ISYS
Additional Query Features

Contents


There are several features which you can utilize with both simple and advanced queries.

Special Symbols * ! ~ +

Precedence of Operators

Using Parentheses in Queries

Synonyms

 

Special Symbols * ! ~ +

There are a number of special symbols which change the meaning of the words entered in a query. They are:

* or !

The * or ! symbols are wildcards and can be used to search for any number of significant characters. Only one wildcard can be used per word.

The * wildcard can be used at the beginning of a word. Note that the amount of time to complete the query will increase as the position of the * moves toward the beginning of the word.

The * wildcard can also be used on its own to select all documents in the index. Only the first word of each document will be highlighted.

~

The ~ symbol activates word tense conflation. Type the ~ immediately following the word, do not include a space.

By default, conflation is set to "off". Using this symbol in a query will turn it on for this word. Your ISYS:web Administrator may have set conflation to always turned "on", use this symbol to turn conflation off.

You can also use the conflation operator at the beginning of a word, or at both ends of word. With conflation set to always be "on" only activates trailing conflation because of the performance considerations associated with leading conflation.

+

The + symbol reverses the synonym expansion setting. Type the + immediately following the word, do not include a space.

When you enter a word into a query that is defined in a synonym ring, ISYS:web will also search for all other words in the ring.

By default, synonyms are turned on, using + will turn it off for a word. If your ISYS:web Administrator has changed the automatic synonym setting so that synonym expansion is "off", use + to turn it on.

See Also:

Synonyms

Menu-Assisted Query

Menu-Assisted Operator Reference

Advanced Search Query

Advanced Search Operator Reference

 

Precedence of operators

ISYS:web will assume a precedence, that is, an order for handling multiple operators in a complex query. The default precedence is:

  1. Phrases
  2. //, LABEL, IN, EXCEPT, TO, BEFORE, AFTER
  3. \\
  4. ..., .., AND, OR, NOT

Where a search expression, or portion of an expression, contains several operators of the same precedence, ISYS:web will process from left to right.

For example:

bonus AND manager OR supervisor

will be interpreted as find all documents that contain both bonus and manager OR those which contain supervisor.

To find documents that contain bonus and manager, OR supervisor, the query could be entered as:

manager OR supervisor AND bonus

Using Parentheses in Queries

When you enter an advanced search, you can control the order of precedence by using parentheses "( )". Just as we can use intonation in speech to clearly express a sentence that could be misinterpreted, we use parentheses to clearly express a query, overriding the ISYS:web defaults where necessary.

For example, the query:

car allowance // manager OR salesman

is interpreted using the default precedence as follows:

((car allowance) // manager) OR salesman

since the phrase car allowance has highest precedence, and the // or Near By operator has higher precedence than the OR operator.

To locate those documents containing the phrase car allowance in the same paragraph as either manager or salesman, use:

car allowance // (manager OR salesman)

Parentheses may be used anywhere sensible within a query. Examples include:

(manager OR supervisor) // bonus
the (quick OR slow) brown (fox OR kangaroo)
(manage* // (bonus OR reward) // paid) AND excess*
pet hates ... (alligator OR crocodile)
(Jones OR Smith)IN Author: AND media IN Subject:

 

See Also:

Menu-Assisted Query

Menu-Assisted Operator Reference

Advanced Search Query

Advanced Search Operator Reference

 

Synonyms

Synonyms are words or phrases with a similar meaning. Your ISYS:web Administrator may set group together similar words in a ring. for instance: "entrance", " foyer" and "doorway", or words that come under a general heading, as here:

In this diagram, the ring is called "Office Equipment". When you run a query using any of the words or phrases in the ring, ISYS:web will not only find all occurrences of "Office Equipment", but also all occurrences of " Table", "Desk", "Telephone", "Chair", "Filing Cabinet" and "Typewriter".

There may be the same word in more than one ring as shown below:

"Transportation", "Car", "Boat", "Plane", "Train"

"Car", "Coupe", "Sedan", "4WD"

In this case, if you search for the word "Car", ISYS:web will detect that "Car" is in two rings and use all the words in both rings.

When one of the words in a synonym ring is used in a query, ISYS:web will also retrieve all other words that appear in the ring if Synonym Expansion is turned on.

Synonym expansion is controlled by both the + synonym operator and the automatic synonym expansion setting which is set by your ISYS:web Administrator.

See Also:

Special Symbols


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