To be faced with a document collection and not to be able to find the information you know exists somewhere within it is a problem as old as the existence of document collections. Information Architecture is the discipline dealing with the modern version of this problem: how to organize web sites so that users actually can find what they are looking for. Information architects have so far applied known and well-tried tools from library science to solve this problem, and now topic maps are sailing up as another potential tool for information architects.
Information architects are fascinated with faceted classification and its application to information architecture problems. However, facets remain difficult to understand and there are few options for learning about them. This is the first in a series of articles that aims to correct this situation. We intend to explain both facets and the more general concept of controlled vocabularies. We want to make the subject accessible to those who don’t have advanced degrees in library and information science. Furthermore, we want to show how these concepts can be applied to solve information architecture problems for the web and other digital information environments.