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Process Specification Language
open-in-new
<h2 id="ontology">Ontology</h2> <p>The foundation of the ontology of PSL is a set of primitive <a href="/facts/Concept/VWB6yhQp">concepts</a> (<i>object, activity, activity_occurrence, timepoint</i>), constants (<i>inf+, inf-</i>), functions (<i>beginof, endof</i>), and <a href="/facts/Relation_(mathematics)/HjblDaMy">relations</a> (<i>occurrence_of, participates_in, between, before, exists_at, is_occurring_at</i>). This core ontology is then used to describe more complex concepts.<a class="footnote-ref" id="fnref:2" href="#fn:2"><sup>2</sup></a> The ontology uses the <a href="/facts/Common_logic/U6FJjVaL">Common Logic Interchange Format</a> (CLIF) to represent the concepts, constants, functions, and relations.<a class="footnote-ref" id="fnref:3" href="#fn:3"><sup>3</sup></a> </p><p>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:<a class="footnote-ref" id="fnref:4" href="#fn:4"><sup>4</sup></a> </p> <ul><li>Activity, a class or type of action, such as install-part, which is the class of actions in which parts are installed</li> <li>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 <a href="/facts/Timestamp/6lApANE6">timestamp</a></li> <li>Timepoint, a point in time</li> <li>Object, anything that is not a timepoint or an activity.</li></ul> <h2 id="see-also">See also</h2> <ul><li><a href="/facts/ISO_TC_184/SC_4/SPY9fAbU">ISO TC 184/SC 4</a>, standards for industrial data</li> <li><a href="/facts/Process_ontology/3tQH3bAQ">Process ontology</a>, ontologies for processes</li></ul> <h2 id="references">References</h2> <ol> <li id="fn:1"><p>"Rationale". National Institute of Standards and Technology (NIST). 2007-01-15 [created 2003]. <a href="http://www.mel.nist.gov/psl/rationale.html" target="_blank">http://www.mel.nist.gov/psl/rationale.html</a> <a href="#fnref:1" class="footnote-back-ref">↩</a></p></li> <li id="fn:2"><p>"PSL Core". National Institute of Standards and Technology (NIST). April 2008. <a href="http://www.mel.nist.gov/psl/psl-ontology/psl_core.html" target="_blank">http://www.mel.nist.gov/psl/psl-ontology/psl_core.html</a> <a href="#fnref:2" class="footnote-back-ref">↩</a></p></li> <li id="fn:3"><p>"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. <a href="https://web.archive.org/web/20071230103337/http://www.mel.nist.gov/psl/ontology.html" target="_blank">https://web.archive.org/web/20071230103337/http://www.mel.nist.gov/psl/ontology.html</a> <a href="#fnref:3" class="footnote-back-ref">↩</a></p></li> <li id="fn:4"><p>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) <a href="http://www.loa-cnr.it/Papers/D07_v21a.pdf" target="_blank">http://www.loa-cnr.it/Papers/D07_v21a.pdf</a> <a href="#fnref:4" class="footnote-back-ref">↩</a></p></li> </ol>