Submissions:Transition
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General description
| Name: | Transition |
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| Submitted by: | AldoGangemi |
| Also Known As: | |
| Intent: | To represent basic knowledge about transitions (events, states, processes, objects). |
| Domains: | |
| Competency Questions: |
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| Solution description: | This pattern composes the Time-indexed participation, Region, and Sequence patterns in order to represent changing of states for objects, fired by some event, through an underlying process. |
| Reusable OWL Building Block: | http://ontologydesignpatterns.org/cp/owl/transition.owl (1047) |
| Consequences: | We are able to represent part of the semantics involved in transitions (e.g. what is implied by Petri Nets): initial and final states, causal events, underlying processes, affected objects, and sequences of time intervals for situations and events.
However, it is not possible to define axioms for automatically infer initial and final states from time sequences, because coreference is not allowed in OWL (not even in OWL2). |
| Scenarios: | The addition of Bud Powell on piano made the tune jump from a static, aerial comping into a hard driving swing improvisation |
| Known Uses: | |
| Web References: | |
| Other References: | |
| Examples (OWL files): | |
| Extracted From: | |
| Reengineered From: | |
| Has Components: | |
| Specialization Of: | |
| Related CPs: |
Elements
The Transition Content OP locally defines the following ontology elements:
hasEventAtTime (owl:ObjectProperty) The time of the event causing the transition.
hasEventAtTime page hasFinalStateAtTime (owl:ObjectProperty) The time of the final state of the transition.
hasFinalStateAtTime page hasInitialStateAtTime (owl:ObjectProperty) The time of the initial state in the transition.
hasInitialStateAtTime page includesFinalSituation (owl:ObjectProperty) A relation between a transition situation and the situation resulting from the transition.
includesFinalSituation page includesInitialSituation (owl:ObjectProperty) A relation between a transition situation and the situation existing before the transition event.
includesInitialSituation page includesProcess (owl:ObjectProperty) A relation between a transition situation and the underlying process that is invariant for the object(s) included in the transition.
includesProcess page isFinalSituationIncludedIn (owl:ObjectProperty) A relation between a transition situation and the situation resulting from the transition.
isFinalSituationIncludedIn page isInitialSituationIncludedIn (owl:ObjectProperty) A relation between a transition situation and the situation existing before the transition event.
isInitialSituationIncludedIn page isProcessIncludedIn (owl:ObjectProperty) A relation between a transition situation and the underlying process that is invariant for the object(s) included in the transition.
isProcessIncludedIn page
Process (owl:Class) The invariance under some different transitions (including the one represented here), in which at least one Object is situated.
Process page Transition (owl:Class) In this pattern, it is the entity that is invariant across the Process underlying the transition, but is also changed from an initial to a final state by an Event.
A transition is a Situation that creates a context for three TimeInterval(s), two additional different Situation(s), one Event, one Process, and at least one Object: the Event is observed as the cause for the transition, one Situation is the state before the transition, the second Situation is the state after the transition, the Process is the invariance under some different transitions (including the one represented here), in which at least one Object is situated. Finally, the time intervals position the situations and the transitional event in time.
This class of situations partly encodes the ontology underlying typical engineering algebras for processes, e.g. Petri Nets.
A full representation of the transition ontology is outside the expressivity of OWL, because we would need qualified cardinality restrictions, coreference, property equivalence, and property composition.
Transition pageAdditional information
A simple pattern to represent transitions between states.
Scenarios
No scenario is added to this Content OP.
Reviews
There is no review about this proposal. This revision (revision ID 9137) takes in account the reviews: none
Other info at evaluation tab
Modeling issues
There is no Modeling issue related to this proposal.
References
