Dimensionality reduction with image data

A common objective in image analysis is dimensionality reduction. The most common often used data-exploratory technique with this objective is principal component analysis. We propose a new method based on the projection of the images as matrices after a Procrustes rotation and show that it leads to a better reconstruction of images

How to boost the PHD labour market? : facts from the PHD system side

OCDE publications in the early 1990s on Science-Technology-Economy alerted several member countries on the prediction of a future shortage of skilled researchers and its possible impact on the economy. Consequently, on the decade 1998-2009 the number of doctorates handed out in all OECD countries grew by 31%. Doctoral holders are not only the most qualified in terms of educational attainment, but also those who are specifically trained to conduct research. Although the unemployment rate for doctoral holders is stabilized around 3% since 2006, nowadays it is becoming more and more difficult for them to find a job corresponding to their qualification. The recruitment of PhD graduates in the private sector (business, industry) should be considered a key avenue in converting research into commercialized innovations, technological progress and productivity growth of the countries. Universities and R&D and innovation policy makers are committed in boosting the PhD labour market. This paper discusses the diagnosis of the situation of the PhD job market, the careers and mobility of doctorates holders along the OCDE countries. Having analyzed the employment of PhD holders in the private sector and bearing in mind that most of the doctoral programs conform to a classical old model, our interest is focused on exploring significant relationships between the intensity of graduate’s employment in private sector and new strategies implemented in recently upgraded doctoral systems. Conclusions relating recent reforms in the PhD system established in some OECD countries and their PhD labour market are stated out. In this study we make intensive use of the data collected through a collaborative project launched by the OECD with the UNESCO Institute for Statistics (UIS) and Eurostat (OECD/UIS/Eurostat project) aimed at developing internationally comparable indicators on the careers and mobility of doctorate holders in 2009, the CDH projec

Improving quality assessment of composite indicators in university rankings: a case study of French and German universities of excellence

Composite indicators play an essential role for benchmarking higher education institutions. One of the main sources of uncertainty building composite indicators and, undoubtedly, the most debated problem in building composite indicators is the weighting schemes (assigning weights to the simple indicators or subindicators) together with the aggregation schemes (final composite indicator formula). Except the ideal situation where weights are provided by the theory, there clearly is a need for improving quality assessment of the final rank linked with a fixed vector of weights. We propose to use simulation techniques to generate random perturbations around any initial vector of weights to obtain robust and reliable ranks allowing to rank universities in a range bracket. The proposed methodology is general enough to be applied no matter the weighting scheme used for the composite indicator. The immediate benefit achieved is a reduction of the uncertainty associated with the assessment of a specific rank which is not representative of the real performance of the university, and an improvement of the quality assessment of composite indicators used to rank. To illustrate the proposed methodology we rank the French and the German universities involved in their respective 2008 Excellence Initiatives

How to boost the PhD labour market? : facts from the R&D and innovation policies side

This paper analyzes the PhD labour market in connection to the Research and Innovation countries’ performance. Research and Innovation is essential for competitiveness in a global economy and doctorate holders have the skills and attributes to both engage in world-class research and make productive contributions in a wide spectrum of professional roles in innovation, in particular, in the private sector. However, in the recent literature little attention has been paid to measure the doctorate’s employment in the private sector, their role in the public-private research linkages and their effects on the innovation performance of the countries. The recruitment of PhD graduates in the private sector should be considered a key avenue in converting publicly funded basic research into commercialized innovations, technological progress and productivity growth. The aim of this paper is to examine which policies are boosting the PhD employment especially in the business sector and how these policies affect the research and innovation performance of the countries