helping you to search

The search engine also enables you to search for keywords in a boolean way.

the search engine syntax

The boolean full-text search capability supports the following operators:

• + A leading plus sign indicates that this word must be present in every piece of information returned.
• - A leading minus sign indicates that this word must not be present in any piece of information returned.
• < > These two operators are used to change a word's contribution to the relevance value that is assigned to a piece of information. The << operator decreases the contribution and the >> operator increases it. See the example below.
• ( ) Parentheses are used to group words into subexpressions.
• ~ A leading tilde acts as a negation operator, causing the word's contribution to the information relevance to be negative. It's useful for marking noise words. A piece of information that contains such a word will be rated lower than others, but will not be excluded altogether, as it would be with the - operator.
• * An asterisk is the truncation operator. Unlike the other operators, it should be appended to the word, not prepended.
• " The phrase, that is enclosed in double quotes ", matches only pieces of information that contain this phrase literally, as it was typed.

some examples

The following are examples of the different searching expression that you would find usefull:

• Searching for apple banana find pieces of information that contain at least one of these words.
• Searching for +apple +juice find pieces of information that contain both words.
• Searching for +apple macintosh find pieces of information that contain word "apple", but rank it higher if it also contain "macintosh".
• Searching for +apple -macintosh find pieces of information that contain word "apple" but not "macintosh".
• Searching for +apple +(>pie <strudel) find pieces of information that contain "apple" and "pie", or "apple" and "strudel" (in any order), but rank "apple pie" higher than "apple strudel".
• Searching for apple* find pieces of information that contain "apple", "apples", "applesauce", and "applet".
• Searching for "some words" find pieces of information that contain "some words of wisdom", but not "some noise words".