Sam Coppens

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To unlock the full potential of Linked Data sources, we need flexible ways to query them. Public sparql endpoints aim to fulfill that need, but their availability is notoriously problematic. We therefore introduce Linked Data Fragments, a publishing method that allows efficient offloading of query execution from servers to clients through a lightweight(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)
Read/Write infrastructures are often predicted to be the next big challenge for Linked Data. In the domains of Open Data and cultural heritage, this is already an urgent need. They require the exchange of partial graphs, personalised views on data and a need for trust. A strong versioning model supported by provenance is therefore crucial. However, current(More)
We will show that semantically annotated paths lead to discovering meaningful, non-trivial relations and connections between multiple resources in large online datasets such as the Web of Data. Graph algorithms have always been key in pathfinding applications (e.g., navigation systems). They make optimal use of available computation resources to find paths(More)
As interest in provenance grows among the Semantic Web community, it is recognized as a useful tool across many domains. However , existing automatic provenance collection techniques are not universally applicable. Most existing methods either rely on (low-level) observed provenance, or require that the user discloses formal workflows. In this paper, we(More)
This paper describes how to model uncertain provenance and provenance of uncertain things in a flexible and unintrusive manner using PROV, W3C's new standard for provenance. Three new attributes with clearly defined values and semantics are proposed. Modeling this information is an important step towards the modeling and derivation of trust from resources(More)
Nowadays, most people have limited leisure time and the offer of (cultural) activities to spend this time is enormous. Consequently, picking the most appropriate events becomes increasingly difficult for end-users. This complexity of choice reinforces the necessity of filtering systems that assist users in finding and selecting relevant events. Whereas(More)
Data provenance is defined as information about entities, activities and people producing or modifying a piece of data. On the Web, the interchange of standardized provenance of (linked) data is an essential step towards establishing trust [2]. One mechanism to track (part of) the provenance of data, is through the use of version control systems (VCS), such(More)
Today, people have a lot of spare time at their hands which they want to fill in according to their interests, whereas cultural temples are trying to attract interested communities to their carefully planned cultural programs. These cultural activities can be characterised as dynamic and distributed events in addition to which it is important to aggregate,(More)
In Belgium, we developed a digital long-term preservation archive to preserve the information from our heritage institutions. This platform harvests the information from the institutions , preserves the information for the long term and disseminates the information as Linked Open Data. Our platform produces many different versions of the harvested data to(More)