Semantic Search engine

Ontology based information retrieval model for semantic web Sheik sajid (10mse1104)Mentor:Prof.Shri Devi

MotivationThe Current web-browsers and search engines are based on the web 2.0. The companies like Google(Freebase,Rdfa,Snippets) and face- book(Open Graph) had added semantics to the data on the web and developing the smart applications.The Data on the web is Linked Data and it needs to be analyzed rather than the unstructured one , query results should be distinct.

Problem statementWhen a user queries about some data, the machine interpretation of the data is necessary. The machine should have knowledge about the user query.Web engines must also act as the personal assistant and smart machines have to be developed.Web engines are still using the text based search to query in complex queries.

Text search leads to hit the irrelevant pages and retrieve results which arent useful to the user request and To increase the precision and recall semantic web is needed.Semantics means adding context to the data on the web. Information is categorized and stored in such away that machine can understand as human.

Key concepts in building semantic webRDF,RDFS(Resource Description framework).OWL-ontology vocabulary layer machine process able semantics.SPARQL(Query language).Triple-stores

Architectural Design

MethodologyFor Knowledge gathering protg tool is used and it helps in reasoningApache jena is useful building RDF-nodes and fuseki-server is used for querying the semantic data.A sparql query engine is developed by ARC2-PHP based library.

The semantic search is based on the triple stores(Subject,Predicate,Object) so the parameters are defined in the similar way.Retrieve the results in the desired format.Display the relevant information in presentable format

ModulesBuilding ontology's in eclipse and protg reasoner is used to identify the unknown knowledgeRDF parsers/serializers used for sparql queriesWebsite for Executing sparql query.Get the user inputs and perform semantic search and display the results in presentable format