GRIx and data
GRIx is the data and evidence system of Nexus Foundry: it holds sources, an ontology that relates them, their temporal context, data rights and the lineage of every risk product built from them. The Global Centre for Risk and Innovation (GCRI) uses GRIx so that each figure can be traced to where it came from, when it was valid, who may use it and how it was transformed. Nexus indicators carry GRIx-native names and units, and none is published without its source. This page is part of science and methods.
- 01InstitutionThe Global Centre for Risk and Innovation (GCRI)
- 02Service levelR0: information and enquiries
- 03In briefThe short answer
- 04Five propertiesWhat GRIx records for every piece of data
- 05Analytical integrityRules that keep analysis honest
- 06Key termsTerms used on this page
- 07Where GRIx sitsOne system among twenty in Nexus Foundry
GCRI · Institution · service level R0
The short answer.
GRIx is the data and evidence system of Nexus Foundry: it holds sources, the ontology that relates them, their temporal context, data rights and the lineage of every risk product built from them. GCRI uses it so that each figure can be traced to where it came from, when it was valid, who may use it and how it was transformed.
Digital demand and connectivity in West Africa.
Urban demand centres and the hubs that anchor digital and data infrastructure, shown for West Africa as an example geography for this subject.
What GRIx records for every piece of data.
| Property | What it means | Why it matters |
|---|---|---|
| Source | The original owner and authority of the data | Original source authority is retained; Nexus estimates stay labelled as estimates |
| Ontology | How the data relates to systems, places and other sources | Data from different sectors can be combined without confusing meanings |
| Temporal context | When the data was observed, valid and updated | Old data is not presented as current |
| Data rights | Who may see, use and publish the data | Source rights and limitations persist through every product |
| Lineage | Every transformation from source to output | A result can be reproduced and checked |
Rules that keep analysis honest.
- 01
Evidence labels
Observed, officially reported, institution-reported, estimated, modelled, forecast, scenario, expert judgement or unknown.
- 02
Missing is missing
Gaps are shown as gaps, never filled with zero or silently imputed.
- 03
No borrowed indices
Nexus indicators use GRIx-native names and units, without invented values or third-party index names.
- 04
Fusion with care
When sources are combined, the uncertainty of each carries into the result.
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 |
|---|---|
| Data lineage | The traceable path of data from its origin through each transformation to its current form. |
| Controlled vocabulary | An agreed list of terms used to describe data consistently. |
| Data vintage | The release of a statistic, identified by date, since figures are revised after first publication. |
| Data provenance | A record of where data came from and how it was changed on its way to an analysis. |
One system among twenty in Nexus Foundry.
GRIx is one of the twenty Foundry systems, described at GRIx in Nexus Foundry. It works with EOP for Earth observation and DSS for scenarios. Released, rights-cleared datasets are listed under public data and datasets, and the methods behind data stewardship under data engineering, interoperability and stewardship.
Describing GRIx here does not mean a given dataset or service is available. Services follow the current service level, R0, information and enquiries.
Questions and answers.
Can I access data in GRIx?
What happens when a source is corrected?
Does GRIx store personal data?
Why not use well-known external risk indices?
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.