Risk Academy, a Nexortium programmeRisk Science and MethodsDepartment of Quantitative Risk Analysis

Indicator design, normalisation, weighting, aggregation and sensitivity analysis

Risk indicators and composite indices

A composite index is a chain of choices, and each choice can be tested.

risksacademy.comrisk-sciencediscipline

Risk indicators and composite indices, drawn as uncertainty bands: 0 primary courses open, 1 in preparation, 0 approved for authoring and 4 also taught here, across 8 subtopics. Courses: RAT-214 L2 in preparation, RAN-339 L3 also taught here, RAS-414 L2 also taught here, RAT-229 L2 also taught here, RAT-230 L2 also taught here.L1L2L3L420
Risk indicators and composite indices at a glance. Drawn as uncertainty bands.
  • Open, 0
  • In preparation, 1
  • Also taught here, 4
  • Subtopics, 8
Course codes from the curriculum; study levels L1 to L4.
Twin builder and simulatorThe central Apennines: L'Aquila, Amatrice and Norcia4 twin generators, 8 layers, 4 instruments
courses open now
0
in preparation
1
subtopics in its scope
8
reference earthquakes, M6.2 to M6.6
3

Twin figures for the central Apennines: L'Aquila, Amatrice and Norcia, counted from its layers at their stated dates.

Twin builder and simulator.

For Risk indicators and composite indices: the faculty's twin of L'Aquila on the planet map, the globe and in 3D. Pick a generator, switch layers, run the instruments; every layer prints its provider and date.

The central Apennines: L'Aquila, Amatrice and Norcia: a flat plan of the faculty twin. Terrain 24 to 2,805 m; 3 reference earthquakes, M6.2 to M6.6; Earthquakes M4.5 and above, past week (live): live, loads in the twin; USGS ShakeMap intensity contours: live, loads in the twin. Contours every 500 metres from the elevation grid; reference earthquakes as marks.
The central Apennines: L'Aquila, Amatrice and Norcia, Italy. Flat plan of the same data: relief, the three reference epicentres with magnitude and depth, and the numbers below; the sampler's figure shows one precomputed field with its parameters. The 3D twin opens on devices with WebGL once its data and library have been checked.
  • Terrain 24 to 2,805 m
  • 3 reference earthquakes, M6.2 to M6.6
  • Earthquakes M4.5 and above, past week (live): live, loads in the twin
  • USGS ShakeMap intensity contours: live, loads in the twin
Credits and dates per layer are listed under the stage. Relief in the twin is exaggerated ×1.5 for legibility.

Drag to move, right drag or Shift with a drag to turn and tilt, Ctrl with the wheel to zoom. Keyboard: arrows move, Shift with arrows turn and tilt, + and - zoom, 0 resets, V steps through the views, Escape clears.

Flat plan of the same data: relief, the three reference epicentres with magnitude and depth, and the numbers below; the sampler's figure shows one precomputed field with its parameters. The 3D twin opens on devices with WebGL once its data and library have been checked.

The map loads from this site as it nears the view (MapLibre 6.9.1, checked by hash).

The discipline in brief.

The discipline teaches indicator design, normalisation and weighting, aggregation, sensitivity and uncertainty analysis after the OECD and JRC Handbook on Constructing Composite Indicators (2008), data gaps and imputation, resilience measurement, and the communication of an index such as the INFORM Risk Index as published, never re-weighted; Italy's INFORM scores join the twin once their extract is committed. A graduate can build an index, show how much its ranking depends on each choice and present it without overstating what it shows.

This area covers how risk is summarised in indicators and composite indices: indicator selection, normalisation and weighting, aggregation, sensitivity and uncertainty analysis, data gaps, resilience measurement and the communication of indices such as the INFORM Risk Index without overstating what they show. It is taught in the department of Quantitative Risk Analysis, Faculty of Risk Science and Methods, through 1 course with it as primary discipline and 4 more that also teach it.

What the discipline covers.

8 subtopics, taught across its courses and labs.

Courses
0 open, 1 in preparation
Levels
L2 Intermediate
Labs
Map lab, Exposure lab, Network lab
  • Indicator design
  • Composite index construction
  • Normalisation and weighting
  • Sensitivity and uncertainty analysis
  • Risk indices such as INFORM
  • Resilience measurement
  • Data gaps and imputation
  • Communicating indices

What is changing now.

Recent developments in risk indicators and composite indices, each with its source; sources checked on 16 October 2026. Summaries are short readings of the source; follow the link for the full account.

The faculty hub.

News and research as they are published, per discipline, with the faculty's other tools.

The newest research, preprints, news and humanitarian reports for Risk indicators and composite indices, each with its source and date, load here. Open the research and news hub

The methods it teaches.

From the Academy's risk taxonomy: the discipline's own entries and those of its primary courses, with how many courses teach each.

Methods and practice

  1. Indicators and composite indices1 course
  2. Uncertainty and confidence1 course

Frameworks and standards

  1. INFORM Risk Index1 course

1 in preparation.

No course with this primary discipline is open yet; these are planned, so you can prepare with the courses also taught here.

Courses with this primary discipline0 open, 1 in preparation

  1. RAT-214Risk Indices and Composite IndicatorsIn preparationTechnical, L2 Intermediate, 10 hours (estimate)

How the subject is practised in labs.

LabWhat you do in itCourses using it
Map labRead hazard, exposure and boundaries on real maps4
Exposure labOverlay people and assets with hazard footprints2
Network labBuild dependency graphs, find critical nodes, trace cascades1

Courses from other disciplines.

These courses count in their own primary discipline and also teach this one; they do not count towards its achievement as primary courses.

What you can earn here.

Pathways that teach it.

Where the subject is worked on.

Cited as places where the subject is practised; the institutions named are sources here, and Risk Academy hosts every course.

The Foundry system where it is practised.

  • Nexus FoundryGRIx systemIndicators and composite indicesData room, Reports room

Nexus Foundry system pages describe what each system and its rooms are designed to do; they are not a service on offer, and studying here gives no access to them.

Terms used on this page.

Risk indicators and composite indices

Prepare with a related course.

Open courses in connected disciplines teach the methods this discipline will build on.

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