Information retrieval technology has been central to the success of the web. The goal of information retrieval is to provide users with those documents that will satisfy their information need. With the large volume of data available in the web, retrieving relevant information becomes a difficult task. The Semantic Web area has seen rapid development nowadays. Semantic Web also offers a powerful practical approach to gain over multitude of information and services. It requires new data representations that improve our ability to capture and share knowledge. This book explores the perspective of information retrieval in semantic web which is a powerful way to access, use and share information.