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Papers in this group

1 - 20 of 43
  1. Ontology summarization is very important to quick under- standing and selection of ontologies. In this paper, we study extractive summarization of ontology. We propose a notion of RDF sentence as the basic unit of summarization. An RDF Sentence…
  2. The need to share data with collaborators motivates custodians and users of relational databases (RDB) to expose relational data on the Web of Data. This document defines a direct mapping from relational data to RDF. This definition provides…
  3. This paper describes the persistence subsystem of Jena2 which is intended to support large datasets. This paper describes its features, the changes from Jena1, relevant details of the implementation and performance tuning issues. Query optimization…
  4. This paper discusses RDF related work in the context of OpenLink Virtuoso, a general purpose relational federated database and applications platform. We discuss adapting a relational engine for native RDF support with dedicated data types, bitmap…
  5. This document is the specification of the Efficient XML Interchange (EXI) format. EXI is a very compact representation for the Extensible Markup Language (XML) Information Set that is intended to simultaneously optimize performance and the…
  6. This paper reports on the results of an independent evalu- ation of the techniques presented in the VLDB 2007 paper Scalable Semantic Web Data Management Using Vertical Partitioning, authored by D. Abadi, A. Marcus, S. R. Mad- den, and K. Hollenbach…
  7. RDF is a directed, labeled graph data format for representing information in the Web. This specification defines the syntax and semantics of the SPARQL query language for RDF. SPARQL can be used to express queries across diverse data sources,…
  8. The Resource Description Framework (RDF) is a general-purpose language for representing information in the Web. This document defines a textual syntax for RDF called Turtle that allows RDF graphs to be completely written in a compact and natural…
  9. Increasing amounts of RDF data are available on the Web for consumption by Semantic Web browsers and indexing by Semantic Web search engines. Current Semantic Web publishing practices, however, do not directly support efficient discovery and…