Process Specification Language

The Process Specification Language (PSL) is a set of logic terms used to describe processes. The logic terms are specified in an ontology that provides a formal description of the components and their relationships that make up a process. The ontology was developed at the National Institute of Standards and Technology (NIST), and has been approved as an international standard in the document ISO 18629.

The Process Specification Language can be used for the representation of manufacturing, engineering and business processes, including production scheduling, process planning, workflow management, business process reengineering, simulation, process realization, process modelling, and project management. In the manufacturing domain, PSL's objective is to serve as a common representation for integrating several process-related applications throughout the manufacturing process life cycle.^[1]

Ontology

The foundation of the ontology of PSL is a set of primitive concepts (object, activity, activity_occurrence, timepoint), constants (inf+, inf-), functions (beginof, endof), and relations (occurrence_of, participates_in, between, before, exists_at, is_occurring_at). This core ontology is then used to describe more complex concepts.^[2] The ontology uses the Common Logic Interchange Format (CLIF) to represent the concepts, constants, functions, and relations.^[3]

This ontology provides a vocabulary of classes and relations for concepts at the ground level of event-instances, object-instances, and timepoints. PSL's top level is built around the following:^[4]

Activity, a class or type of action, such as install-part, which is the class of actions in which parts are installed
Activity-occurrence, an event or action that takes place at a specific place and time, such as a specific instance of install-part occurring at a specific timestamp
Timepoint, a point in time
Object, anything that is not a timepoint or an activity.

References

^ "Rationale". National Institute of Standards and Technology (NIST). 2007-01-15 [created 2003].
^ "PSL Core". National Institute of Standards and Technology (NIST). April 2008.
^ "PSL Ontology -- Current Theories and Extensions". National Institute of Standards and Technology (NIST). 2007-01-15 [created 2003]. Archived from the original on 30 December 2007.
^ Gangemi, A., Borgo, S., Catenacci, C., and Lehman, J. (2005). "Task taxonomies for knowledge content (deliverable D07)" (PDF). Laboratory for Applied Ontology (LOA).{{cite web}}: CS1 maint: multiple names: authors list (link)

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[1] "Rationale". National Institute of Standards and Technology (NIST). 2007-01-15 [created 2003].

[2] "PSL Core". National Institute of Standards and Technology (NIST). April 2008.

[3] "PSL Ontology -- Current Theories and Extensions". National Institute of Standards and Technology (NIST). 2007-01-15 [created 2003]. Archived from the original on 30 December 2007.

[D07_v21a-4] Gangemi, A., Borgo, S., Catenacci, C., and Lehman, J. (2005). "Task taxonomies for knowledge content (deliverable D07)" (PDF). Laboratory for Applied Ontology (LOA).{{cite web}}: CS1 maint: multiple names: authors list (link)

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20000–29999	20000 20022 20121 20400 20802 20830 21000 21001 21047 21122 21500 21827 22000 22275 22300 22301 22395 22537 23000 23003 23008 23009 23090-3 23092 23094-1 23094-2 23270 23271 23360 23941 24517 24613 24617 24707 24728 25178 25964 26000 26262 26300 26324 27000 series 27000 27001 27002 27005 27006 27729 28000 29110 29148 29199-2 29500
30000+	30170 31000 32000 37001 38500 39075 40500 42010 45001 50001 55000 56000 80000
Category

Ontology

See also

References