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 3745 2003-02-20 21:20:24Z mdewsnip $
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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 2003/02/20 21:18:23 mdewsnip
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27 | Addition of MG package for search and retrieval
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28 |
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29 | Revision 1.1 1999/08/10 21:17:42 sjboddie
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30 | renamed mg-1.3d directory mg
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31 |
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32 | Revision 1.1 1998/11/17 09:34:23 rjmcnab
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33 | *** empty log message ***
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34 |
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35 | * Revision 1.2 1995/03/14 05:15:21 tes
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36 | * Updated the boolean query optimiser to do different types of optimisation.
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37 | * A query environment variable "optimise_type" specifies which one is to be
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38 | * used. Type 1 is the new one which is faster than 2.
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39 | *
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40 | * Revision 1.1 1994/10/20 03:56:32 tes
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41 | * I have rewritten the boolean query optimiser and abstracted out the
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42 | * components of the boolean query.
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43 | *
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44 | * Revision 1.2 1994/10/18 06:11:03 tes
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45 | * The boolean optimiser seems to be modifying the parse tree
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46 | * like it is supposed to.
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47 | * Paragraph ranking now works without any text files if required to.
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48 | *
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49 | * Revision 1.1 1994/10/12 01:15:29 tes
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50 | * Found bugs in the existing boolean query optimiser.
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51 | * So decided to rewrite it.
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52 | * I accidentally deleted query.bool.y, but I have replaced it
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53 | * with bool_parser.y (which I have forgotten to add here ! ;-(
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54 | *
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55 | */
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56 |
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57 | #ifndef BOOL_OPTIMISER_H
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58 | #define BOOL_OPTIMISER_H
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59 |
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60 | #include "bool_tree.h"
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61 | #include "term_lists.h"
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62 |
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63 | void OptimiseBoolTree (bool_tree_node * parse_tree, TermList * term_list, int type);
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64 |
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65 | #endif
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