technology for multidimensional indexing and classification of content across various products and publications. A topic map comprised of numerous merged indexes and classifications is used for navigation and, most importantly, content repurposing and building new and customized publications. Aspen Publishers, an information provider for attorneys, business professionals and law students, has an unusual perspective—unlike most publishers its audience is equally receptive to both print and electronic products. Because Aspen publishes products across many subject lines, customers may want information contained in multiple products (e.g., tax issues are covered in such disparate areas as Pensions, Corporate Law and Insurance). As more of its titles move to XML, Aspen is looking to repurpose material in ways that make it more useful, more easily located or more readily navigated. Because of the cross-disciplinary nature of many subjects, Aspen’s first look at “chapter-chunking” custom publishing was unsatisfactory. Chapters and sections listed in a Table of Contents provided a base of topics that was too wide. It needed a way for customers to combine smaller components of multiple publications to fit their needs more precisely. Working with Cogitech, a topic map
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