An RDF Model for Events
Why do we need an event model? Many RDF streaming systems discussed have little or no model for the real-time data they ingest. These systems make the lowest common assumptions about the structure of …
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RDF Access Control
There are several approaches to modelling access control using RDF. The approaches use RDF as a modelling language for permissions linking users with user’s rights on the one hand and on the …
Read moreImmutability and Event Derivation in RDF
“In many event processing systems […] events are immutable” 1. This stems from the definition of what an event is: “An event is an occurrence within a particular system or …
Read moreStream Punctuation and RDF Stream Processing
Definition by Tucker et al. 1 and Maier et al. 2: ‘‘A punctuation is a pattern p inserted into the data stream with the meaning that no data item i matching p will occur further on in the …
Read moreHighlights from Research Project PLAY
My research project PLAY has had its final review meeting on Tuesday, November 26th, 2013. Notable highlights from the project are: Use of open Web Standards for event modelling, pattern modelling, …
Read moreTutorial on Complex Event Processing
I gave a tutorial about Complex Event Processing and more specifically the PLAY semantic event format and query language at the Winter School on Knowledge Technologies for Complex Business …
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