by Holger Knublauch | Jul 8, 2013 | The Semantic Ecosystems Journal
TopBraid 4.3 introduces a small Event-Condition-Action (ECA) rule engine that can be used to trigger rules whenever a change was performed on an EVN vocabulary or ontology. Example use cases of this feature include anything that needs to happen as a side effect of...
by Holger Knublauch | Jul 1, 2013 | The Semantic Ecosystems Journal
TopBraid Live (TBL) is TopQuadrant’s server platform for semantic data processing and editing. In addition to being the foundation of various out-of-the-box solution packages such as EVN, TopBraid Live can also be used “stand-alone”. The features of...
by Holger Knublauch | Jun 19, 2013 | The Semantic Ecosystems Journal
When we started implementing the EPIM ReportingHub project, we had to come up with a mechanism that allows us and others to represent tabular reporting data derived from an RDF triple store. For example, there needed to be a table that lists drilling fluid information...
by Holger Knublauch | Jun 18, 2013 | The Semantic Ecosystems Journal
One of the best kept secrets about SPIN is its ability to define new SPARQL functions that encapsulate complex sub-queries into reusable building blocks. Normal SPIN functions are limited to whatever can be expressed in SPARQL, by means of a nested spin:body query....
by Holger Knublauch | Jun 13, 2013 | The Semantic Ecosystems Journal
Several RDF/OWL ontologies use blank node structures to represent complex objects. For example, OWL uses blank nodes to represent class expression trees consisting of intersections, unions and restrictions. Other ontologies use “reified” objects that...
