Publications des institutions partenaires

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A finder and representation system for knowledge carriers based on granular computing

In one of his publications Aristotle states ”All human beings by their nature desire to know” [Kraut 1991]. This desire is initiated the day we are born and accompanies us for the rest of our life. While at a young age our parents serve as one of the principle sources for knowledge, this changes over the course of time. Technological advances and particularly the introduction of the...

Institution partenaire

Université de Fribourg

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English / 07/06/2017

Brain versus brawn: the realization of women's comparative advantage

In the last decades the US economy experienced a rise in female labor force participation, a reversal of the gender education gap and a closing of the gender wage gap. Importantly, these changes occurred at a substantially different pace over time. During the same period, workers in the US faced a considerable shift in labor demand from more physical to more intellectual skill...

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English / 01/06/2017

Systematic consumption risk in currency returns

We sort currencies into portfolios by countries’ past consumption growth. The excess return of the highest- over the lowest-consumption-growth portfolio – our consumption carry factor – compensates for negative returns during world-wide downturns and prices the cross-section of portfolio-sorted and of bilateral currency returns. Empirically, sorting currencies on consumption growth...

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English / 01/06/2017

Voting with public information

We study the effect of public information on collective decision-making in committees, where members can have both common and conflicting interests. In the presence of public information, the simple and efficient vote-your-signal strategy profile no longer constitutes an equilibrium under the commonly-used simultaneous voting rules, while the intuitive but inefficient follow-the-...

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English / 01/06/2017

On linear transformations of intersections

For any linear transformation and two convex closed sets, we provide necessary and sufficient conditions for when the transformation of the intersection of the sets coincides with the intersection of their images. We also identify analogous conditions for non-convex sets, general transformations, and multiple sets. We demonstrate the usefulness of our results via an application to...

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English / 01/06/2017

Inducing variety: a theory of innovation contests

This paper analyzes the design of innovation contests when the quality of an innovation depends on the research approach, but the best approach is unknown. Inducing a variety of research approaches is desirable because it generates an option value. We show that suitable contests can induce such variety. The optimal contest is a bonus tournament, where suppliers can choose only...

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English / 01/06/2017

Job mobility and creative destruction: flexicurity in the land of Schumpeter

This paper evaluates the 2003 Austrian severance-pay reform, often advocated as a role model for structural reforms in countries plagued by inflexible labor markets and high unemployment. The reform replaced a system with tenure-based severance payments after a layoff (but not after a quit) by payments into pension accounts that accrue to workers after a layoff as well as after a...

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English / 01/06/2017

Gender differences in willingness to compete: the role of public observability

A recent literature emphasizes the importance of the gender gap in willingness to compete as a partial explanation for gender differences in labor market outcomes. However, whereas experiments investigating willingness to compete typically do so in anonymous environments, real world competitions often have a more public nature, which introduces potential social image concerns. If...

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English / 01/06/2017

Hunting unicorns? Experimental evidence on predatory pricing policies

We study the anticompetitive effects of predatory pricing and the efficacy of three policy responses. In a series of experiments where an incumbent and a potential entrant interact, we compare prices, market structures and welfare. Under a laissez-faire regime, the threat of post-entry price cuts discourages entry, and allows incumbents to charge monopoly prices. Current U.S. policy...

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English / 01/06/2017

Multiple testing of one-sided hypotheses: combining Bonferroni and the bootstrap

In many multiple testing problems, the individual null hypotheses (i) concern univariate parameters and (ii) are one-sided. In such problems, power gains can be obtained for bootstrap multiple testing procedures in scenarios where some of the parameters are 'deep in the null' by making certain adjustments to the null distribution under which to resample. In this paper, we...

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English / 01/06/2017

Mortality inequality in Canada and the U.S.: divergent or convergent trends?

Mortality is a crucial dimension of wellbeing and inequality in a population, and mortality trends have been at the core of public debates in many Western countries. In this paper, we provide the first analysis of mortality inequality in Canada and compare its development to trends in the U.S. We find strong reductions in mortality rates across both genders and at all ages, with the...

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English / 01/06/2017

Correlation between white matter microstructure and executive functions suggests early developmental influence on long fibre tracts in preterm born adolescents

Main objectives: Executive functions are frequently a weakness in children born preterm. We examined associations of executive functions and general cognitive abilities with brain structure in preterm born adolescents who were born with appropriate weight for gestational age and who have no radiological signs of preterm brain injury on neuroimaging.
Methods: The Stockholm...

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English / 01/06/2017

Targeted undersmoothing

This paper proposes a post-model selection inference procedure, called targeted undersmoothing, designed to construct uniformly valid confidence sets for a broad class of functionals of sparse high-dimensional statistical models. These include dense functionals, which may potentially depend on all elements of an unknown high-dimensional parameter. The proposed confidence sets are...

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English / 01/06/2017

What drives the substitutability between native and foreign workers?: evidence about the role of language

This paper investigates the role of language in determining the degree of substitutability between foreign and native workers. To this end, we focus on Switzerland, an immigration-receiving country with four official languages spoken, three of which in common with bordering countries. We modify the model proposed by Ottaviano and Peri (2012) to account for the linguistic...

Institution partenaire

Università  della Svizzera italiana

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English / 26/05/2017

Exchange rate fluctuations and border crossings: evidence from the Swiss-Italian border

This paper provides an empirical analysis of the effects of nominal exchange rate fluctuations on cross-border mobility and on retailer firms' sales. Exchange rate shocks may affect the labour supply decisions of cross-border workers and the propensity for consumers to shop across the border. By using hourly data on traffic flows in Ticino, the southernmost canton of Switzerland...

Institution partenaire

Università  della Svizzera italiana

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English / 09/05/2017

Diffusion of behavior in dynamic networks

We analyze binary choice models in communication networks, in which both, the formation of links in the network as well as the action choices are endogenous. We provide a complete characterization of the equilibrium action choices and networks, where agents choose their strategies – actions and links – according to a perturbed best response update rule. We show that a...

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English / 01/05/2017

An experimental test of the Anscombe-Aumann Monotonicity axiom

Most models of ambiguity aversion satisfy Anscombe-Aumann’s Monotonicity axiom. Monotonicity imposes separability of preferences across events that occur with unknown probability. We construct a test of Monotonicity by modifying the Allais paradox to a setting with both subjective and objective uncertainty. Two experimental studies are conducted: while study 1 uses U.S. online...

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English / 01/05/2017

Testing-Based Forward Model Selection

This paper defines and studies a variable selection procedure called Testing-Based Forward Model Selection. The procedure inductively selects covariates which increase predictive accuracy into a working statistical regression model until a stopping criterion is met. The stopping criteria and selection criteria are defined using statistical hypothesis tests. The paper explicitly...

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English / 01/05/2017

Sharp convergence rates for forward regression in high-dimensional sparse linear models

Forward regression is a statistical model selection and estimation procedure which inductively selects covariates that add predictive power into a working statistical regression model. Once a model is selected, unknown regression parameters are estimated by least squares. This paper analyzes forward regression in high-dimensional sparse linear models. Probabilistic bounds for...

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English / 01/05/2017

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