| 1 | .\"------------------------------------------------------------
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| 2 | .\" Id - set Rv,revision, and Dt, Date using rcs-Id tag.
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| 3 | .de Id
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| 4 | .ds Rv \\$3
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| 5 | .ds Dt \\$4
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| 6 | ..
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| 7 | .Id $Id: mg_weights_build.1 3745 2003-02-20 21:20:24Z mdewsnip $
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| 8 | .\"------------------------------------------------------------
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| 9 | .TH mg_weights_build 1 \*(Dt CITRI
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| 10 | .SH NAME
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| 11 | mg_weights_build \- builds the approximate weights file
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| 12 | .SH SYNOPSIS
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| 13 | .B mg_weights_build
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| 14 | [
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| 15 | .B \-h
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| 16 | ]
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| 17 | [
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| 18 | .B \-s
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| 19 | ]
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| 20 | [
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| 21 | .BI \-b " num"
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| 22 | ]
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| 23 | [
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| 24 | .BI \-d " directory"
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| 25 | ]
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| 26 | .if n .ti +9n
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| 27 | .BI \-f " name"
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| 28 | .SH DESCRIPTION
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| 29 | .B mg_weights_build
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| 30 | is the program that generates the approximate weights file and the
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| 31 | interleaved text index and exact weights file. To do this, it uses
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| 32 | the text index and either the exact weights file, or the inverted file
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| 33 | and stemmed dictionary.
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| 34 | .SH OPTIONS
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| 35 | Options may appear in any order.
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| 36 | .TP "\w'\fB\-d\fP \fIdirectory\fP'u+2n"
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| 37 | .B \-h
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| 38 | This displays a usage line on
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| 39 | .IR stderr .
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| 40 | .TP
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| 41 | .B \-s
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| 42 | Save the weights generated from the
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| 43 | .I *.invf
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| 44 | and
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| 45 | .I *.invf.dict
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| 46 | file in a
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| 47 | .I *.weight
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| 48 | file.
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| 49 | .TP
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| 50 | .BI \-b " num"
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| 51 | This specifies the number of bits of precision that should be used for
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| 52 | the approximate weights. If not specified, it defaults to 8.
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| 53 | .TP
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| 54 | .BI \-d " directory"
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| 55 | This specifies the directory where the document collection is.
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| 56 | .TP
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| 57 | .BI \-f " name"
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| 58 | This specifies the base name of the document collection.
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| 59 | .SH ENVIRONMENT
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| 60 | .TP "\w'\fBMGDATA\fP'u+2n"
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| 61 | .SB MGDATA
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| 62 | If this environment variable exists, then its value is used as the
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| 63 | default directory where the
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| 64 | .BR mg (1)
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| 65 | collection files are. If this variable does not exist, then the
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| 66 | directory \*(lq\fB.\fP\*(rq is used by default. The command line
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| 67 | option
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| 68 | .BI \-d " directory"
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| 69 | overrides the directory in
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| 70 | .BR MGDATA .
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| 71 | .SH FILES
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| 72 | .TP 20
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| 73 | .B *.invf
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| 74 | Inverted file.
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| 75 | .TP
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| 76 | .B *.invf.dict
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| 77 | Compressed stemmed dictionary.
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| 78 | .TP
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| 79 | .B *.weight
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| 80 | The exact weights file.
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| 81 | .TP
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| 82 | .B *.text.idx
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| 83 | Index into the compressed documents.
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| 84 | .TP
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| 85 | .B *.text.idx.wgt
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| 86 | Interleaved index into the compressed documents and document weights.
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| 87 | .TP
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| 88 | .B *.weight.approx
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| 89 | Approximate document weights.
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| 90 | .SH "SEE ALSO"
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| 91 | .na
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| 92 | .BR mg (1),
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| 93 | .BR mg_compression_dict (1),
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| 94 | .BR mg_fast_comp_dict (1),
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| 95 | .BR mg_get (1),
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| 96 | .BR mg_invf_dict (1),
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| 97 | .BR mg_invf_dump (1),
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| 98 | .BR mg_invf_rebuild (1),
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| 99 | .BR mg_passes (1),
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| 100 | .BR mg_perf_hash_build (1),
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| 101 | .BR mg_text_estimate (1),
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| 102 | .BR mgbilevel (1),
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| 103 | .BR mgbuild (1),
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| 104 | .BR mgdictlist (1),
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| 105 | .BR mgfelics (1),
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| 106 | .BR mgquery (1),
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| 107 | .BR mgstat (1),
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| 108 | .BR mgtic (1),
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| 109 | .BR mgticbuild (1),
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| 110 | .BR mgticdump (1),
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| 111 | .BR mgticprune (1),
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| 112 | .BR mgticstat (1).
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