Scenario 1: build an ebook search engine

The target is, where there are a lot of information on ebook. We shall extract book's information, such as titles, where to download, comments on them etc, all of which are stored in semantics in XML files. Thereafter many information retrieval system can be built up against the results. As an example, we shall provide a ebook search engine via which users can find where a specific book can be downloaded. After reading this chapter, you can find building a vertical search engine like this is very straight-forward.