ROXXI: Reviving witness dOcuments to eXplore eXtracted Information

In recent years, there has been considerable research on information extraction and constructing RDF knowledge bases. In general, the goal is to extract all relevant information from a corpus of documents, store it into an ontology, and answer future queries based only on the created knowledge base. Thus, the original documents become dispensable. On the one hand, an ontology is a convenient and non-redundant structured source of information, based on which specific queries can be answered efficiently. On the other hand, many users doubt the correctness of facts and ontology subgraphs presented to them as query results without proof. Instead, users often wish to verify the obtained facts or subgraphs by reading about them in context, i.e., in a document relating the facts and providing background information. In this demo, we present ROXXI, a system operating on top of an existing knowledge base and reviving the abandoned witness documents. In doing so, it goes the opposite way of i...

• Type: Journal
• Year: 2010
• Where: PVLDB
• Authors: Shady Elbassuoni, Katja Hose, Steffen Metzger, Ralf Schenkel
• Keywords: Documents, Information, Knowledge Base, PVLDB 2010