Granularity

Granularity is the extent to which a system is broken down into small parts, either the system itself or its description or observation. It is the extent to which a larger entity is subdivided. For example, a yard broken into inches has finer granularity than a yard broken into feet.

Coarse-grained systems consist of fewer, larger components than fine-grained systems; a coarse-grained description of a system regards large subcomponents while a fine-grained description regards smaller components of which the larger ones are composed.

The terms granularity, coarse, and fine are relative, used when comparing systems or descriptions of systems. An example of increasingly fine granularity: a list of nations in the United Nations, a list of all states/provinces in those nations, a list of all counties in those states, etc.

The terms fine and coarse are used consistently across fields, but the term granularity itself is not. For example, in investing, more granularity refers to more positions of smaller size, while photographic film that is more granular has fewer and larger chemical "grains".

Read more about Granularity:  Physics, Molecular Dynamics, Computing, Credit Portfolio Risk Management, Photographic Film, Business

Other articles related to "granularity":

Location-based Routing - Granularity
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Granularity - Business
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Film Grain - RMS Granularity
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Commons-based Peer Production - Principles
... Second, the granularity of the modules is essential ... Granularity refers to the degree to which objects are broken down into smaller pieces (module size) ... Different levels of granularity will allow people with different levels of motivation to work together by contributing small or large grained modules, consistent with their level of ...
Film Grain - Selwyn Granularity
... as Selwyn's law) that, for a not too small aperture, the product of RMS granularity and the square root of aperture area tends be independent of the aperture size ... The Selwyn granularity is defined as where σ is the RMS granularity and a is the aperture area ...