Chapter 13. Identifying Knowledge
Knowledge is of but two kinds. We know a subject ourselves, or we know where we can find information upon it.
—Samuel Johnson, letter to James MacPherson
Most knowledge attributes are fairly easy to identify because they describe physical properties of inanimate objects in the problem space. Thus notions like color, length, and part number are easily recognized and abstracted as attributes. The next tier of attributes contains mildly conceptual but commonly used aggregates, such as address, a combination of street, city, and state; name, a combination of given and family names for a person; and location, a set of coordinates. Since they are commonly used in the problem space, they are also usually easy to ...
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