German Abstract Solle ein Unternehmen zu Rekrutierungszwecken oder Employer Branding über Themen des Human Resource Managements welche für die Zielgruppe von Interesse sind bloggen? Gehört ein Weblog in die Social Media Strategie des Unterneh-mens zur Personalrekrutierung? Mit Hilfe...

This paper deals with two alternatives to the so-called Hausman test for the exogeneity of instruments, in the context of a model where one or more explanatory variables are possibly correlated with the structural error. These two alternatives are at least as good or better than the Hausman test...

We have studied the relationship between Receiver Operating Characteristics (ROC) and Precision Recall Curve (PRC) both analytically and using a real-life empirical example of yield spread as a predictor of recessions. We show that false alarm rate in ROC and inverted precision in PRC are...

On many occasions we need to construct an index that represents a number of variables. Cost of living index, general price index, human development index, index of level of development, etc are some of the examples that are constructed by a weighted (linear) aggregation of a host of variables....

This paper evaluates, in the context of economic geography estimates, the magnitude of the distortions arising from the choice of zoning system, which is also known as the Modifiable Areal Unit Problem (MAUP). We consider three standard economic geography exercises (the analysis of spatial...

This study sheds new light on the question of whether or not sentiment surveys, and the expectations derived from them, are relevant to forecasting economic growth and stock returns, and whether they contain information that is orthogonal to macroeconomic and financial data. I examine 16...

We consider the Bovespa economic index (Ibovespa) from January 1994 to the present. Starting directly from this high resolution data we study the statistical properties of the time evolution of the Ibovespa. In order to obtain price dynamics information we find the probability density function...

Although the histogram is the most widely used density estimator, it is well--known that the appearance of a constructed histogram for a given bin width can change markedly for different choices of anchor position. In this paper we construct a stability index $G$ that assesses the potential...

Statistical computing when input/output is driven by a Graphical User Interface is considered. A proposal is made for automatic control of computational flow to ensure that only strictly required computations are actually carried on. The computational flow is modeled by a directed graph for...

El objetivo de este trabajo fue el de derivar un índice de privación material que, a la vez que resumiese las condiciones socioeconómicas de los municipios de la Región Sanitaria Girona, permitiese explicar la variabilidad geográfica de la incidencia del cáncer en la Región. Utilizando...