Self-Review
Question
Answer
6.6. Key Points in Chapter Six
What are categories?
Categories are equivalence classes: sets or groups of things or abstract entities that we treat the same.
What determines the size of the equivalence class?
The size of the equivalence class is determined by the properties or characteristics we consider.
What terms are typically used to describe the level of abstraction of a category?
We can describe category abstraction in terms of a hierarchy of superordinate, basic, and subordinate category levels.
What types of resource properties can be used to organize a collection?
Any particular collection of resources can be organized using a combination of intrinsic, extrinsic, static and dynamic resource properties.
How does the breadth of a category affect the recall/precision tradeoff?
Broader or coarse-grained categories increase recall, but lower precision.
What are so-called “classical categories”?
Classical categories can be defined precisely with just a few necessary and sufficient properties.
What can one say about any member of a classical ...
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