Mining the treasures of Trove: new approaches and new tools

Recently the National Library of Australia added the 50 millionth article to its Trove newspapers database. This is an astonishing resource to anyone interested in Australia history and culture. But how do we use it? Historians armed with traditional methods of search and browse now have to 'grapple with abundance', but in doing so, new questions start to arise. How might we track not a person or an event, but an idea? This paper will introduce the possibilities of text-mining and report on some of my experiments in applying these to Trove.