The vulnerability mapping represents the relationship between hazards and impacts and, if applicable, risk reduction measures. It is typically based on the vulnerability relationships in the CVI library developed in task 2.2, but any other source, e.g. from literature or expert opinion, can be used as well.
The mapping defines the state of the impact variable conditional on a combination of states of its parents. Such a mapping for an impact variable can be best made in excel following the steps 1-4.
- Make a column for each parent node in the same order in which they have been specified as "parents" in the Cnodes.json
- Write out all combinations of parent states. The states must change in the order in which they have been specified in their respective "bins" fields. Moreover, the states of the last parent must change fastest, then the ones of the second last, and so on until the first parent, whose states must change slowest.
- Indicate for each combination of parent nodes in which state the impact variable is in terms of its state index
- Copy the state indexes as a 1D array into the field "mapping" of the impact variable in the vulnerabilties.json files
Example 1: Relative damage to residential buildings
| State of "Sandbags" | Yes | Yes | Yes | Yes | No | No | No | No |
| State of "I_ResBuildings" | [0, 0.01] | [0.01, 0.5] | [0.5,1] | [1,2] | [0, 0.01] | [0.01, 0.5] | [0.5,1] | [1,2] |
| State Index of "RelDamage_ResBuildings" | 1 | 1 | 2 | 3 | 1 | 2 | 3 | 4 |
Example 2: Risk to Life
