The validity of data envelopment analysis (DEA) efficiency estimators depends on the robustness of the production frontier to measurement errors, specification errors and the dimension of the input-output space. It has been proven that DEA estimators, within the interval (0, 1], are...

This paper presents an approach to mapping a process model onto a Bayesian network resulting in a Bayesian Process Network, which will be applied to process risk analysis. Exemplified by the model of Event-driven Process Chains, it is demonstrated how a process model can be mapped onto an...

We propose a new model for transaction data that accounts jointly for the time duration between transactions and for the discreteness of the intraday stock price changes. Duration is assumed to follow a stochastic conditional duration model, while price discreteness is captured by an...

In small samples and especially in the case of small true default probabilities, standard approaches to credit default probability estimation have certain drawbacks. Most importantly, standard estimators tend to underestimate the true default probability which is of course an undesirable...

In small samples and especially in the case of small true default probabilities, standard approaches to credit default probability estimation have certain drawbacks. Most importantly, standard estimators tend to underestimate the true default probability which is of course an undesirable...

We propose Bayesian inference in hazard regression models where the baseline hazard is unknown, covariate effects are possibly age-varying (non-proportional), and there is multiplicative frailty with arbitrary distribution. Our framework incorporates a wide variety of order restrictions on...

The aim of this paper is to model the length of registration at university and its associated academic outcome for undergraduate students at the Pontificia Universidad Cat´olica de Chile. Survival time is defined as the time until the end of the enrollment period, which can relate to different...

Our research argued the adequacy of sustainability performance in supply chain management (i.e., evaluation and coordinated effort). Based on survey result from 96 Vietnam producers, the paper determines the effect that the two practices have on the producer company’s and the provider’s...

This study delves into the intricate world of risk management at YPF S.A., Argentina's premier energy company, spanning the period from 2007 to 2019. We begin by examining the dynamic landscape of the Argentine oil market and YPF's pivotal role within it. Subsequently, we dissect YPF's initial...

The contemporary media narratives frequently exhibit significant contradictions due to the influence of diverse interests. In this context, the framing of information assumes critical importance in shaping consumer opinions, necessitating a comprehensive examination of its management. This...