In InaSAFE 4.0 age and gender ratios are specified as part of the aggregation layer metadata. A simple precedence based system is used to determine where ratios should be derived from. This is controllable in part by the options in the keywords wizard according to this logic:
InaSAFE will ensure that where ratios are interrelated (for example youth / adult / aged), their combined value will not be allowed to exceed 1.0.
We have also included detailed descriptions of each concept as shown in the accompanying screencast.
This feature was funded by DFAT/WB-GFDRR