A comparison of three controlled natural languages for OWL 1.1

Abstract. At OWLED2007 a task force was formed to work towards

Supporting domain experts to construct conceptual ontologies: A holistic approach

A recent trend in ontology engineering research aims at encouraging the active participation of domain experts in the ontology creation process. Ontology construction methodologies together with appropriate tools and technologies, such as controlled natural languages, semantic wikis, intelligent user interfaces and social computing, are being proposed to enable the direct input from domain experts and to minimize the dependency on knowledge engineers at every step of ontology development. The time is ripe for consolidating methodological and technological advancements to create intuitive ontology engineering tools which can make Semantic Web technologies usable by a wide variety of people without formal knowledge engineering skills. A novel, holistic approach to facilitate the involvements of domain experts in the ontology authoring process is presented here. It integrates (i) an ontology construction methodology, (ii) the use of a controlled natural language, and (iii) appropriate tool support. The integrated approach is illustrated with the design, implementation and evaluation of ROO - a unique ontology authoring tool which combines intelligent techniques to assist domain experts in constructing ontologies. The bene ts and limitations of the proposed approach are analyzed based on user studies with ROO. A broader discussion is provided pointing at issues to be taken into account when assisting the involvement of domain experts in ontology construction

Colorectal cancer incidence, mortality and survival in South-east England between 1972 and 2001.

We report incidence, mortality and survival from colorectal cancer in South-east England using data from 162,022 incident cases and 97,697 deaths collected between 1972 and 2001 at the Thames Cancer Registry, which currently covers 14 million people. Overall, there was an increase in the incidence of colorectal cancer among men aged 50 years and over, and a decrease among the youngest age groups. In women, there was a clear decrease in incidence among those aged less than 60 years but a slight increase among those aged 60-79 years. Furthermore, there has been a steady decrease in mortality for all ages, larger in women than in men, and an increase in the 10-year relative survival for both sexes from just over 30% among those followed-up during 1981-1986 to just over 45% among those followed-up during 1997-2001