hierarchical approach to term suggestion device
Our demonstration shows the hierarchy system working on a locally run search engine. Hierarchies are dynamically generated from the retrieved documents, and visualised on the menus. When a user selects a term from the hierarchy, the documents linked to the term are listed, and the term is then added to the initial query to rerun a search. Through the demonstration we illustrate how hierarchical presentation of expansion terms is achieved, and how our approach supports users to articulate their information needs using the hierarchy.
interactive query expansion concept hierarchies