Model concept, solver and details - WITNESS - Revision history

Thierry Chevalier at 09:50, 26 December 2024

2024-12-26T09:50:03Z

← Older revision		Revision as of 11:50, 26 December 2024
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	= Modelisation concept =		= Modelisation concept =
	WITNESS applies complex [[wikipedia:System_of_systems\|system of systems]] (1) simulation techniques to IAM modelling , applying a [[wikipedia:Systems engineering\|system engineering]] approach starting from the high level systems (economy, energy, resources, climate, population…) and their interactions, and applying [[wikipedia:Fixed-point_iteration\|fixed point algorithms]] to find equilibrium between systems (see [https://www.witness4climate.org/files/posterformat.pdf here])		WITNESS applies complex [[wikipedia:System_of_systems\|system of systems]] (1) simulation techniques to IAM modelling , applying a [[wikipedia:Systems engineering\|system engineering]] approach starting from the high level systems (economy, energy, resources, climate, population…) and their interactions, and applying [[wikipedia:Fixed-point_iteration\|fixed point algorithms]] to find equilibrium between systems (see [https://www.witness4climate.org/files/posterformat.pdf here] poster presented on that topic at IAMC'24)

	From an implementation point of view, we will define [[wikipedia:Namespace\|namespaces]] within which sub-system models will interact and exchange. An [[wikipedia:Ontology (information science)\|ontology]] is also defined to formalize all modules and parameter's names.		From an implementation point of view, we will define [[wikipedia:Namespace\|namespaces]] within which sub-system models will interact and exchange. An [[wikipedia:Ontology (information science)\|ontology]] is also defined to formalize all modules and parameter's names.

Thierry Chevalier at 09:47, 26 December 2024

2024-12-26T09:47:52Z

← Older revision		Revision as of 11:47, 26 December 2024
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	= Modelisation concept =		= Modelisation concept =
	WITNESS applies complex [[wikipedia:System_of_systems\|system of systems]] (1) simulation techniques to IAM modelling , applying a [[wikipedia:Systems engineering\|system engineering]] approach starting from the high level systems (economy, energy, resources, climate, population…) and their interactions, and applying [[wikipedia:Fixed-point_iteration\|fixed point algorithms]] to find equilibrium between systems.		WITNESS applies complex [[wikipedia:System_of_systems\|system of systems]] (1) simulation techniques to IAM modelling , applying a [[wikipedia:Systems engineering\|system engineering]] approach starting from the high level systems (economy, energy, resources, climate, population…) and their interactions, and applying [[wikipedia:Fixed-point_iteration\|fixed point algorithms]] to find equilibrium between systems (see [https://www.witness4climate.org/files/posterformat.pdf here])

	From an implementation point of view, we will define [[wikipedia:Namespace\|namespaces]] within which sub-system models will interact and exchange. An [[wikipedia:Ontology (information science)\|ontology]] is also defined to formalize all modules and parameter's names.		From an implementation point of view, we will define [[wikipedia:Namespace\|namespaces]] within which sub-system models will interact and exchange. An [[wikipedia:Ontology (information science)\|ontology]] is also defined to formalize all modules and parameter's names.

Thierry Chevalier at 08:44, 24 September 2024

2024-09-24T08:44:35Z

← Older revision		Revision as of 10:44, 24 September 2024
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	= Modelisation concept =		= Modelisation concept =
	WITNESS applies complex [[wikipedia:System_of_systems\|system of systems]] (1) simulation techniques to IAM modelling , applying a [[wikipedia:Systems engineering\|system engineering]] approach starting from the high level systems (economy, energy, resources, climate, population…) and their interactions, and applying [[wikipedia:Fixed-point_iteration\|fixed point ~~algorithm~~]] to find equilibrium between systems.		WITNESS applies complex [[wikipedia:System_of_systems\|system of systems]] (1) simulation techniques to IAM modelling , applying a [[wikipedia:Systems engineering\|system engineering]] approach starting from the high level systems (economy, energy, resources, climate, population…) and their interactions, and applying [[wikipedia:Fixed-point_iteration\|fixed point algorithms]] to find equilibrium between systems.

