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

Word LookUp

Date Searching

Synonyms

Sorting Results

 

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

Command-Based Query

Command-Based 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 a command-based 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

Command-Based Query

Command-Based Operator Reference

 

Word LookUp

Your ISYS:web Administrator may have supplied you with some options to look for words in the ISYS:web index, that start with or sounds like the text you have entered.

To find a specific word in the Word LookUp:

  1. Type the word or part of a word you want to look up in the text box provided.
    e.g. tax
  2. Click the "Starts with" button.
  3. You can then select a word in the list box.

    e.g

  4. Click the "Fill input box" to add the word to the query input box.

Sounds Like

To find a word that sounds similar to the word you type:

  1. Type the word or part of a word you want to look up in the text box provided.
    e.g. kombinayshun
  2. Click the "Sounds Like" button
  3. You can then select a word in the list box.

    e.g.

  4. Click the "Fill input box" to add the word to the query input box.

See Also:

Menu-Assisted Query

Date Searching

If your ISYS:web Administrator selected the Intelligent Date Handling option when the index was created, then dates may be used in queries and will be located regardless of the form in which they are expressed in the query or in the document.

For the purposes of proximity searching, the entire date is considered to be a single hit, even if the date is actually expressed in three or four words. The exact location of the hit is taken to be that of the last component of the date. This is why only the final portion of the date sequence is highlighted in the ISYS:web browse page. Some examples of date searching:

20 September 1994
20/9/94
September 20, 1994

The BEFORE and AFTER operators are specifically designed for use with date searching. Several examples include:

BEFORE 25 Dec 1991
AFTER 08/25/93

Relative or implied dates are NOT supported, for example

March this year
two weeks from next Thursday
the second Friday in the month

Where a date is potentially ambiguous, 1-4-94 for example, ISYS:web resolves the day/month ambiguity according to the international settings of the ISYS:web server.

See Also:

Menu-Assisted Query

Menu-Assisted Operator Reference

Command-Based Query

Command-Based 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

Sorting Results

On your query page your ISYS:web Administrator may have given you the option to change the way the document list is sorted.

Select the sort method by choosing the list box check/radio button for the desired method followed by the OK button.

You may have all or some of the following options:

Default index order

Sorts documents by when they were indexed in the index. The documents most recently added to the index will appear first.

Number of hits

Lists documents by the number of hits. The documents with the greatest number of hits will appear first.

Size of document

Lists documents from the largest, in bytes, to the smallest.

Full path name

Lists the document path names alphabetically. Documents in the same directory are sorted alphabetically by file name.

File extension

Lists documents alphabetically by their three letter file name extension. Documents with the same extension are sorted by in the order they appear in the index (the default index order).

File name

Lists documents alphabetically by file name. Path names are not sorted.

File date

Lists documents according to their DOS date and time stamp, from newest to the oldest.

Relevancy

Lists documents by the density of hits (number of hits to document size ratio).


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