Semantic Web data is currently being heavily used as a data representation format in scientific communities, social networks, business companies, news portals and other domains. The irruption and availability of Semantic Web data is demanding new methods and tools to efficiently analyze such data and take advantage of the underlying semantics. Although there exist some applications that make us...

Collaborative networked organizations are composed of heterogeneous and autonomous entities. Thus it is natural that each member has its own set of values and preferences, as a result, conflicts among partners might emerge due to some values misalignment. Therefore, tools to support the analysis of Value Systems in a collaborative context are relevant to improve the network management. Since a ...

Cognitive scientists have often pondered the question of perceptual spaces, that is, the question of how a certain gamut of familiar stimuli might be organized in the mind. We present Trajectory Mapping as an alternative clustering method to the traditional algorithm of Multi-Dimensional Scaling. We suggest that given data about the relationships among stimuli, Multi-Dimensional Scaling provide...

Our theoretical understanding of the properties of genetic algorithms (GAs) being used for function optimization (GAFOs) is not as strong as we would like. Traditional schema analysis provides some first order insights, but doesn’t capture the non-linear dynamics of the GA search process very well. Markov chain theory has been used primarily for steady state analysis of GAs. In this paper we ex...

Preface These course notes cover a lecture on algorithm engineering for the basic toolbox that Peter Sanders is reading at Universität Karlsruhe since 2004. The text is compiled from slides, scientific papers and other manuscripts. Most of this material is in English so that this language was adopted as the main language. However, some parts are in German. The primal sources of our material are...

The importance of “paired comparisons,” whether ordinal or cardinal, has motivated the creation of several methodological approaches; missing, however, is a common way to compare the various techniques. To do so, an approach developed here creates a coordinate system for the “data space.” The coordinates capture which data aspects satisfy a strong cardinal transitivity condition and which ones ...

Physicochemical properties of proteins/peptides are often used to separate proteins/peptides from complex biological samples in proteomics research, which is necessary for the further proteins/peptides identification. So, the analyses of these properties are very important for the design of proteomic experiments and the further analyses of identified results. Current available web-based tools a...

To the Editors: Johnstone et al. recently reported that COMT genotype modified the effectiveness of a transdermal nicotine patch for smoking abstinence in a randomized clinical trial conducted in the 1990s (1, 2). Several previous publications have described outcomes of this trial in relation to other genotypes (DRD2, DBH, 5-HTTLPR, DRD4 , and OPRM1 ; refs. 3-7). All but one reported positive f...

Large C and C++ softwa¡e projects typically share common types, macros, and variables among modules via include files organized into hierarchies. Many of these hierarchies grow so complex that it is haed for programmers to figure out when a file must be included. Since including unused symbols is usually harmless, application code tends to include more files than required. Knowing when ñles are...