Reasoning with taskless BPMN
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This document discusses reasoning with taskless BPMN models. It argues that removing tasks from BPMN allows models to absorb more variety and complexity while dealing with uncertainty. Semantic technologies can enable open and natural descriptions as well as rule-based execution through inference. The goal is to develop leaner and more flexible BPMN models and an open enterprise architecture.
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Reasoning with taskless BPMN
- 1. Reasoning with Taskless BPMN Ivo Velitchkov | 18 April 2013
- 2. @kvistgaard Transformation State Why BPMN? Cybernetics Semantic technologies BPMN Variety Execution EA Why ST?
- 3. @kvistgaard
- 4. @kvistgaard - State - Transformation - Variety
- 10. @kvistgaard I know shapes I know colours I can change colours We can change shapes Transformation (knowledge- based) capabilitie s
- 11. @kvistgaard - State - Transformation - Variety
- 12. @kvistgaard horse walk -> trot -> canter -> gallop image source: http://commons.wikimedia.org/wiki/File:Muybridge_race_horse_gallop.jpg “By a state of a system is meant any well-defined condition or property that can be recognised if it occurs again.” (R. Ashby)
- 13. @kvistgaard transition transformatio n relative State also dynamic variety 12:30 = 06:03 walk -> trot -> canter -> gallop example: horse complexit y control
- 14. @kvistgaard tablet tablet handheld handheld read read* write write* clay {many} V1 < V2 Image source: http://www.katapi.org.uk/BibleMSS/ElAmarnaT.htm
- 17. @kvistgaard Transformation State Why BPMN? Cybernetics Semantic technologies BPMN Variety Execution EA Why ST?
- 18. Why BPMN? • 76 implementers • Increasing adoption • Problems with semantics of many elements (lanes, tasks, some gateways and events) • Very weak on data and rules • Can’t express many common situations, yet has enormous number of elements • Missing time dimension • Not suitable for knowledge processes • ….
- 19. @kvistgaard consensus coherence A C D G B Why BPMN? Based on Consensus/Coherence model of D. Snowden. Source: http://cognitive-edge.com
- 20. @kvistgaard “A Task is an atomic Activity within a Process flow. A Task is used when the work in the Process cannot be broken down to a finer level of detail. “ BPMN2.0, p. 156 …so you can’t Tasks are atomic
- 21. @kvistgaard Tasks try to restrict what should be done during run time with what is known during design time … and that’s often not much Tasks are restrictive
- 22. @kvistgaard Let’s see what will happen without BPMN tasks Task-free
- 23. @kvistgaard BPMN Without tasks, we’ll have… … a leaner BPMN
- 24. @kvistgaard Without tasks, our models can… ...absorb more variety
- 25. @kvistgaard “The definition of these states, e.g., possible values and any specific semantic are out of scope of this specification. Therefore, BPMN adopters can use the State element and the BPMN extensibility capabilities to define their states.”
- 26. @kvistgaard
- 27. @kvistgaard
- 28. @kvistgaard START C1 C2 C3 C4 END A B C 1. A in START 2. C1=true for A; B in START 3. A waiting for C3; C1=true for B 4. C3=true for A; C2=true for B; C in START
- 29. @kvistgaard [ 1 ] [ 2 ] [ 3 ] [ 4 ]
- 30. @kvistgaard
- 33. @kvistgaard …using only conditional events
- 34. @kvistgaard Two types of use cases so far: • Process improvement – Derive to-be models • But not from as-is, from ideal process (inspired by Ackoff ideal design) + constraints • Case management with some degree of uncertainty The first results
- 35. @kvistgaard Transformation State Why BPMN? Cybernetics Semantic technologies BPMN Variety Execution EA Why ST?
- 36. @kvistgaard • OPEN – Open world assumption – Open-source data • NATURAL – Descriptions are close to the natural language, yet understandable by machines – Rules are a natural part of the semantic web ecosystem Why using Semantic Technologies?
- 38. @kvistgaard [ ]
- 39. @kvistgaard A
- 41. @kvistgaard CLASSES PROPERTIES Core Civil Service Ontology
- 42. @kvistgaard Leaner and easier BPMN Can deal with more uncertainty Execution through inference Open Enterprise Architecture
Editor's Notes
- Sources:http://www.katapi.org.uk/BibleMSS/ElAmarnaT.htmhttp://reviews.cnet.com/google-nexus-7/(to be replaced with picture of mine, opened on the web page showing the other)
- Source of the fractal: http://www.wblut.com/2009/02/19/voronoi-fractal-21/
- Source: http://www.wblut.com/2009/02/19/voronoi-fractal-21/
- [] change underline
- Figure 10.51 DataObject Class DiagramStates Data Object elements can optionally reference a DataState element, which is the state of the data contained in the Data Object (see an example of DataStates used for Data Objects in Figure 7.8). The definition of these states, e.g., possible values and any specific semantic are out of scope of this specification. Therefore, BPMN adopters can use the State element and the BPMN extensibility capabilities to define their states.
- That’s a level up. A level down is quite similar – the conditions have different states
- It's actually Semantic Web technologies….