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  • Am Institute for Web Science & Technologies - WeST ist im Rahmen der Graduiertenausbildung ein Promotionsstipendium im Themenbereich „Methoden und Anwendungen von Eye-Tracking“ zu vergeben. Die Laufzeit des Stipendiums beträgt zwei Jahre mit der Möglichkeit der Verlängerung um ein Jahr.

  • The Semantic Web aims at converting the current web into a web of data. All data in the Semantic Web - be it Linked Data or publicly available Triplestores - adhere to the same data model. They are also both queryable through an either Link-Traversal based query approach or through SPARQL.

  • There is an increasing availability of data encoded in the W3C standard Resource Description framework (RDF). In a near future, this may pose severe problem to classical approaches for query answering based on a single computing node. A natural approach to tackle this challenge is to resort to distributed RDF stores that combine several computing nodes in one virtual system. In general, distributed RDF stores splits an RDF graph into several partitions that are assigned to computing nodes. Hence, the partitioning strategy influences the efficiency of query execution.

  • Just to begin with I would start to highlight what was possibly going wrong. I am not sure whether it is meant just to analyse the project itself or the whole process of decision making including the decision whether to buy commercial of the shelf or to develop an individual software and further the outsource decision.

  • Summary of the three month internship at Hoffmann-La Roche.


  • The way in which companies benefit from open source software (OSS) communities varies and corresponds with the business strategy they maintain. One way of establishing influence in OSS communities is by deploying own resources to an OSS project. Assigning own paid developers to work for an OSS project, like the Linux kernel project, is a suitable means to influence project work. On the other hand, the pertinent literature on user communities and governance in OSS maintains that a large proportion of influence individuals have in a community depends on their position in the community.

  • The availability of huge amount of graph-like data poses several data management challenges related to the representation, storage and querying of such data. On one hand, we have standards such as the Resource Description Framework and database solutions optimised for graph-like data. On the other hand, we have graph languages offering different trade-offs between expressiveness and complexity of query evaluation. However, even languages with a polynomial evaluation bound may result prohibitive in practice.

  • Eye tracking data is used to control a butterfly in the game Schau genau! The player collects flowers and classifies photographies of flowers for gathering points. We show in our work that besides the entertaining aspects of the game, the user acquires knowledge on plant species and generates information on the classified photos.


  • The Semantic Web is intended as a web of machine readable data where every data source can be the data provider for different kinds of applica- tions. However, due to a lack of support it is still cumbersome to work with RDF data in modern, object-oriented programming languages, in particular if the data source is only available through a SPARQL endpoint without further documen- tation or published schema information.

  • With the growth of the LOD cloud in the last years, the number of interlinks (i.e. links between resources of different data sets) has also increased considerably. For example, DBpedia currently has a total of 39 million inlinks. In this talk, I will describe ongoing work on the analysis of existing interlinks on the LOD cloud. First, I will make a summary of statistics that other researchers have published. Second, I will report on our findings and future directions.


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