 * Martin Utesch * Institute of Automatic Control *
17 = = University of Mining and Technology =
18 * utesch@aut.tu-freiberg.de * Freiberg, Germany *
19 =*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=
22 /* -- parts of this are adapted from D. Whitley's Genitor algorithm -- */
24 #ifndef GEQO_RECOMBINATION_H
25 #define GEQO_RECOMBINATION_H
27 #include "optimizer/geqo.h"
30 extern void init_tour(PlannerInfo *root, Gene *tour, int num_gene);
33 /* edge recombination crossover [ERX] */
37 Gene edge_list[4]; /* list of edges */
42 extern Edge *alloc_edge_table(PlannerInfo *root, int num_gene);
43 extern void free_edge_table(PlannerInfo *root, Edge *edge_table);
45 extern float gimme_edge_table(PlannerInfo *root, Gene *tour1, Gene *tour2,
46 int num_gene, Edge *edge_table);
48 extern int gimme_tour(PlannerInfo *root, Edge *edge_table, Gene *new_gene,
52 /* partially matched crossover [PMX] */
54 #define DAD 1 /* indicator for gene from dad */
55 #define MOM 0 /* indicator for gene from mom */
57 extern void pmx(PlannerInfo *root,
58 Gene *tour1, Gene *tour2,
59 Gene *offspring, int num_gene);
70 extern City *alloc_city_table(PlannerInfo *root, int num_gene);
71 extern void free_city_table(PlannerInfo *root, City *city_table);
73 /* cycle crossover [CX] */
74 extern int cx(PlannerInfo *root, Gene *tour1, Gene *tour2,
75 Gene *offspring, int num_gene, City *city_table);
77 /* position crossover [PX] */
78 extern void px(PlannerInfo *root, Gene *tour1, Gene *tour2, Gene *offspring,
79 int num_gene, City *city_table);
81 /* order crossover [OX1] according to Davis */
82 extern void ox1(PlannerInfo *root, Gene *mom, Gene *dad, Gene *offspring,
83 int num_gene, City *city_table);
85 /* order crossover [OX2] according to Syswerda */
86 extern void ox2(PlannerInfo *root, Gene *mom, Gene *dad, Gene *offspring,
87 int num_gene, City *city_table);
89 #endif /* GEQO_RECOMBINATION_H */