Task Chains  

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Task Chains


Reference /Scacchi, 2001/ Process Models in Software Engineering
Task chains represent a non-linear sequence of actions that structure and transform available computational objects (resources) into intermediate or finished products. Non-linearity implies that the sequence of actions may be non-deterministic, iterative, accommodate multiple/parallel alternatives, as well as partially ordered to account for incremental progress. Task actions in turn can be viewed a non-linear sequences of primitive actions which denote atomic units of computing work, such as user's selection of a command or menu entry using mouse or keyboard. Winograd and others have referred to these units of cooperative work between people and computers as "structured discourses of work" /Winograd, 1986/, while task chains have become popularized under the name of "workflow" /Bolcer, 1998/.

Task chains can be employed to characterize either prescriptive or descriptive actions sequences.

See also

Descriptive Task Chains
Prescriptive Task Chains
Articulation Work
Process Model

GDPA Online Last Updated 29.May.2002 Updated by Webmaster Last Revised 29.May.2002 Revised by Webmaster