2.12 System Parameters

2.12.1 General System Parameters

2.12.2 Default Index Parameters

2.12.2.1 CONTEXT Index Parameters

2.12.2.2 CTXCAT Index Parameters

2.12.2.3 CTXRULE Index Parameters

2.12.2.4 Viewing Default Values
< dd>2.12.2.5 Changing Default Values
3 CONTAINS Query Operators

3.1 Operator Precedence

3.1.1 Group 1 Operators

3.1.2 Group 2 Operators and Characters

3.1.3 Procedural Operators

3.1.4 Precedence Examples

3.1.5 Altering Precedence

ABOUT

ACCUMulate ( , )

AND (&)< /dd>
Broader Term (BT, BTG, BTP, BTI)

EQUIValence (=)< /a>

Fuzzy

HASPATH

INPATH

MDATA

MINUS (-)
Narrower Term (NT, NTG, NTP, NTI)

NEAR (;)
NOT (~)

OR (|)

Preferred Term (PT)

Related Term (RT)

soundex (!)

stem ($)

Stored Query Exp ression (SQE)

SYNonym (SYN)

threshold (> )

Translation Term (TR)

Translation Term Sy nonym (TRSYN)

Top Term (TT)

weight (*)< /dd>
wildcards (% _)

WITHIN

4 Special Characters in Queries< /a>

4.1 Grouping Characters

4.2 Escape Characters

4.2.1 Querying Escape Characters

4.3 Reserved Words and Characters

5 CTX_ADM Package

RECOVER

SET_PARAMETER

6 CTX_CLS Package

TRAIN

CLUSTERING

7 CTX_DDL Package

ADD_ATTR_SECTION

ADD_FIELD_SECTION

ADD_INDEX

ADD_MDATA

ADD_MDATA_SECTION

ADD_SPECIAL _SECTION

ADD_STOPCLASS

ADD_STOP_SECTION

ADD_STOPTHEME

ADD_STOPWORD

ADD_SUB_LEXER

ADD_ZONE_SECTION

CREATE_INDEX_SET

CREATE_POLICY

CREATE_PREFERENCE

CREATE_SECTION_GROUP

CREATE_STOPLIST

DROP_INDEX_SET

D ROP_POLICY

DROP_PREFERENCE

DROP_SECTION_G ROUP

DROP_STOPLIST

OPTIMIZE_INDEX

REMOVE_INDEX

REMOVE_MDATA

REMOVE_SECTION

REMOVE_STOPCLASS

REMOVE_STOPTHEME

REMOVE_STOPWORD

REPLACE_INDEX_METADATA

SET_ATTRIBUTE

SYNC_INDEX

UNSET_ATTRIBUTE

UPDATE_POLI CY

8 CTX_DOC Package

FILTER

GIST

HIGHLIGHT

IFILTER

MARKUP

PKENCODE

POLICY_FIL TER

POLICY_GIST

POLICY_HIGHLIGHT

POLICY_MARKUP

POLICY_THEMES

POLICY_TOKENS

SET_KEY_TYPE

THEMES

TOKENS

9 CTX_OUTPUT Package

ADD_EVENT

ADD_TRACE

END_LOG
END_QUERY_LOG
GET_TRACE_VALUE

LOG_TRACES

LOGFILENAME

REMOVE_EVENT

REMOVE_TRACE

RESET_TRA CE

START_LOG

START_QUERY_LOG

10 CTX_QUERY Package

BROWSE_WORDS

COUNT_HITS
EXPLAIN
HFEEDBACK

REMOVE_SQE

STORE_SQE

11 CTX_REPORT

11.1 Procedures in CTX_REPORT

11 .2 Using the Function Versions

DESCRIBE_INDEX

DESCRIBE_POLICY

CREATE_INDEX_SCRIPT

CREATE_POLICY_SCRIPT

INDEX_SIZE

IN DEX_STATS

QUERY_LOG_SUMMARY

TOKEN_INFO

TOKEN_TYPE

12 CTX_THES Package

ALTER_PHRASE

ALTER_THESAURUS

BT

BTG

BTI

BTP

CREATE_PHRASE

CREATE_RELATION

CREATE_THESAURUS

CREATE_TRANSLATION

DROP_PHRASE

DROP_RELATION

DROP_THESAURUS

DROP_TRANSLATION

HAS_RELATION

NT

NTG

NTI

NTP

OUTPUT_STYLE

PT

RT

SN

SYN

THES_TT

TR

TRSYN

TT

UPDAT E_TRANSLATION

13 CTX_ULEXER Package

WILDCARD_TAB

14 Executables

14.1 Thesaurus Loader (ctxload)

14.1.1 Text Loading

14.1.2 ctxload S yntax

14.1.2.1 Mandatory Arguments

14.1.2.2 Optional Arguments

14.1.3 ctxload Examples

1 4.1.3.1 Thesaurus Import Example

14.1.3.2 Thesaurus Ex port Example

14.2 Knowledge Base Extensio n Compiler (ctxkbtc)

14.2.1 Knowledge Base Characte r Set

14.2.2 ctxkbtc Syntax

14.2.3 ctxkbtc Usage Notes

14 .2.4 ctxkbtc Limitations

14.2.5 ctxkbtc Constraints on Thesaurus Terms

14.2.6 ctxkbtc Constraints on Thesaurus Rela tions

14.2.7 Extending the Knowledge Base

14.2.7.1 Example for Extending the Knowledge Base
< dd>14.2.8 Adding a Language-Specific Knowledge Base

14.2.8.1 Limitations for Adding a Knowledge Base

< a href="cexec.htm#sthref2138">14.2.9 Order of Precedence for Multiple Thesauri

