Abstract PGF (Portable Grammar Format) is a low-level language used as a target of compiling grammars written in GF (Grammatical Framework). Low-level and simple, PGF is easy to re...
Visual representations are widely used to describe modern-day software systems, but, in most cases, they lack rigour. This paper addresses the problems of formality, rigour and co...
Ontologies and datasets for the Semantic Web are encoded in OWL formalisms that are not easily comprehended by people. To make ontologies accessible to human domain experts, sever...
Most of work on partial information in databases asks which operations of standard languages, like relational algebra, can still be performed correctly in the presence of nulls. In...
Language is primarily a physical, and more particularly a biological phenomenon. To say that it is primarily so is to say that that is how, in the first instance, it presents itse...