Given a scalar random variable Y and a random vector X defined on the same probability space, the conditional distribution of Y given X can be represented by either the conditional distribution function or the conditional quantile function. To these equivalent representations correspond two...

There is no doubt the Data Envelopment Analysis (DEA) is a powerful method for the efficiency evaluation of Decision Making Units (DMUs) with multiple inputs and outputs. Despite its usefulness, DEA has some notable limitations. A significant drawback with this approach is that inability to...

This paper provides empirical evidence on the relationship between indicators of competitive pressure and innovation incentives using panel data of Spanish manufacturing firms for the period 1990-2006. Instead of using standard indicators of competition, such as market concentration measures or...