The research work was conducted in three phases as shown in Table 1.2, where each
phase provided a set of results. The results, described as contributions of this work, have
been published in peer-reviewed international conferences and journals. In addition, an
international workshop on "Aspects in Evaluating Holistic Quality of Ontology-based
Information Retrieval" (ENQOIR) was organised in 2009 (see Appendix G).
The contributions of this work are summarised as follows: