Trent Apted Judy Kay Andrew Lum James Uther Visualisation of Ontological Inferences for User Control of Personal Web Agents. 306-313 2003 conf/iv/2003 IV http://csdl.computer.org/comp/proceedings/iv/2003/1988/00/19880306abs.htm db/conf/iv/iv2003.html#AptedKLU03