We analyze the micro rationale of EU-sponsored collaborations compared to non-sponsored, spontaneous collaborations. We compare the incentives and coordination mechanisms of each type of collaboration, and derive propositions that we test empirically. Our econometric analysis uses recent data on...

In this paper, the problem of variable selection in classification is considered. On the basis of recent developments in model selection theory, we provide a criterion based on penalized empirical risk, where the penalization explicitly takes into account the number of variables of the...

In microarray experiments, accurate estimation of the gene variance is a key step in the identification of differentially expressed genes. Variance models go from the too stringent homoscedastic assumption to the overparameterized model assuming a specific variance for each gene. Between these...

J31, O33, C81.

We evaluate the impact of cooperation with public research institutions on firms' inno-vative activities in France and Germany, using data from the fourth Community Innova-tion Survey (CIS4). We propose an original econometric methodology, which explicitly takes into account potential estimation...

We analyze the relationship between firm size and innovation inputs in Taiwan. Two inputs are considered: R&D and technology imports. Building on an existing theoretical framework, we test this relationship by estimating bivariate Tobit models in twenty 2-digit industries, using a panel of...

We verify whether an income support policy for part-time workers in Belgium increases the transition from unemployment to non-subsidised, "regular" employment. Using a sample of 8630 long-term unemployed young women, whose labour market history is observed from 1998 to 2001, we implement the...

We verify whether an income support policy for part-time workers in Belgium increases the transition from unemployment to non-subsidised, “regular” employment. Using a sample of 8630 long-term unemployed young women, whose labour market history is observed from 1998 to 2001, we implement the...

Competition among producers within an integrated electricity system is impeded by any limited transmission capacity there may be at its borders. Two alternative market mechanisms have recently been designed to organize the allocation of scarce transmission capacity at cross-border level: (i) the...

Competition among producers within an integrated electricity system is impeded by any limited transmission capacity there may be at its borders. Two alternative market mechanisms have recently been designed to organize the allocation of scarce transmission capacity at cross-border level : (i)...