Dr Ying-Hsang Liu gave a presentation to a group of researchers with special interests in information retrieval, data mining and document computing at CSIRO ICT Centre in Canberra on 23 November.
His presentation was concerned with the impact of state-of-the-art controlled vocabularies, exemplified by MeSH (Medical Subject Headings), on search effectiveness by different types of searchers in the genomics domain. The study suggested that MeSH terms were more useful for domain experts than for search experts in terms of the precision measure, even though domain experts did not perceive that MeSH terms were useful.
He also met several researchers at CSIRO whose current research projects range from distributed IR (also known as federated searching in information studies), enterprise search, patent classification, tweets as annotations to intelligent search tools for answering clinical questions. The knowledge sharing in this discussion group has stimulated many exciting ideas for future collaborative research.