A SYSTEM AND METHOD FOR DISTRIBUTED QUERYING OF LINKED SEMANTIC WEBS

摘要

A SYSTEM (100) FOR DISTRIBUTED QUERYING OF LINKED SEMANTIC WEBS (110) COMPRISING AT LEAST ONE LOD ONTOLOGIES INDEX (120) COMPRISING LOD ONTOLOGIES AND METADATA RELATING TO SAID LOD ONTOLOGIES; AT LEAST ONE CONCEPT INDEX (130) COMPRISING CONCEPTS AND CORRESPONDING URIs; AT LEAST ONE RELATION INDEX (140) COMPRISING RELATIONS AND CORRESPONDING URIs; QUERY INTERFACE (160) FOR ENTERING SPARQL QUERIES; AND A DISTRIBUTED QUERY ENGINE (150) IN COMMUNICATION WITH SAID LOD ONTOLOGIES INDEX (120), CONCEPT INDEX (130) AND RELATIONS INDEX (140) AND ADAPTED TO RECEIVE QUERIES FROM SAID QUERY INTERFACE (160); CHARACTERISED IN THAT SAID DISTRIBUTED QUERY ENGINE (150) IS ADAPTED TO: PARSE AND REWRITE QUERIES RECEIVED FROM SAID QUERY INTERFACE (160) AND GENERATE A PLURALITY OF SUB-QUERIES; IDENTIFY DEPENDENCIES WITHIN SAID SUB-QUERIES AND CHUNK SUB-QUERIES BASED ON ONTOLOGY; EXECUTE SUB-QUERIES BY SENDING TO RELEVANT SOURCE ONTOLOGY; AND MERGE RESULTS OBTAINED FROM EXECUTION OF SAID SUB-QUERIES. THE MOST ILLUSTRATIVE DRAWING IS FIG. 1.