What is Semantic?
The Semantic Web is an evolving extension of the World Wide Web in which the semantics of information and services on the web is defined, making it possible for the web to understand and satisfy the requests of people and machines to use the Web content.
The Semantic Web is a vision of information that is understandable by computers, so that they can perform more of the tedious works involved in finding, sharing and combining information on the web.
For example of Semantic Web
A computer might be instructed to list the prices of flat screen HDTVs larger than 40 inches with 1080p resolution at shops in the nearest town that are open until 8pm on Tuesday evenings.
Today, this task requires search engines that are individually tailored to every website being searched. The semantic web provides a common standard (RDF) for websites to publish the relevant information in a more readily machine-processable and integratable form.
It derives from W3C director Tim Berners -Lee vision of the Web as a universal medium for data ,information and knowledge exchange.
Tim Berners-Lee originally expressed the vision of the semantic web as follows
I have a dream for the Web [in which computers] become capable of analyzing all the data on the Web – the content, links, and transactions between people and computers.
A Semantic Web‘, which should make this possible, has yet to emerge, but when it does, the day-to-day mechanisms of trade, bureaucracy and our daily lives will be handled by machines talking to machines.
The intelligent agents‘ people have touted for ages will finally materialize.