Using maps and landmarks for navigation between closed and open corpus hyperspace in web-based education

This paper focuses on the problem of building links from closed to open corpus Web pages in the context of Web-based education. As a possible solution it introduces landmark-based navigation using semantic information space maps - an approach that we are currently investigating. The technical part of the paper presents a system Knowledge Sea that implements this approach, describes the mechanism behind the system, and reports some results of a classroom evaluation of this system.