	From an implementation point of view, we will define [[wikipedia:Namespace\|namespaces]] within which sub-system models will interact and exchange. An [[wikipedia:Ontology (information science)\|ontology]] is also defined to formalize all modules and parameter's names.		From an implementation point of view, we will define [[wikipedia:Namespace\|namespaces]] within which sub-system models will interact and exchange. An [[wikipedia:Ontology (information science)\|ontology]] is also defined to formalize all modules and parameter's names.
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	You can also decide to replace in some area the driver running multidisciplinary analysis (MDA), by a controller running multi-disciplinary optimization (MDO) of you want to orient the result vs an objective or want to respect specific constraints.		You can also decide to replace in some area the driver running multidisciplinary analysis (MDA), by a controller running multi-disciplinary optimization (MDO) of you want to orient the result vs an objective or want to respect specific constraints.

	For example in the basic WITNESS framework, an MDO controller is optimizing ventilation of available investment from Macro-economy to various Energy production techniques in Energy system, in order to maximize energy production while minimizing emissions under resources and materials contraints (more details [[/www.witness4climate.org/optimizing-investments-in-energy-production-technology/\|here]]).		For example in the basic WITNESS framework, an MDO controller is optimizing ventilation of available investment from Macro-economy to various Energy production techniques in Energy system, in order to maximize energy production while minimizing emissions under resources and materials contraints (more details [https://www.witness4climate.org/optimizing-investments-in-energy-production-technology/ here]).

	= Solver =		= Solver =

Thierry Chevalier at 08:41, 24 September 2024

2024-09-24T08:41:04Z

← Older revision		Revision as of 10:41, 24 September 2024
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	= Modelisation concept =		= Modelisation concept =
	WITNESS applies complex [[wikipedia:System_of_systems\|system of systems]] (1) simulation techniques to IAM modelling , applying a [[wikipedia:Systems engineering\|system engineering]] approach starting from the high level systems (economy, energy, resources, climate, population…) and their interactions.		WITNESS applies complex [[wikipedia:System_of_systems\|system of systems]] (1) simulation techniques to IAM modelling , applying a [[wikipedia:Systems engineering\|system engineering]] approach starting from the high level systems (economy, energy, resources, climate, population…) and their interactions, and applying [[wikipedia:Fixed-point_iteration\|fixed point algorithm]] to find equilibrium between systems.

	From an implementation point of view, we will define [[wikipedia:Namespace\|namespaces]] within which sub-system models will interact and exchange. An [[wikipedia:Ontology (information science)\|ontology]] is also defined to formalize all modules and parameter's names.		From an implementation point of view, we will define [[wikipedia:Namespace\|namespaces]] within which sub-system models will interact and exchange. An [[wikipedia:Ontology (information science)\|ontology]] is also defined to formalize all modules and parameter's names.
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	Going down recursively refining each system is similar, you will define sub-namespaces for each sub-system you identify to further refine it if needed, and you will define your current systems interfaces to let them be automatically be coupled through the ontology in your current namespace.		Going down recursively refining each system is similar, you will define sub-namespaces for each sub-system you identify to further refine it if needed, and you will define your current systems interfaces to let them be automatically be coupled through the ontology in your current namespace.


	This methodology allow for easy refinement of models as the models interconnexions are prescriptive (expose interfaces in specific namespaces) but not descriptive (connections handling is automated an holistic within namespace).		This methodology allow for easy refinement of models as the models interconnexions are prescriptive (expose interfaces in specific namespaces) but not descriptive (connections handling is automated an holistic within namespace).

Thierry Chevalier: v2 rewrite as stored in external repository after v1 mostly lost and no backup :-(

2024-08-22T10:22:12Z

v2 rewrite as stored in external repository after v1 mostly lost and no backup :-(

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 |IsDocumentationOf=WITNESS
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Mathijs Harmsen: Edited automatically from page WITNESS setup.

2023-08-24T16:43:15Z

Edited automatically from page WITNESS setup.

New page

{{ModelDocumentationTemplate
|IsDocumentationOf=WITNESS
|DocumentationCategory=Model concept, solver and details
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