[OWG Webinar] Conceptual Model of SE (Global meeting information included)
Anabel Fraga
Swaminathan Natarajan
Chief Scientist, TCS Research
Conceptual Model of SE
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Swami N
Here is the slide deck that I plan to use for the INCOSE Ontologies (& Knowledge Management) Working Group webinar tomorrow. The conceptual model includes an inquiry into how knowledge domains come together in systems, and ideas on how we can modularize ontologies, link them to system models, and create bridges between knowledge domains in the context of particular systems.
Topic: Conceptual Model of Systems Engineering
Date: 23 Feb 2018
Time: 1315 CET.
We are looking for collaborators on an INCOSE project to refine these initial ideas.
swami
Chief Scientist, TCS Research
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<Conceptual Model of SE v6.pdf>
Paola Di Maio
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Swami N
Thank you for attending the talk.
- Apologies for the lack of references. Some references that discuss related ideas would be Duane Hybertson's work on "Model-Oriented Systems Engineering Science", and Mobus & Kalton's "Principles of Systems Science", as well as, for example, Gharajedaghi's work on "Systems Thinking: Managing Chaos and Complexity". I did not specifically cite references because the work was more roughly based on typical ideas popular in the field (e.g. SEBoK) than on any specific set of ideas that we used as a starting point. We are currently working with Duane, George Mobus and others, working through synergies between our ideas and thinking.
- The "block" concept is taken from SysML, and is roughly the same as "module" or "component". Nothing to do with blockchain.
- The methodology and rationale was simply to see what foundational ideas were necessary to build a minimum understanding of how knowledge from multiple domains come together in a system. We discovered that if we look at different knowledge domains and how they relate to each other, the distinction between knowledge about wholes and knowledge about aspects is the most useful one for explaining how they fit with each other. So our choice of concepts was driven by the questions we asked and wanted to answer.
- Yes, systems engineering is a process. The conceptual framework presented can indeed be used to model this process and reason about it, and some of the slides towards the end, labelled "preliminary verification" present the results of our attempts to map the standard systems engineering process to the theory.
I hope the overall positioning of the work is clear. We are trying to inquire into the fundamental nature of systems, and particularly the relationships between systems and knowledge domains. We have arrived at simple conclusions:
- Systems consist of interacting wholes. There is knowledge about wholes, that includes knowledge about how wholes fit with each other (in terms of roles, with associated role profiles).
- Each whole has multiple aspects. Properties that we are interested in belong to aspects. We reason about these properties by projecting from the wholes to these aspects (producing views), and then using aspect domain knowledge to reason about how the properties of interest arise from the interacting wholes.
- There is also knowledge that is common to all systems, including knowledge about concurrency, variety, dynamics of networks of processes etc. Reasoning also requires the application of this knowledge, to make sure that the system behaves as we intend.
We are currently working through the relationship of these ideas to (a) systems science (b) SysML modelling and (c) knowledge representation using ontologies. We would welcome help from you and others in the group with (c), since we have limited background in structured knowledge representation and use.
Paola, I would be very happy to discuss and see if we can collaborate, particularly on developing an ontological model for systems engineering (which I think is one of your interests). Please let me know a convenient time, and I can call you to take this further.
Thanks, and warm regards,
swami
Chief Scientist, TCS Research
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Paola Di Maio
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Juan Llorens
Perfect interactions 😊)
I encourage all to carry on with contributions
Hugs
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