Process ontology

In computer science, a process ontology is a description of the components and their relationships that make up a process. A formal process ontology is an ontology in the knowledge domain of processes. Often such ontologies take advantage of the benefits of an upper ontology. Planning software can be used to perform plan generation based on the formal description of the process and its constraints. Numerous efforts have been made to define a process/planning ontology.[1]

In philosophy, a process ontology refers to a universal model of the structure of the world as an ordered wholeness.[2][3] Such ontologies are Fundamental Ontologies, in contrast to the so-called Applied Ontologies. Fundamental ontologies do not claim to be accessible to any empirical proof in itself, but to be a structural design pattern, out of which empirical phenomena can be explained and put together consistently. Throughout Western history, the dominating fundamental ontology is the so-called substance theory. However, fundamental process ontologies are becoming more important in recent times, because the progress in the discovery of the foundations of physics spurred the development of a basic concept able to integrate such boundary notions as "Energy," "Object," and those of the physical dimensions of space and time.

Processes

A process may be defined as a set of transformations of input elements into output elements with specific properties, with the transformations characterized by parameters and constraints, such as in manufacturing or biology. A process may also be defined as the workflows and sequence of events inherent in processes such as manufacturing, engineering and business processes.

Ontologies

PSL

The Process Specification Language (PSL) is a process ontology developed for the formal description and modeling of basic manufacturing, engineering and business processes. 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]

Cyc

Main article: Cyc

In a process/planning ontology developed for the ontology Cyc, classes and relations above the ground level of PSL allow processes to be described purely at the type-level.[5][6] The ground level of PSL uses the primitives of event-instance, object-instance, and timepoint description. The types above the ground level of PSL have also been expressed in PSL, showing that the type-level and the ground level are relatively independent. The type-levels for the Cyc process ontology above this ground level use the following concepts:

SUPER and DDPO

The project SUPER[7] (Semantics Utilised for Process management within and between EnteRprises) has a goal of the definition of ontologies for Semantic Business Process Management (SBPM), but these ontologies can be reused in diverse environments. Part of this project is to define an Upper Process Ontology (UPO) that ties together all other SUPER ontologies. The results of the project SUPER include the UPO and a set of ontologies for processes and organizations.[8][9] Most of the ontologies are written in WSML, and some are also written in OCML.

A candidate model for the UPO was DDPO[10] (DOLCE+DnS Plan Ontology), a planning ontology which specifies plans and distinguishes between abstract and executable plans. DOLCE[11][12] (Descriptive Ontology for Linguistic and Cognitive Engineering) aims at capturing the ontological categories underlying natural language and human commonsense. DnS (Descriptions and Situations), is a constructivist ontology that allows for context-sensitive redescriptions of the types and relations postulated by other given ontologies (or ground vocabularies). Together in DDPO, DOLCE and DnS are used to build a Plan Ontology that includes physical and non-physical objects (social entities, mental objects and states, conceptualizations, information objects, constraints), events, states, regions, qualities, and constructivist situations. The main target of DDPO is tasks, namely the types of actions, their sequencing, and the controls performed on them.

oXPDL

The ontology oXPDL[13] is a process interchange ontology based on the standardised XML Process Definition Language (XPDL). The purpose of oXPDL is to model the semantics of XPDL process models in standardized Web ontology languages such as OWL and WSML, while incorporating features of existing standard ontologies such as PSL, RosettaNet, SUMO, and eClassOWL.

GFO

The General Formal Ontology[14][15] (GFO) is an ontology integrating processes and objects. GFO includes elaborations of categories like objects, processes, time and space, properties, relations, roles, functions, facts, and situations. GFO allows for different axiomatizations of its categories, such as the existence of atomic time-intervals vs. dense time. Two of the specialties of GFO are its account of persistence and its time model. Regarding persistence, the distinction between endurants (objects) and perdurants (processes) is made explicit within GFO by the introduction of a special category, a persistent. A persistant is a special category with the intention that its instances "remain identical" over time. With respect to time, time intervals are taken as primitive in GFO, and time-points (called "time boundaries") are derived. Moreover, time-points may coincide, which is convenient for modelling instantaneous changes.

m3po and m3pl

The multi metamodel process ontology[16][17] (m3po) combines workflows and choreography descriptions so that it can be used as a process interchange ontology. For internal business processes, Workflow Management Systems are used for process modelling and allow describing and executing business processes.[18] For external business processes, choreography descriptions are used to describe how business partners can cooperate. A choreography can be considered to be a view of an internal business process with the internal logic not visible, similar to public views on private workflows.[19][20][21] The m3po ontology unifies both internal and external business processes, combining reference models and languages from the workflow and choreography domains. The m3po ontology is written in WSML. The related ontology m3pl, written in PSL using the extension FLOWS (First Order Logic for Web Services), enables the extraction of choreography interfaces from workflow models.[22]

The m3po ontology combines features of the following reference models and languages:

The m3po ontology is organized using five key aspects of workflow specifications and workflow management.[23] Because different workflow models put a different emphasis on the five aspects, the most elaborate reference model for each aspect was used and combined into m3po.

