A relatively frequent problem when cross-classified data is needed (for example region <InlineEquation ID="IEq1"> <EquationSource Format="TEX">$$\times $$</EquationSource> <EquationSource Format="MATHML"> <math xmlns:xlink="http://www.w3.org/1999/xlink"> <mo>×</mo> </math> </EquationSource> </InlineEquation> industry) is that only aggregate (not cross-classified) data exists. Filling the gaps by combining data from diverse sources usually requires data conciliation. Ecological inference and...</equationsource></equationsource></inlineequation>