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Attributes as measures

An attribute, together with the range of values it may take, constitutes a measure of a system's adequacy with respect to that attribute.

For example, one attribute of spelling checkers which is very likely to be of interest is the size of the dictionary it uses. An intuitively useful range of values for that attribute is the set of integers, here representing the number of entries in the system's dictionary. The system's adequacy with respect to dictionary size is measured by the number of entries in the dictionary.



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