<pre>Author/s : Jack Park et al Publisher : Addison-Wesley Category :XML Review by : Valentin Crettaz Rating : 9 horseshoes</pre> With the ever-increasing popularity of the Internet, it becomes more and more difficult to cope with the huge amount of information that is produced every day anywhere in the world. The information produced is often semantically poor and comprehensible only by people. This prevents software applications and the like from making use of such information via the web. This is the first book on the XML topic maps (XTM) technology, written by the most famous leaders of the topic maps community (www.topicmaps.org), aims at presenting topic mapping with XML as a novel technology providing support for organizing and representing knowledge. Each of the seventeen chapters of the book presents a different aspect of the XTM technology. The authors first introduce the topic map paradigm (topic, association, occurrence) and further discuss various subjects, including representation and visualization of topic maps, open source and commercial tools that provide support for creating, maintaining and merging topic maps, comparison between topic maps and semantic networks, and using topic maps for knowledge organization and ontological engineering. This book provides an interesting discussion on how to build rich content web sites with XML topic maps and XSLT style sheets. It also demonstrates how topic maps can be integrated with RDF in order to make the XTM technology become a key player in Tim Berners-Lee's Semantic Web initiative. This book is targeted at people and organizations that need strong technology support for quick and durable organization of private or corporate information systems.