In addition to deep and broad knowledge, individuals and organizations sometimes seek to discover novel knowledge—knowledge that is surprising and unknown to them yet interesting and relevant. The challenge with discovering novel knowledge on the Web is that the question posed in the search is usually very vague, therefore creating appropriate search terms may be virtually impossible. Essentially, it’s like searching for “what you don’t know you don’t know”! In addition, novel knowledge may be difficult to locate amongst the vast amount of content returned;