See also

References

  1. Gangemi, A., Borgo, S., Catenacci, C., and Lehman, J. (2005). "Task taxonomies for knowledge content (deliverable D07)" (PDF). Laboratory for Applied Ontology (LOA). pp. 9–26.
  2. Rescher, Nicholas. "Process Philosophy". Stanford Encyclopedia of Philosophy.. Cf. Michel Weber (ed.), After Whitehead: Rescher on Process Metaphysics, Frankfurt / Paris / Lancaster, Ontos Verlag, 2004
  3. Sohst, Wolfgang (2009). Prozessontologie. Ein systematischer Entwurf der Entstehung von Existenz. Berlin. ISBN 978-3-936532-60-9.
  4. Gangemi, A., Borgo, S., Catenacci, C., and Lehman, J. (2005). "Task taxonomies for knowledge content (deliverable D07)" (PDF). Laboratory for Applied Ontology (LOA). p. 16.
  5. Aitken, Stuart (2001). "Process Representation and Planning in Cyc: From Scripts and Scenes to Constraints" (PDF). Artificial Intelligence Applications Institute (AIAI), University of Edinburgh.
  6. Aitken, Stuart; Curtis, Jon (2002). "Design of a Process Ontology: Vocabulary, Semantics, and Usage" (PDF). Knowledge Engineering and Knowledge Management: Ontologies and the Semantic Web. Lecture Notes in Computer Science. Berlin/Heidelberg: Springer. 2473: 263–270. doi:10.1007/3-540-45810-7_13. ISBN 978-3-540-44268-4.
  7. "Project IST 026850 SUPER: Business Process Ontology Framework (deliverable 1.1)" (PDF). Information Society Technologies (IST). May 2007.
  8. "SUPER Ontologies". Information Society Technologies (IST). 2008 or later. Check date values in: |date= (help)
  9. "Project IST 026850 SUPER: Process Ontology Stack, Evolved Version (deliverable 1.5)" (PDF). Information Society Technologies (IST). March 2009.
  10. Gangemi, A., Borgo, S., Catenacci, C., and Lehman, J. (2005). "Task taxonomies for knowledge content (deliverable D07)" (PDF). Laboratory for Applied Ontology (LOA). pp. 27–66.
  11. Masolo, Claudio; Borgo, Stefano; Gangemi, Aldo; Guarino, Nicola; Oltramari, Alessandro (c. 2002). "WonderWeb Deliverable D18: Ontology Library" (PDF). Laboratory for Applied Ontology (LOA).
  12. "DOLCE: a Descriptive Ontology for Linguistic and Cognitive Engineering". Laboratory for Applied Ontology (LOA).
  13. Haller, Armin; Marmolowski, Mateusz; Oren, Eyal; Gaaloul, Walid (April 2008). "A Process Ontology for Business Intelligence" (PDF). Digital Enterprise Research Institute (DERI).
  14. "General Formal Ontology (GFO)". University of Leipzig: Ontologies in Medicine and Life Sciences (Onto-Med).
  15. Herre, Heinrich (2010). "General Formal Ontology (GFO): A Foundational Ontology for Conceptual Modelling" (PDF). IMISE University of Leipzig: Research Department Ontologies in Medicine and Life Sciences (Onto-Med).
  16. Haller, Armin; Oren, Eyal (February 2006). "A process ontology to represent semantics of different process and choreography meta-models" (PDF). National University of Ireland, Galway: Digital Enterprise Research Institute (DERI).
  17. Haller, A.; Oren, E.; Kotinurmi, P. (September 2006). "m3po: An Ontology to Relate Choreographies to Workflow Models" (PDF). Proceedings of the 3rd International Conference on Services Computing (SCC).
  18. Georgakopoulos, D.; Hornick, M.; Sheth, A. (1995). "An overview of workflow management: From process modeling to workflow automation infrastructure". Distributed and Parallel Databases. 3 (2): 119–153. doi:10.1007/bf01277643.
  19. Chiu, D. K. W.; et al. (2004). "Workflow view driven cross-organizational interoperability in a web service environment". Inf. Tech. and Management. 5 (3-4): 221–250. doi:10.1023/b:item.0000031580.57966.d4.
  20. Dijkmanm, R.; Dumas, M. (December 2004). "Service-oriented design: A multi-viewpoint approach". International Journal of Cooperative Information Systems. 13 (4): 337–368. doi:10.1142/s0218843004001012.
  21. Schulz, K. A.; Orlowska, M. E. (2004). "Facilitating cross-organisational workflows with a workflow view approach". Data Knowl. Eng. 51 (1): 109–147. doi:10.1016/j.datak.2004.03.008.
  22. Haller, A.; Oren, E. (June 2006). "m3pl: A Work-FLOWS ontology extension to extract choreography interfaces" (PDF). Proceedings of the Workshop on Semantics for Business Process Management, in conjunction with ESWC2006. Budva, Montenegro.
  23. Jablonski, S.; Bussler, C. (1996). Workflow Management: Modeling Concepts, Architecture and Implementation. International Thomson Computer Press.

External links

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