I have lost with attempt to find what is CD index. I suppose something might be wrong with the metrique. If you have read the paper and realize that something excternal is needed to understand it, why you did not tell this?
hey, my question was about the substance (i.e. how to accelerate progress) and not the form (research method), even if the two are not inseparable. (And precisely, the CD index is created within the article to measure the innovative impact of the productions).