World Book - Encyclopedia of Science/WBScience.iso/DATA/books/20000d04/query/style/style.PRM

Text File | 2001-05-08 | 4KB | 78 lines

# $Id: style.prm,v 1.7 1996/09/15 00:36:13 bjohnson Exp $
# Copyright (C) 1987-1995 Verity, Inc.
#
# style.prm - collection schema parameters
#
# This file is used to enable/disable index schema features through
# macro definitions similar to those allowed by the C preprocesser.
# This file is included in other style files using $include so
# that the selected features are propogated to the schemas of all
# tables in the index.  Refer to the "Using the style.prm File"
# chapter in the Collection Buiding Guide for more information.

# -----------------------------------------------------------------
# The IDX-CONFIG parameter defines the storage format used to
# encode the word positions in the index.  WCT (Word Count) format
# is a compact format, storing the ordinal counting position of the
# word from the beginning of the document.  PSW (Paragraph, Sentence,
# Word) format takes approximately 15-20% more disk space, but
# stores semantically accurate paragraph and sentence boundaries.
# Optionally, Many may be specified with either WCT or PSW to
# improve the accuracy of the <MANY> operator at the expense of
# diskspace and search performance.

# This example enbles Word Count word position format (the default).
$define IDX-CONFIG      "WCT"

# This example turns on Paragraph/Sentence/Word word position format.
# It also enables the <MANY> operator accuracy improvement.
#$define IDX-CONFIG     "PSW Many"

# -----------------------------------------------------------------
# The IDXOPTS parameters define which index options are applied to
# the various index token tables.  The following index options are
# supported for each: Stemdex enables an index by the stem of each
# word. Casedex stores all case variants of a word separately, so
# one can search for case sensitive terms such as "Jobs", "Apple",
# and "NeXT" more easily. Soundex stores phonetic representations
# of the word, using AT&T's standard soundex algorithm.  The
# application may also store 1-4 bytes of application-specific
# data with each word instance, in the form of Location data and/or
# Qualify Instance data.  These options are specified separately
# for each token table: word, zone, and zone attribute.
$define    WORD-IDXOPTS    "Stemdex Casedex Soundex"
$define    ZONE-IDXOPTS    "Stemdex Casedex Soundex"
$define    ATTR-IDXOPTS    ""

# -----------------------------------------------------------------
# Clustering is enabled by uncommenting the DOC-FEATURES line.
# This stores a feature vector for each document in the
# Documents table.  These features are used for Clustering
# results and fast Query-by-Example.  See the discussions on
# Clustering in the Collection Building Guide for more information.
#$define DOC-FEATURES    "TF"

# -----------------------------------------------------------------
# Document Summarization is enabled by uncommenting one of
# the DOC-SUMMARIES lines below.  The summarization data is
# stored in the documents table so that it might easily be
# shown when displaying the results of a search.
# See the discussions on Document Summarization in the
# Collection Building Guide for more information.

# The example below stores the best three sentences of
# the document, but not more than 500 bytes.
#$define DOC-SUMMARIES   "XS MaxSents 3 MaxBytes 500"

# The example below stores the first four sentences of
# the document, but not more than 500 bytes.
#$define DOC-SUMMARIES   "LS MaxSents 4 MaxBytes 500"

# The example below stores the first 150 bytes of
# the document, with whitespace compressed.
#$define DOC-SUMMARIES   "LB MaxBytes 150"