Kolloquium

Parameter estimation and diagnostic tests for INMA(1) processes

On Some Stochastic Optimal Control Problems for an Energy Storage Facility We address the valuation of an energy storage facility in the presence of stochastic energy prices as it arises in the case of a hydro-electric pump station. The valuation problem is related to the problem of determining the optimal charging/discharging strategy that maximizes the […]

Tests on Asymmetry for Ordered Categorical Variables Skewness is a well-established statistical concept for continuous and to a lesser extent for discrete quantitative statistical variables. However, for ordered categorical variables almost no literature concerning skewness exists, although this type of variables is common for behavioral, educational, and social sciences. Suitable measures of skewness for ordered […]

Performance of risk-adjusted CUSUM chart under an incorrectly specified binary logistic regression model Quality control charts used in a healthcare environment, for example, to monitor surgical performance are becoming more common. Risk-adjusted (RA) CUSUM charts, that utilize only raw risk scores like the Parsonnet score to assess the preoperative risk, may lead to a deterioration […]