The Extended Semantic Web Conference (ESWC) is one of the major conferences in the field of Semantic Web technologies and related topics. Prof. Dr. Steffen Staab is a keynote speaker at the ESWC, and researchers from his Institute for Web Science and Technologies are presenting several papers.
In his keynote, Steffen Staab states that by now research did not succeed in developing the right programming paradigms to deal with the proper nature of Semantic Web data. Thus, Professor Staab outlines empirical investigations of Semantic Web data and recent developments towards Semantic Web programming that try to reduce the mismatch between data engineering and programming approaches.
One publication of WeST’s research team addresses the “Perplexity of Index Models over Evolving Linked Data”. In their paper, Thomas Gottron and Christian Gottron analyse and compare the accuracy and stability of twelve different index models over dynamic data on the Linked Data cloud. One interesting observation is the relative stability of schema-level indices.
The second contribution is a “Survey on Common Strategies of Vocabulary Reuse in Linked Open Data Modeling“. Johann Schaible, Thomas Gottron and Ansgar Scherp investigated under which aspects Linked Data experts model their data and how they chose the semantic vocabularies to describe the data. The results give insights how the appropriateness, popularity and the structure of the data influence this choice.
Furthermore, Thomas Gottron, Ansgar Scherp and Stefan Scheglmann have contributed a paper on “Providing Alternative Declarative Descriptions for Entity Sets using Parallel Concept Lattices“. The motivation for this work was to aid and support users in describing data objects they are interested in, e.g. by the means of a formal query or when using systems for facetted browsing. The method presented in the paper provides aid by proposing new viewpoints on the data and giving alternative, concise descriptions. The approach is described in a formal and theoretic framework and evaluated in a concrete setting of searching for Linked Data.
Finally, Andreas Kasten, Ansgar Scherp, and Peter Schauß (researchers that are not from, but related to the WeST institute) present their research paper “A Framework for Iterative Signing of Graph Data on the Web“. The framework defines a pipeline for signing RDF graphs and OWL graphs and can be configured with different algorithms. It also supports iterative signing of multiple graphs at once. Four example configurations of the framework are extracted from the related work and discussed in the paper.