The agreed definition of unemployed is as above, and it's a matter of national policy of exactly what "actively sought work" means, as the document linked to discusses. The ILO guidelines are subject to interpretation in several places. Incidentially, I don't think the ILO have numbers - they use the numbers compiled by the national labour surveys with various corrections based on data available in the surveys.
The ILO requirements don't even tie down the two-week vs. one-week availability issue. I'm reasonably certain that no-one corrects for these things because no-one knows how to.
