| 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 | .\"------------------------------------------------------------
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| 8 | .TH mgpp_stem_idx 1 \*(Dt CITRI
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| 9 | .SH NAME
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| 10 | mgpp_stem_idx \- builds a stem index file
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| 11 | .SH SYNOPSIS
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| 12 | .B mgpp_stem_idx
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| 13 | [
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| 14 | .B \-h
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| 15 | ]
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| 16 | [
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| 17 | .BI \-b " entries-per-block"
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| 18 | ]
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| 19 | .if n .ti +12n
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| 20 | [
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| 21 | .BI \-a " stemmer"
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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 +12n
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| 27 | .B \-s 1|2|3
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| 28 | .BI \-f " name"
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| 29 | .SH DESCRIPTION
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| 30 | .B mgpp_stem_idx
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| 31 | generates a stem index file for a collection.
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| 32 | This program should be called three times: once for each
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| 33 | .B -s
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| 34 | parameter. It uses the stemmed dictionary to create the stem index which
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| 35 | contains pointers into the stemmed dictionary.
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| 36 | .SH OPTIONS
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| 37 | Options may appear in any order.
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| 38 | .TP "\w'\fB\-d\fP \fIdirectoryyyyyyyy\fP'u+2n"
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| 39 | .B \-h
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| 40 | This displays a usage line on
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| 41 | .IR stderr .
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| 42 | .TP
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| 43 | .BI \-b " entries-per-block"
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| 44 | The dictionary is stored in blocks on disk; this option is used to set
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| 45 | the number of entries per block. The default is 16.
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| 46 | .TP
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| 47 | .BI \-a " stemmer"
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| 48 | The name of the stemmer to use, the default is the Lovin stemmer.
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| 49 | .TP
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| 50 | .B -s 1|2|3
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| 51 | The stem method to apply for the stem index.
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| 52 | .br
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| 53 | 1 = casefolded and non-stemmed
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| 54 | .br
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| 55 | 2 = non-casefolded and stemmed
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| 56 | .br
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| 57 | 3 = casefolded and stemmed
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| 58 | .TP
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| 59 | .BI \-d " directory"
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| 60 | This specifies the directory where the document collection can be found.
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| 61 | .TP
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| 62 | .BI \-f " name"
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| 63 | This specifies the base name of the document collection.
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| 64 | .SH ENVIRONMENT
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| 65 | .TP "\w'\fBMGDATA\fP'u+2n"
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| 66 | .SB MGDATA
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| 67 | If this environment variable exists, then its value is used as the
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| 68 | default directory where the mgpp
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| 69 | collection files are. If this variable does not exist, then the
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| 70 | directory \*(lq\fB.\fP\*(rq is used by default. The command line
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| 71 | option
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| 72 | .BI \-d " directory"
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| 73 | overrides the directory in
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| 74 | .BR MGDATA .
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| 75 | .SH FILES
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| 76 | .TP 22
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| 77 | .B *.invf.dict
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| 78 | Compressed stemmed dictionary.
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| 79 | .TP
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| 80 | .B *.invf.dict.blocked.1
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| 81 | Stem index with stem index method 1.
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| 82 | .TP
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| 83 | .B *.invf.dict.blocked.2
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| 84 | Stem index with stem index method 2.
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| 85 | .TP
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| 86 | .B *.invf.dict.blocked.3
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| 87 | Stem index with stem index method 3.
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| 88 | .SH "SEE ALSO"
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| 89 | .na
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| 90 | .BR mgpp_compression_dict (1),
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| 91 | .BR mgpp_fast_comp_dict (1),
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| 92 | .BR mgpp_invf_dict (1),
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| 93 | .BR mgpp_passes (1),
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| 94 | .BR mgpp_perf_hash_build (1),
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| 95 | .BR mgpp_weights_build (1)
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