The Semantic Web is an extension of the current Web [1] that allows the meaning of information
to be precisely described in terms of well-defined vocabularies that are understood by people and
computers. On the Semantic Web information is described using a new W3C standard called the
Resource Description Framework (RDF). Semantic Web Search is a search engine for the
Semantic Web. Current Web sites can be used by both people and computers to precisely locate
and gather information published on the Semantic Web. Ontology [2] is one of the most
important concepts used in the semantic web infrastructure, and RDF(S) (Resource Description
Framework/Schema) and OWL (Web Ontology Languages) are two W3C recommended data
representation models which are used to represent ontologies. The Semantic Web will support
more efficient discovery, automation, integration and reuse of data and provide support for
interoperability problem which can not be resolved with current web technologies. Currently
research on semantic web search engines are in the beginning stage, as the traditional search
engines such as Google, Yahoo, and Bing (MSN) and so forth still dominate the present markets
of search engines.
Most of the search engines search for keywords to answer the queries from users. The search
engines usually search web pages for the required information. However they filter the pages
from searching unnecessary pages by using advanced algorithms. These search engines can
answer topic wise queries efficiently and effectively by developing state-of art algorithms.
However they are vulnerable in answering intelligent queries from the user due to the dependence
of their results on information available in web pages. The main focus of these search engines is
solving these queries with close to accurate results in small time using much researched
algorithms. However, it shows that such search engines are vulnerable in answering intelligent
queries using this approach. They either show inaccurate results with this approach or show
accurate but (could be) unreliable results. With the keywords based searches they usually provide