Zobrazeno 1 - 10
of 29
pro vyhledávání: '"Vera Hofer"'
Publikováno v:
Advanced Theory and Simulations. 4:2100092
Publikováno v:
Quality and Reliability Engineering International. 33:2673-2683
Design and production of semiconductor devices for the automotive industry are characterized by high reliability requirements, such that the proper functioning of these devices is ensured over the whole specified lifetime. Therefore, manufacturers le
Autor:
Vera Hofer, Johannes Leitner
Publikováno v:
Journal of Economic Dynamics and Control. 76:66-85
Live soccer betting markets differ from other binary options markets in that all fundamental information is observable, the options mature in less than two hours and the markets are highly liquid. This study presents a new method for the identificati
Autor:
Vera Hofer, Holger Bach
Publikováno v:
Expert Systems with Applications. 42:8557-8572
An innovative statistical monitoring system for railway ballast is introduced.It bridges the gap between the traditional biannual material inspections.It allows for closer test intervals ensuring better detection of fluctuations in ballast quality.It
Autor:
Vera Hofer
Publikováno v:
European Journal of Operational Research. 243:177-189
For evolving populations the training data and the test data need not follow the same distribution. Thus, the performance of a prediction model will deteriorate over the course of time. This requires the re-estimation of the prediction model after so
Autor:
Vera Hofer, Thomas Nowak
Publikováno v:
European Journal of Operational Research. 234(3):701-708
As input ows of secondary raw materials show high volatility and tend to behave in a chaotic way, the identification of the main drivers of the dynamic behavior of returns plays a crucial role. Based on a stylized productionrecycling system consistin
Publikováno v:
Mathematical Geosciences. 45:727-752
The Los Angeles test is one of the few mechanical test methods that provides information on the quality of railway ballast. However, the Los Angeles value is subject to large variability. Since important economic decisions depend on this value, the r
Autor:
Georg Krempl, Vera Hofer
Publikováno v:
Computational Statistics & Data Analysis. 57:377-391
A novel statistical methodology for analysing population drift in classification is introduced. Drift denotes changes in the joint distribution of explanatory variables and class labels over time. It entails the deterioration of a classifier's perfor
Autor:
Johannes Leitner, Vera Hofer
Publikováno v:
Journal of Applied Statistics. 39:2599-2617
We present a bivariate regression model for count data that allows for positive as well as negative correlation of the response variables. The covariance structure is based on the Sarmanov distribution and consists of a product of generalised Poisson
A hierarchical tree layout algorithm with an application to corporate management in a change process
Autor:
Vera Hofer, Georg Krempl
Publikováno v:
Expert Systems with Applications. 39:12123-12130
This work presents a hierarchical tree layout algorithm based on iterative rearrangement of subtrees. Using a greedy heuristic, all subtrees of a common parent are rearranged into a forest such that gaps between them are minimized. This heuristic is