Operator Precedence

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To Or is Human

Even if a search engine defaults to finding any of your query words, it may do a couple of other things that take precedence over the implied OR operation. Perhaps no other "advanced" search technique causes more trouble than the incorrect use of...

by Chris Sherman • Published April 8, 2002
Boolean Searching • Search Engines • Boolean Operators • Altavista • Xml • Gmt • Invisible Web • Inclusive Or • And Operator
In Praise of Fuzzy Searching

Then there's the little problem of operator precedence. NOT is the "strongest" operator, always evaluated before AND, just as AND takes precedence over OR. You can short circuit precedence by enclosing the part of the query you want evaluated first...

by Chris Sherman • Published June 5, 2001
Boolean Operators • Search Engine • Boolean Logic • Altavista • Link Popularity • Oxford American Dictionary • Fuzzy Logic • Probabilistic Algorithms • Link Analysis • Operator Precedence