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In this paper, a novel framework for description of rich media content is introduced. Firstly, the concept of 'content objects' is provided. Content objects are rich media presentations, enclosing different types of media, along with real-world information and user-related information. These highly complex presentations require a suitable description scheme(More)
Hereby I declare this thesis to be the work of my own, written independently. All sources and references are correctly cited with complete references to their sources. Dedication Dedicated to my wife Laura whose support and patience made this project possible, to my first, still unborn child that kicks its legs in joy when I sing for it, and finally to my(More)
Hyperlinks and forms let humans navigate with ease through websites they have never seen before. In contrast, automated agents can only perform preprogrammed actions on Web services, reducing their generality and restricting their usefulness to a specialized domain. Many of the employed services call themselves RESTful, although they neglect the hypermedia(More)
The early visions for the Semantic Web, from the famous 2001 Scientific American article by Berners-Lee et al., feature intelligent agents that can autonomously perform tasks like discovering information, scheduling events, finding execution plans for complex operations, and in general, use reasoning techniques to come up with sense-making and traceable(More)
Unstructured metadata fields such as 'description' offer tremendous value for users to understand cultural heritage objects. However, this type of narrative information is of little direct use within a machine-readable context due to its unstructured nature. This paper explores the possibilities and limitations of Named-Entity Recognition (NER) and Term(More)
Many have left their footprints on the field of semantic RESTful Web service description. Albeit some of the propositions are even W3C Recommendations, none of the proposed standards could gain significant adoption with Web service providers. Some approaches were supposedly too complex and verbose, others were considered not RESTful, and some failed to(More)
SemWebVid 1 is an online Ajax application that allows for the automatic generation of Resource Description Framework (RDF) video descriptions. These descriptions are based on two pillars: first, on a combination of user-generated metadata such as title, summary, and tags; and second, on closed captions which can be user-generated, or be auto-generated via(More)
In this position paper, we first discuss how modern search engines, such as Google, make use of Linked Data spread in Web pages for displaying Rich Snippets. We present an example of the technology and we analyze its current uptake. We then sketch some ideas on how Rich Snippets could be extended in the future, in particular for multimedia documents. We(More)
We have developed an application called Wikipedia Live Monitor that monitors article edits on different language versions of Wikipedia--as they happen in realtime. Wikipedia articles in different languages are highly interlinked. For example, the English article "en:2013_Russian_meteor_event" on the topic of the February 15 meteoroid that exploded over the(More)
Web apis are becoming an increasingly popular alternative to the more heavyweight Web services. Recently, they also have been used in the context of sensor networks. However, making different Web apis (and thus sensors) cooperate often requires a significant amount of manual configuration. Ideally, we want Web apis to behave like Linked Data, where data(More)