The Discipline of Organizing: Core Concepts Edition, 3rd Edition

Self-Review

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6.6. Key Points in Chapter Six

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What are categories?

Categories are equivalence classes: sets or groups of things or abstract entities that we treat the same.

(See §6.3.2, “Single Properties”)

What determines the size of the equivalence class?

The size of the equivalence class is determined by the properties or characteristics we consider.

(See §6.2, “The What and Why of Categories”)

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.

(See §6.4.1, “Category Abstraction and Granularity”)

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.

(See §6.4.3, “The Recall / Precision Tradeoff”)

What are so-called “classical categories”?

Classical categories can be defined precisely with just a few necessary and sufficient properties.

(See §6.4.2, “Basic or Natural Categories”)

What can one say about any member of a classical ...