14.2.10 Size Limits for Extended Knowledge Base

14.3 Lexical Compiler (ctxlc)

14.3.1 Syntax of ctxlc

14.3.1.1 Mandatory Arguments

14.3.1.2 Optional Arguments

14.3.2 Performance Considerations

14.3.3 ctxlc Usage Notes

14.3.4 Example

15 Alternative Spelling

15.1 Overview of Alternative Spelling Features

15.1.1 Alternate Spelling

15.1.2 Base-Letter Conversion
< dd>

15.1.2.1 Generic Versus Language-Specific Base-Letter Conver sions

15.1.3 New German Spelling

15.2 Overriding Alternative Spelling Features

15.2.1 Overriding Base-Letter Transformations with Alternate Spelling

15.3 Alternative Spelling Conventions

15.3.1 German Alternate Spelling Conventions

15.3.2 Danish Alternate Spelling Conventions

15.3.3 Swedish Alternate Spelling Conventions

A Result Tables

A.1 CTX_QUERY Result Tables

A.1.1 EXPLAIN Table

A.1.1.1 Operation Column Values

A.1.1.2 OPTIONS Column Valu es

A.1.2 HFEEDBACK Table

< a href="arestab.htm#sthref2227">A.1.2.1 Operation Column Values

A.1.2.2 OPTIONS Column Values

A.1 .2.3 CTX_FEEDBACK_TYPE

A.2 CTX_D OC Result Tables

A.2.1 Filter Table

A.2.2 Gist Table

A.2.3 Highlight Table

A.2.4 Markup Table

A.2.5 Theme Table

A.2.6 Token Table

A.3< /span> CTX_THES Result Tables and Data Types

A.3.1 EXP_TAB Table Type

B Supported Document Formats

B.1< /span> About Document Filtering Technology

B.1.1 Latest Updates for Patch Releases

B.1.2 Supported Platfor ms

B.1.2.1 Supported Platforms

B.1.3 Environment Variables

B.1.4 Requirements for UNIX Platforms

B.2 Supported Document Formats

B.2.1 Word Processing Formats - Generic Text

B.2.2 Word Processing Formats - DOS

B.2.3 Word Processing Fo rmats - Windows

B.2.4 Word Processing Formats - Macintosh< /a>

B.2.5 Spreadsheet Formats

B.2.6 Database Formats

B.2.7 Display Formats

B.2.8 Presentation Formats

B.2.9 Graphic Formats

B.2.10 Other Document Formats

B.3 Restrictions on Format Support

C Loading Examples

C.1 SQL INSERT Example

C.2 SQL*Loader Example

C.2.1 Creating the Table

C.2.2 Issuing the SQL*Loader Command

C.2.2.1 Example Control File: loader1.dat

C.2.2.2 Example Data File: loader2.dat

C.3 Structure of ctxload Thesaurus Import File

C.3.1 Alternate Hierarchy Structure

C.3.2 Usage Notes for Terms in Import Files

C.3.3 Usage Notes for Relationships in Import Files

C.3.4 Examples of Import Files

C.3.4.1 Exa mple 1 (Flat Structure)

C.3.4.2 Example 2 (Hierarchical)< /dd>
C.3.4.3 Example 3

D Multilingual Features
< dl>
D.1 Introduction

D.2 Indexing

D.2.1 Index Types

D.2.1.1 CONTEXT Index Type

D.2.1.2 CTXCAT Index Type

D.2.1.3 CTXRULE Index Type

D.2.2 Lexer Types

D.2.3 Basic Lexer Features< /a>

D.2.3.1 Theme Indexing

D.2.3.2 Alternate Spelling

D.2.3.3 Base Letter Conversion

D.2.3.4 Composite

D.2.3.5 Index stems

D.2.4 Multi Lexer Features

~~D.2.5 World Lexer Features~~

D. 3 Querying

D.3.1 ABOUT Operator

D.3.2 Fuzzy Operator

D.3.3 Stem Operator

~~D.4~~ Supplied Stop Lists

D.5 Knowledge Base

D.5.1 Knowledge Base Extension

D.6 Multi-Lingual Features Matrix

E Supplied Stoplists

E.1 English Default Stoplist

E.2 Chinese Stoplist (Traditional)

E.3 Chinese Stoplist (Simplified)

E.4 Danish (dk) Default Stoplist

E.5 Dutch (nl) Default Stoplist

E.6 Finnish (sf) Default Stoplist

E.7 French (f) Default Stoplist

E.8 German (d) Default Stoplist

E.9 Italian (i) De fault Stoplist

E.10 Portuguese (pt) Default Stoplist
E.11 Spanish (e) Default Stoplist

E.12 Swedish (s) Default Stoplist

F Scoring Algorithm

F.1 Scoring Algorithm for Word Queries

F.1.1 Example

F.1.2 DML and Scor ing

G Vi ews