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neo4j open source nosql graph database »
"Neo4j is a graph database. It is an embedded, disk-based, fully transactional Java persistence engine that stores data structured in graphs rather than in tables. A graph (mathematical lingo for a network) is a flexible data structure that allows a more agile and rapid style of development."
Knowee - Your contacts, the webby way
Knowee is a web address book that lets you integrate distributed social graph fragments.
Understanding SPARQL
This tutorial introduces SPARQL and the data formats it is based on. It also covers the RDF, RDF Schema, OWL, and Turtle knowledge representation languages. With these languages, you build ontologies or domain models. For the example used throughout this tutorial, you'll build the ontologies and queries for a journaling and booking system to produce semantically tagged twitter-like micro-blogs. You'll query those blog entries to find those in your company with the skills to make up the team for a project that you are bidding for.
Demos - Data-gov Wiki
Visualisation interactive à partir des données brutes de data.gov
SIREn: Semantic Information Retrieval Engine
SIREn: Efficient semi-structured Information Retrieval for Lucene
openanzo - Trac
The Open Anzo project includes an open source enterprise-featured RDF quad store coupled with a unique semantic middleware platform. Together they provide developers a host of features necessary for the creation of sophisticated Semantic technology standard (RDF, OWL, SPARQL) grounded applications. Features include support for multiple users, distributed clients and services, offline work, real-time notification, named-graph modularization, versioning, access controls, and transactions with preconditions.
Wizbit
"Wizbit is a way to store and organise your data which remembers every change you make, synchronises without worry, and is browsable in terms of how you think about the data you're looking for."
Translate Atom to RDF using Java technology
Given that Resource Description Framework (RDF) query languages do not recognize documents that follow the Atom specification, how can you translate an Atom document into a distinct document that follows the RDF specification? The answer: Java technology. Learn how to make it happen.
freerisk
Freerisk is a project with the goal of making freely available the data, algorithms and tools necessary to perform risk modeling. We believe that risk management is too important to society to be an arcane subject or competitive advantage.
Getting started with RDFa: Creating a basic FOAF profile | webBackplane
Just over a year ago I wrote a blog post that showed how to create a FOAF profile on a web page, using RDFa. The idea was not only to show how easy it was to do in terms of the markup, but also to illustrate that once you are able to publish RDF via a
Aperture Framework
"Aperture is a Java framework for extracting and querying full-text content and metadata from various information systems (e.g. file systems, web sites, mail boxes) and the file formats (e.g. documents, images) occurring in these systems..."
triplify.org : Overview
Triplify provides a building block for the “semantification” of Web applications. Triplify is a small plugin for Web applications, which reveals the semantic structures encoded in relational databases by making database content available as RDF, JSON or Linked Data.
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Semantic Web
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