US Patent 7555490 Text-based searches of numeric data

The present invention can allow a user to locate items in a database based on numeric characteristics of the items using words to describe those characteristics. In one embodiment, the invention includes selecting a numeric attribute of an item in a database of items some of which have values for the selected attribute, linking the numeric attribute to a descriptive word, linking the numeric attribute to a function, executing the function on values of the numeric attributes, and assigning a descriptive word to an item based on the results of the function.