| 1 | /**************************************************************************
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| 2 | *
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| 3 | * bool_optimiser -- optimise boolean parse tree
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| 4 | * Copyright (C) 1994 Tim Shimmin
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| 5 | *
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| 6 | * This program is free software; you can redistribute it and/or modify
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| 7 | * it under the terms of the GNU General Public License as published by
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| 8 | * the Free Software Foundation; either version 2 of the License, or
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| 9 | * (at your option) any later version.
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| 10 | *
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| 11 | * This program is distributed in the hope that it will be useful,
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| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 14 | * GNU General Public License for more details.
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| 15 | *
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| 16 | * You should have received a copy of the GNU General Public License
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| 17 | * along with this program; if not, write to the Free Software
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| 18 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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| 19 | *
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| 20 | * $Id: bool_optimiser.h 13 1998-11-17 09:36:00Z rjmcnab $
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| 21 | *
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| 22 | **************************************************************************/
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| 23 |
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| 24 | /*
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| 25 | $Log$
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| 26 | Revision 1.1 1998/11/17 09:34:23 rjmcnab
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| 27 | *** empty log message ***
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| 28 |
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| 29 | * Revision 1.2 1995/03/14 05:15:21 tes
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| 30 | * Updated the boolean query optimiser to do different types of optimisation.
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| 31 | * A query environment variable "optimise_type" specifies which one is to be
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| 32 | * used. Type 1 is the new one which is faster than 2.
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| 33 | *
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| 34 | * Revision 1.1 1994/10/20 03:56:32 tes
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| 35 | * I have rewritten the boolean query optimiser and abstracted out the
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| 36 | * components of the boolean query.
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| 37 | *
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| 38 | * Revision 1.2 1994/10/18 06:11:03 tes
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| 39 | * The boolean optimiser seems to be modifying the parse tree
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| 40 | * like it is supposed to.
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| 41 | * Paragraph ranking now works without any text files if required to.
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| 42 | *
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| 43 | * Revision 1.1 1994/10/12 01:15:29 tes
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| 44 | * Found bugs in the existing boolean query optimiser.
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| 45 | * So decided to rewrite it.
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| 46 | * I accidentally deleted query.bool.y, but I have replaced it
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| 47 | * with bool_parser.y (which I have forgotten to add here ! ;-(
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| 48 | *
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| 49 | */
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| 50 |
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| 51 | #ifndef BOOL_OPTIMISER_H
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| 52 | #define BOOL_OPTIMISER_H
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| 53 |
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| 54 | #include "bool_tree.h"
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| 55 | #include "term_lists.h"
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| 56 |
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| 57 | void OptimiseBoolTree (bool_tree_node * parse_tree, TermList * term_list, int type);
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| 58 |
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| 59 | #endif
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