The Semantic Web aims at expressing web content in machine-processable forms, so that it is maintained efficiently by software agents. In this way, the precision of search will be enhanced and logic reasoning on web data will be possible. The Semantic Web vision, as expressed by its main founder Tim Berners-Lee, is “giving information a well-defined meaning, better enabling computers and people to work in cooperation”.
In the following clip, Tim Berners-Lee explains the main concepts and technologies behind the Semantic Web: