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Help and Support This forum has been set up to answer any support / help queries from users of the NTU SHARE Wiki.	1	Fri 14 of Aug, 2009 11:20 UTC Welcome by SarahHorrigan	1089
General Discussions This forum has been set up for general discussions related to the NTU SHARE project	4	Sun 18 of Apr, 2010 22:21 UTC Introduction by silicon	1791

+ : A leading plus sign indicates that this word must be present in every object returned.
- : A leading minus sign indicates that this word must not be present in any row returned.
By default (when neither plus nor minus is specified) the word is optional, but the object that contain it will be rated higher.
< > : These two operators are used to change a word's contribution to the relevance value that is assigned to a row.
( ) : Parentheses are used to group words into subexpressions.
~ : A leading tilde acts as a negation operator, causing the word's contribution to the object relevance to be negative. It's useful for marking noise words. An object 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 objects that contain this phrase literally, as it was typed.

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