The search engine has been upgraded to recognize two more entities, dollar amounts and times of day. Previously the engine recognized postal addresses, email addresses, zip codes, and phone numbers.
An entity stands for a class of items. When an entity is recognized, the search engine can match a query to any member of the class instead of just a keyword. For example, the query "license cost" matches documents that have the word "license" near a dollar amount (in addition to documents containing the word "license" near the word "cost". Similarly, a query "when does the store open" will match documents containing the words "store" and "open" near a time of day.
Monday, March 24, 2008
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