Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Mediocre at best

Lots on XML, little on the Semantic Web. Not clear what audience the book is geared towards.For managers the book is too heavy on the technical details of XML and XML Schema. For developers and architects who would actually want to implement a semantic application there is too little substance on ontologies, semantic web, semantic web services or OWL to be of any use.Many chapters (and the book in general) are poorly organized. For a much better (and more practical) explanation of the key concepts check out the recently released "Explorer's Guide to the Semantic Web".