Few researches have been carried out to provide means of requirements acquisition and assessment in the novel field of data warehousing. This work proposes a methodology for requirements specification in the context of data warehouse systems, as a way to accomplish the peculiar aspects inherent to such systems. Moreover, a case study and its practical contributions in modeling a strategic infor...

Polarimetric Doppler radars provide valuable information about the kinematic and microphysical structure of storms. However, in-depth analysis using radar products, such as Doppler-derived wind vectors and hydrometeor identification, has been difficult to achieve in (near) real time, mainly because of the large volumes of data generated by these radars, lack of quick access to these data, and t...

Inevitable simplifications of models of real world activities lead to some inadequacies. In the DEA literature several methods were proposed to overcome such difficulties. Some authors proposed to use specific production units in the primal space of inputs and outputs as a starting point in order to improve the frontier of the DEA models. In our previous papers, we introduced the notion of term...

The integration of computer technology into science and daily life has enabled the collection of massive volumes of data, such as high-throughput biological assay data, climate data, website transaction logs, and credit card records. However, such big data sets cannot be practically analyzed on a single commodity computer because their sizes are too large to fit in memory or it is too time cons...

1 Institute of Bioinformatics and Systems Biology, Helmholtz Zentrum München, German Research Center for Environmental Health, Ingolstädter Landstraße 1, 85764 Neuherberg, Germany 2Chair of Genome Oriented Bioinformatics, Life and Food Science Center of Weihenstephan, Technische Universität München, Maximus-von-Imhof-Forum 3, 85354 Freising-Weihenstephan, Germany 3Department of Biology, Ludwig-...

A simulation project for Information and Communication Technology (ICT) system design and Business Process (BP) design in an organisation usually starts with an unstructured problem situation. We have already outlined a simulation meta-methodology addressing the situation. Now, we give a detailed description of the proposed simulation meta-methodology dealing with both the hard and the soft asp...

Various response measures and statistical methods appropriate for the analysis of data collected in the SENCAR mouse skin assay are examined. The characteristics of the tumor response data do not readily lend themselves to the classical methods for hypothesis testing. The advantages and limitations of conventional methods of analysis and methods recommended in the literature are discussed. Seve...

This paper describes a methodology for the capture, analysis and synthesis of hybrid data. A case study in the field of reasoning with multiple representations and specifically in computer programming is presented to exemplify the use of such methodology. The hybrid data considered comprise computer interaction logs, audio recordings and data about visual attention focus. The capture of the foc...