This chapter briefly reviewed several types of information visualization techniques. Some efficiently represent the global structure of a topic map while others are better at displaying details or providing interaction with data. The ultimate topic map visualization tool should benefit from all these advantages by combining several techniques. This can be done by displaying several windows or by selecting the most appropriate representation for a given level of detail.
Information visualization is an important topic, given the high-dimensional nature of the data we must process on a continual basis. Visualization techniques are rich with opportunity to improve; topic maps provide a way to tap into that opportunity.