11.16.15 Specification rules for a synonym list definition file

(1) Specification example of a synonym list definition file

In this example, the following two synonym groups are registered in a synonym dictionary. The following describes an example of specifying the synonym list definition file.

• database,data bank,DB

• application server,AP server

<Specification example of a synonym list definition file>

database,data bank,DB↓
application server,AP server↓

Legend: ↓: Line feed

Explanation:

• If you perform a search by specifying one of database, data bank, and DB as the search-target character string, all of database, data bank, and DB are searched for as synonyms.

• If you perform a search by specifying one of application server and AP server as the search-target character string, all of application server, and AP server are searched for as synonyms.

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(2) Specification rules for a synonym list definition file

• Specify a synonym group per line.

• Specify individual synonyms by delimiting with a comma (,).

• Input a line feed at the end of each line (at the end of each synonym group). Also, input a line feed at the last line of the synonym list definition file. In the preceding example, you need to input a line feed after application server.

• Use as the linefeed code one from X'0A' (LF), X'0D0A' (CRLF), or X'00'.

• If there is a line on which no synonym is specified (a line that has only a line feed), execution of the adbsyndict command results in an error.

• Create a synonym list definition file by using the character encoding specified for environment variable ADBLANG.

• You can specify a character string consisting of 1 to 1,000 characters for a synonym.

• You can specify 2 to 1,000 synonyms for a synonym group.

• You can specify no more than 1,000,000 synonym groups.

• You cannot register a synonym that contains a horizontal tab X'09' (HT), line feed character X'0A' (LF), or X'00'.

• You can specify double quotation marks (") as enclosing characters. If a synonym contains ,, enclose the synonym by the enclosing characters.

• Half-width spaces before and after the synonym character string are not deleted. For example, if "∆ab∆c∆d∆∆" is specified, "∆ab∆c∆d∆∆" is registered as a synonym. ∆ indicates a half-width space.

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(3) Relationship between synonym list definition files and synonym dictionaries

Depending on the search conditions or contents of the search-target document data, you can create multiple synonym dictionaries and use them differently. When you create multiple synonym dictionaries, create a synonym list definition file per synonym dictionary.

For example, if you perform the following retrievals, create two synonym list definition files and two synonym dictionaries:

1. Retrieving sentence data that contains general terms for database

2. Retrieving sentence data by narrowing down the database type (for example, retrieving sentence data regarding relational database, or retrieving sentence data regarding NoSQL database)

■ Specification of the synonym list definition file (Terminology.txt) for the preceding item 1

database,data bank,DB,relational database,RDB,NoSQL database,No-SQL database,cloud database↓

Legend: ↓: Line feed

Create synonym dictionary Terminology by using this synonym list definition file. When retrieving sentence data that contains general terms for database, use synonym dictionary Terminology.

■ Specification of the synonym list definition file (Terminology_detail.txt) for the preceding item 2

relational database,RDB,relational data base↓
NoSQL database,No-SQL database,cloud database↓

Legend: ↓: Line feed

Create synonym dictionary Terminology_detail by using this synonym list definition file. When retrieving sentence data regarding relational database or sentence data regarding NoSQL database, use synonym dictionary Terminology_detail.

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