The Simple Knowledge Organisation System (SKOS) is a vocabulary intended for the representation of Knowledge Organisation Systems (KOS) such as thesauri, term lists and controlled vocabularies. The SKOS data model is defined using an RDF schema so that it fits in with existing Semantic Web technologies. We speculate how SKOS artefacts may be used in combination with other knowledge artefacts, s...

We propose that OWL 1.1 incorporate the use of Javascript. By choosing to make use of Javascript within OWL, adoption and utility of OWL might be improved in two different ways. First, it could be used in a facility that lets users specify Javascript code to translate domain specific languages into OWL. Second, Javascript is well known to a large number of web developers. By enabling OWL docume...

ELK is a specialized reasoner for the lightweight ontology language OWL EL. The practical utility of ELK is in its combination of high performance and comprehensive support for language features. At its core, ELK employs a consequence-based reasoning engine that can take advantage of multi-core and multi-processor systems. A modular architecture allows ELK to be used as a stand-alone applicatio...

State and federal actions to conserve northern spotted owl (Strix occidentalis caurina) habitat are largely initiated by establishing habitat occupancy. Northern spotted owl occupancy is typically assessed by eliciting their response to simulated conspecific vocalizations. However, proximity of barred owls (Strix varia)-a significant threat to northern spotted owls-can suppress northern spotted...

This paper reports on the implementation of a rule system, called ODEVICE, for reasoning about OWL instances using deductive rules. O-DEVICE exploits the rule language of the CLIPS production rule system and transforms OWL ontologies into an object-oriented schema of COOL. During the transformation procedure, OWL classes are mapped to COOL classes, OWL properties to class slots and OWL instance...

A description logics representation of the Foundational Model of Anatomy (FMA) in the Web Ontology Language (OWL-DL) would allow developers to combine it with other OWL ontologies, and would provide the benefit of being able to access generic reasoning tools. However, the FMA is currently represented in a frame language. The differences between description logics and frames are not only syntact...

Knowledge representation and reasoning on the Semantic Web is done by means of ontologies. While the quest for suitable ontology languages is still ongoing, OWL [5] has been established as a core standard. It comes in three flavours, as OWL Full, OWL DL and OWL Lite, where OWL Full contains OWL DL, which in turn contains OWL Lite. The latter two coincide semantically with certain description lo...

(Speotyto cuniculuria) to a moving object when the object did and did not cast a conspicuous shadow. We used a single Burrowing Owl for all tests. It was trapped about 5 km north of Davis, Yolo County, California. We chose this species because it is easily trapped and because it often feeds nocturnally upon terrestrial prey, including rodents, and therefore may exploit shadow cues (Thomsen, Con...

The Open Biomedical Ontology (OBO) format emerged from the Gene Ontology, and now supports many other important ontologies. If we compare OBO to OWL, the ontology language of the Semantic Web, the latter anticipates integral query languages, rule languages and distributed infrastructure for information interchange. A convenient method for leveraging these other features for OBO ontologies is by...