Methods and standards
Countries can compare and combine their work only if they share methods. The Global Centre for Risk and Innovation (GCRI) stewards the methods and interoperability conventions of the Nexus Ecosystem: how evidence is labelled, how models are documented, how data moves between systems and how capacity is measured. These are working conventions for the programme. They are not certification, accreditation or a claim of conformity with any external standard, and completing a test or profile never implies one. Return to Nexus Ecosystem.
- 01In briefThe short answer
- 02Evidence methodologyEvery result carries one of nine labels
- 03InteroperabilityConventions that let work move between countries
- 04No implied certificationWhat these conventions are not
- 05Key termsTerms used on this page
- 06CollaborateWork with standards bodies and societies
GCRI · Institution · service level R0
The short answer.
Methods and standards in the Nexus Ecosystem are the working conventions GCRI stewards so that countries can compare and combine their work: how evidence is labelled, how models are documented, how data moves between systems and how capacity is measured. They are conventions for the programme, not certification, accreditation or a claim of compliance.
Landscapes and remoteness in the Caribbean.
Mountain ranges, deserts, wetlands, glaciers and reefs, and how remote each division is from large cities, shown for the Caribbean as an example geography for this subject.
Every result carries one of nine labels.
| Label | Meaning |
|---|---|
| Observed | Measured directly |
| Officially reported | Reported by a competent authority; a source type, not an endorsement |
| Institution-reported | Reported by a participating institution |
| Estimated | Derived from partial data with a stated method |
| Modelled | Produced by a documented model |
| Forecast | A model projection for a future period |
| Scenario | A plausible what-if, not a prediction |
| Expert judgement | Structured opinion with its basis |
| Unknown | Not known; never shown as zero |
Conventions that let work move between countries.
Canonical method pages
Each of the fifty-four methods has one canonical page in the STEM Commons.
Model and data cards
Data, model and software cards record purpose, inputs, validation, limits and version.
Source interfaces
Versioned source agreements, schema mappings and refresh and correction protocols with source agencies.
What these conventions are not.
Conventions make work comparable. They do not tell anyone that a product, person or institution meets a requirement.
- Test completion is never presented as accredited certification.
- External standards are named as references where relevant, never as claims of alignment or conformity.
- GCRI does not certify, license or approve products, people or institutions.
- A methods profile is reusable where licensed; it confers no status on those who use it.
Terms used on this page.
Each term as this page uses it. Where a standard-setting body defines the term, the wording follows that body.
| Term | Definition |
|---|---|
| Evidence label | A tag on an assertion naming the kind of evidence behind it, such as observed, officially reported or modelled. |
| Model card | A short document describing a model's intended use, training data, performance and limits. |
| Interoperability | The ability of health information systems to exchange data and use it with the same meaning, using standards such as HL7 FHIR. |
| Harmonisation | Adjusting data from different sensors so they can be combined consistently. |
Work with standards bodies and societies.
Standards bodies, metrology organizations and professional societies can propose methods or interoperability collaboration. The first outcome is a scoped profile, an interoperability protocol and reusable artifacts where licensed. Write to research@therisk.global. See also Methods and technical papers and the evidence and data standards of The Global Risks Alliance (GRA).
Questions and answers.
Can my organization claim it follows Nexus standards?
Does GCRI align with ISO or other standards?
Why not use a single risk index?
How are methods changed?
Around GCRI.
Start with an enquiry.
The current service level is R0: information and enquiries. An enquiry receives a reference and names the next step; applications, payments, compute allocations and registrations open only when their team, terms and review capacity exist.