Assessing the discriminative power of rating systems is an important question to banks and to regulators. In this article we analyze the Cumulative Accuracy Profile (CAP) and the Receiver Operating Characteristic (ROC) which are both commonly used in practice. We give a test-theoretic...

The figures published annually by the IAB concerning the stock of job vacancies across the economy could potentially provide information about the extent of mismatch unemployment that could be of value in terms of labour market diagnosis. This paper explains that the IAB figures on this do not,...

Das Institut für Arbeitsmarkt- und Berufsforschung (IAB) führt seit dem Jahr 1989 einmal jährlich eine repräsentative Erhebung des gesamtwirtschaftlichen Stellenangebots in Unternehmen und öffentlichen Verwaltungen Deutschlands durch. An der jüngsten Befragung im Herbst 2004 beteiligten...

Taking up the discussion surrounding the reliability of the IAB reports on the stock of vacancies in Germany in this journal (ZAF, issue 1/2005), this paper clears up misunderstandings, corrects incorrect statements, and presents further new arguments. The paper is intended to show that it would...

Wir konzentrieren unsere Anmerkungen auf den - nach Scherl - zentralen Punkt der Diskussion, nämlich die Frage, ob die Zahl der angebotenen 'sofort zu besetzenden Stellen' in der IAB-Erhebung korrekt erfasst wird. Des weiteren befassen wir uns mit dem ausgesprochenen Verdacht der...

The analysis of job tasks has become a field of growing scientific activity in recent years. Information on such tasks has been used to analyze various research questions, especially regarding changes in the overall structure of the economy and their implications for persons and firms. Arguably...

Data fusion techniques typically aim to achieve a complete data file from different sources which do not contain the same units. Traditionally, this is done on the basis of variables common to all files. It is well known that those approaches establish conditional independence of the specific...

This paper measures the performance of a Latent Class CBC model with aggregate real world scanning data.

The Workplace Employment Relations Survey series is a tremendously useful source of datafor industrial relations researchers. But, like all large-scale secondary datasets, it has anumber of design problems. These have not been articulated previously in much depth.Looking at the 2004 instalment...