Assurance case

NOT-STA - assurance case tool

NOR-STA is a web application
for assurance case management

  • develop your arguments
  • collect evidence
  • share with others
  • generate GSN diagrams
  • audit and assess
  • report the results

Develop arguments, don’t draw them

NOR-STA uses hierarchical assurance case notation which allows to develop argument structure in the editor without the need to draw it. When you need GSN diagrams you can generate them. The notation also complies with OMG SACM and ISO/IEC 15026.

Thanks to the notation you can easily manage large argument structures.

read more on NOR-STA notation

TCL notation for assurance cases
argument modules

Divide and rule with argument modules

Divide large arguments into modules and manage them separately. Use interfaces to manage binding modules. The assessment will be automatically reported to high-level argument modules. When necessary assurance cases can share modules.

You can also use modules to manage work in teams. For each module you can individualy assign permissions for users. .

Integrate your argument with evidence

Repositories like SharePoint, Confluence, Jira or SVN can be integrated with NOR-STA. That makes easier the evidence management.

Evidence plays the key role in assurance. Your argument specifies what evidence is required, you review it to assess the argument and you have to react when the evidence changes. What’s more some evidence may become outdates. You should track evidence validity and react when it changes.

evidence management
assurance case assessment

Argument assessment

  • integrated argument assessment functions
  • assessment methods include uncertainty, scoring and others
  • automatic aggregation of assessment results
  • reporting assessment results
  • control of negative and missing assessments

Reporting progress and results

  • assessment visualization with a color scale
  • customized reports to MS Excel, Word, PDF and HTML
  • report templates
  • programmable HTML reports with XSL scripts

assurance case reporting
NOR-STA permissions management

Users and permissions management

  • grant permissions to argumentation modules and folders
  • Role-based access control (RBAC)
  • customizable user roles
  • predefined roles like manager, editor, auditor, reader
  • 40 permissions to specific actions

Reuse with templates

  • create assurance cases based on a template
  • update arguments to new template versions
  • use multiple levels of templates

assurance case templates
assurance case change tracking

Change tracking

  • full change history
  • view snapshots of the argument for a given day
  • restore the argument for any day from a snapshot

Integration with other systems

  • Sharepoint
  • custom integration through NOR-STA API (web services)
  • ADFS / Azure AD user authentication
  • XML data import and export

NOR-STA integration

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