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Ernesto Krsulovic's Library tagged rdf →  View Popular

22 Oct 09

Virtuoso Open-Source Wiki : Main.VOSRDFFAQ

    • How Do You Put RDF Data Into Virtuoso?


      Virtuoso provides several load or data import functions that insert data into the triple store.
      These include:


      • Copy RDF files into WebDAV after mounting Virtuoso's WebDAV repository via your operating systems WebDAV filesystem mount feature
      • Upload RDF files via the OpenLink Data Spaces Briefcase (Virtuoso automatically generates Triple Statements from WebDAV metadata)
      • Virtuoso developers can use the Function: RDF EXP_LOAD_RDFXML() that parses RDF/XML, Turtle, or N3 / N-Triples RDF graphs and then generates appropriate Triples Statements in Triple Store (the system table: RDF_QUAD).

      • Direct insertion of rows into the RDF_QUAD table for nodes (RDF QUAD_URI) or literal values (RDF_QUAD_URI_L).

      • Mapping of Relational data from native or 3rd party heterogeneous data sources into RDF resulting in the generation of Triple Statements for Relational Entities
13 Oct 09

N-Quads: Extending N-Triples with Context

  • This document describes N-Quads, a format that extends N-Triples with context. Each triple in an N-Quads document can have an optional context value.
12 Oct 09

Bill de hÓra: RDF Name Service

  • I'm starting to think that RDF needs a DNS
  • For the most part, always going back to the origin doesn't scale, inferential fidelity be damned. To make that work we'd need a P2P, not client-server architecture, or much mroe likely, we need to build the semantic web loading tools with caching and staleness in mind, if not the reasoners themselves. Technologies like client-sided caches and offline access need to improve, greatly. For the reasoners proper, Truth Maintenance Systems are the first port of call.
10 Oct 09

Stefano's Linotype ~ Closed World vs. Open World: the First Semantic Web Battle

Closed World vs. Open World: the First Semantic Web Battle June 16, 2005 ~ 13:47 Not many realize this, but the reason why Semantic Web technologies feel somewhat exotic (or should I say esoteric?) is the fact that they are based on the "open world" assum

www.betaversion.org/...91 - Preview

development blog open semanticweb semantic rdf ontology

  • Why so? Well, because the close world assumption implies that everything we don’t know is false, while the open world assumption states that everything we don’t know is undefined.
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