Tracking Latent Domain Knowledge - Mapping Scientific Frontiers: The Quest for Knowledge Visualization - page 233

Fig. 7.5 Mainstream domain knowledge is typically high in both relevance and citation, whereas
latent domain knowledge can be characterized as high relevance and low citation
Fig. 7.6 The strategy of visualizing latent domain knowledge. The global context is derived from
co-citation networks of highly cited works. An “exit” landmark is chosen from the global context
to serve as the seeding article in the process of domain expansion. The expanded domain consists
of articles connecting to the seeding article by citation chains of no more than two citation links.
Latent domain knowledge is represented through a citation network of these articles
sub-processes. The purpose of the first process is to establish a global context
by subsequent analysis and visualization. Indeed, in this process we apply our
four-step procedure to the mainstream domain knowledge and generate a citation
landscape. The second process is domain expansion, which means that we expand