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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_invf_dict.1 856 2000-01-14 02:26:25Z sjboddie $
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| 8 | .\"------------------------------------------------------------
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| 9 | .TH mg_invf_dict 1 \*(Dt CITRI
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| 10 | .SH NAME
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| 11 | mg_invf_dict \- build an `on-disk' stemmed dictionary
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| 12 | .SH SYNOPSIS
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| 13 | .B mg_invf_dict
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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 | .BI \-b " entries-per-block"
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| 19 | ]
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| 20 | .if n .ti +13n
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| 21 | [
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| 22 | .BI \-d " directory"
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| 23 | ]
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| 24 | .BI \-f " name"
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| 25 | .SH DESCRIPTION
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| 26 | .B mg_invf_dict
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| 27 | builds an `on-disk' stemmed dictionary from the
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| 28 | compressed stemmed dictionary that can be used during querying.
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| 29 | Each entry in the dictionary contains the disk
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| 30 | pointer to the associated inverted file entry, and various other pieces
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| 31 | of information about the stemmed word. The dictionary is blocked with
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| 32 | each block containing the same number of entries (not the same size).
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| 33 | .SH OPTIONS
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| 34 | Options may appear in any order.
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| 35 | .TP "\w'\fB\-d\fP \fIdirectoryyyyyyyy\fP'u+2n"
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| 36 | .B \-h
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| 37 | This displays a usage line on
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| 38 | .IR stderr .
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| 39 | .TP
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| 40 | .BI \-b " entries-per-block"
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| 41 | The dictionary is stored in blocks on disk; this option is used to
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| 42 | specify the number of entries per block. The default is 16.
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| 43 | .TP
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| 44 | .BI \-d " directory"
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| 45 | This specifies the directory where the document collection can be found.
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| 46 | .TP
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| 47 | .BI \-f " name"
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| 48 | This specifies the base name of the document collection.
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| 49 | .SH ENVIRONMENT
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| 50 | .TP "\w'\fBMGDATA\fP'u+2n"
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| 51 | .SB MGDATA
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| 52 | If this environment variable exists, then its value is used as the
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| 53 | default directory where the mg
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| 54 | collection files are. If this variable does not exist, then the
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| 55 | directory \*(lq\fB.\fP\*(rq is used by default. The command line
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| 56 | option
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| 57 | .BI \-d " directory"
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| 58 | overrides the directory in
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| 59 | .BR MGDATA .
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| 60 | .SH FILES
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| 61 | .TP 20
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| 62 | .B *.invf
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| 63 | Inverted file.
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| 64 | .TP
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| 65 | .B *.invf.dict
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| 66 | Compressed stemmed dictionary.
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| 67 | .TP
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| 68 | .B *.invf.dict.blocked
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| 69 | The `on-disk' stemmed dictionary.
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| 70 | .TP
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| 71 | .B *.invf.idx
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| 72 | The index into the inverted file.
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| 73 | .SH "SEE ALSO"
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| 74 | .na
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| 75 | .BR mg_compression_dict (1),
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| 76 | .BR mg_fast_comp_dict (1),
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| 77 | .BR mg_passes (1),
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| 78 | .BR mg_perf_hash_build (1),
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| 79 | .BR mg_stem_idx (1),
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| 80 | .BR mg_weights_build (1)
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