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/*-------------------------------------------------------------------------
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* prototypes for recombination in the genetic query optimizer
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* Portions Copyright (c) 1996-2005, PostgreSQL Global Development Group
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* Portions Copyright (c) 1994, Regents of the University of California
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* $PostgreSQL: pgsql/src/include/optimizer/geqo_recombination.h,v 1.16 2004-12-31 22:03:36 pgsql Exp $
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*-------------------------------------------------------------------------
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=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=
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* Martin Utesch * Institute of Automatic Control *
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= = University of Mining and Technology =
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* utesch@aut.tu-freiberg.de * Freiberg, Germany *
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=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=
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/* -- parts of this are adapted from D. Whitley's Genitor algorithm -- */
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#ifndef GEQO_RECOMBINATION_H
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#define GEQO_RECOMBINATION_H
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#include "optimizer/geqo_gene.h"
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extern void init_tour(Gene *tour, int num_gene);
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/* edge recombination crossover [ERX] */
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Gene edge_list[4]; /* list of edges */
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extern Edge *alloc_edge_table(int num_gene);
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extern void free_edge_table(Edge *edge_table);
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extern float gimme_edge_table(Gene *tour1, Gene *tour2, int num_gene, Edge *edge_table);
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extern int gimme_tour(Edge *edge_table, Gene *new_gene, int num_gene);
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/* partially matched crossover [PMX] */
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#define DAD 1 /* indicator for gene from dad */
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#define MOM 0 /* indicator for gene from mom */
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extern void pmx(Gene *tour1, Gene *tour2, Gene *offspring, int num_gene);
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extern City *alloc_city_table(int num_gene);
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extern void free_city_table(City *city_table);
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/* cycle crossover [CX] */
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extern int cx(Gene *tour1, Gene *tour2, Gene *offspring, int num_gene, City *city_table);
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/* position crossover [PX] */
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extern void px(Gene *tour1, Gene *tour2, Gene *offspring, int num_gene, City *city_table);
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/* order crossover [OX1] according to Davis */
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extern void ox1(Gene *mom, Gene *dad, Gene *offspring, int num_gene, City *city_table);
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/* order crossover [OX2] according to Syswerda */
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extern void ox2(Gene *mom, Gene *dad, Gene *offspring, int num_gene, City *city_table);
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#endif /* GEQO_RECOMBINATION_H */