##  [Classification](/classification-0) 

 Definition

The process of assigning a systematic class number or notation from a defined classification scheme to a resource in order to arrange and collocate items for physical or logical shelving, browse-based discovery, and high-level subject organization.

 

 

 

 

 

 





## Principle

Principle

A single primary classificatory location groups resources by an agreed analytic hierarchy so that arrangement and predictable collocation support browsing and contextual discovery, while detailed topical access is provided elsewhere (e.g., indexing).

 

 

 

 

 





## Demonstration

Demonstration

Illustrative scenario: A cataloger assigns a resource the class number from a standard scheme (for example, a cookery class under a universal classification). The resource is placed with other items in that class on the shelf or in a virtual browse view; a user browsing that class finds multiple related works by proximity rather than by keyword match.

 

 

 

 

## Misapplication

Misapplication

Treating classification as a substitute for subject indexing or keyword access. The semantic error is assuming a class notation alone provides granular topical retrieval for all user queries when classification primarily supports arrangement and coarse-grain subject grouping.

 

 

 

 

 





## Consequence

Consequence

Correct application produces predictable collocation and improved browse-based discovery; misuse yields poor findability for interdisciplinary or narrowly focused queries and can mislead users who expect exhaustive topical retrieval from class numbers.

 

 

 

 

## Reversal

Reversal

When resource organization is faceted, post-coordinated, or purely algorithmic (e.g., faceted metadata systems or dynamic virtual collections), a single hierarchical class may be insufficient or intentionally omitted; classification then becomes one of several organizing signals rather than the primary arranging principle.

 

 

 

 

 





## Boundary

Boundary

Clearly within: assigning a class notation that determines physical shelf placement or a principal browse node. Boundary case: a work with genuinely equal claim to multiple disciplines where a single primary class is chosen by policy. Clearly outside: creating subject headings, keywords, or tags intended primarily to support search relevance rather than arrangement.

 

 

 

 

 





## Semantic Tension

Semantic Tension

Arrangement (Classification) ↔ Access granularity (Indexing): the need for predictable collocation conflicts with the need for multiple, specific access points that reflect a work’s many aspects.

 

 

 

 

 





## Synthesis

Synthesis

Classification is an arrangement technology: it privileges a shared, stable order for browsing and curation at the cost of topical granularity, and thus works best when combined with indexing or facets that supply multi-dimensional access.