TRAK Enterprise Architecture Metamodel

• SourceForge Project Summary

trakmetamodel Project

• Introduction
• Features
• Ontology - Metamodel Elements
• Open Source
• Download
• Get Support / Join
• Discussion Forums
• Report Bug
• Support Request
• Keep Informed

TRAK SourceForge Projects

Definition

• TRAK
• TRAK Metamodel
• TRAK Viewpoints

Implementation

• Implementations of TRAK
• UML Profile for TRAK
• Rail Symbols
• MDG Technology for TRAK (Sparx Enterprise Architect)
• TRAK MooD 2010 Template
• TRAK OmniGraffle Stencil
• TRAK Visio Template

TRAK Information

• TRAK - Important Ideas
• TRAK FAQs (SF - trak project)
• Projects Using TRAK
• Demo Model
• Supporting Links
• Blog - "The Residual World"
• TRAK Community Wiki
• Community Discussion Forums

 

 

 

 

 

 

 

 

 

 

Home > TRAK Metamodel Features > Claim, Argument and Evidence Tuples

Claim, Argument and Evidence (CAE) Tuples

Part of the TRAK Metamodel provides a way to describe Claims, Arguments and Evidence. This is typically used in assurance, for example, to describe how and why a requirement is met and how the design supports this. The application areas are therefore:-

• design verification or assurance
• safety assurance cases
• security assurance - to describe how the proposed design addresses threats (hazards) and mitigates the risks

TRAK Metamodel Tuples Involving Claim, Argument and Evidence

Establishing the Claim

The tuples that the TRAK metamodel provides to describe the Claim are:-

• the source of the Claim:
  • Organisation makes Claim
  • Role makes Claim
• the subject of the Claim:
  • Claim about Architecture Description Element (where Architecture Description Element = any element allowed in a TRAK view)
    • Claim about Contract, Requirement, Standard
    • Claim about System
    • Claim about Organisation
    • ...
• the Claim structure:
  • Claim has part Claim
  • Claim supports Claim
  • Claim opposes Claim (to describe a counter-claim)

Structuring the Argument

The tuples that the TRAK metamodel provides to describe the Argument are:-

• Argument supports Claim
• Argument opposes Claim
• Argument has part Argument
• Argument supports Argument
• Argument opposes Argument (to describe a counter-Argument)
• Architecture Description Element traces to Argument ( to show where the structure or relationship is a result of an Argument made)

Identifying Supporting Evidence

The tuples that the TRAK metamodel provides to describe the Evidence are:-

• Evidence supports Argument
• Evidence opposes Argument
• Evidence has part Evidence

and then if the Claim - Argument - Evidence chain is accepted by the assurer or regulator this can be recorded using:

• Evidence proves Claim or
• Evidence disproves Claim

Applicable TRAK Architecture Viewpoints

The applicable TRAK architecture viewpoints are:-

• MVp-04 Assurance - to describe the claim, argument and evidence
• MVp-03 Requirements & Standards - to describe the normative requirements from specifications, contracts, statutes (and what they govern)

Modification Date: December 28, 2021