Group items tagged

"This portal describes the Semantic Web features of the WikiPathways databases, such as the Resource Description Framework (RDF) translation, the ontology, and the new nanopublications. The WikiPathways RDF is provided as part of the monthly releases and contains the Curated and Reactome pathways. The RDF is split in two parts, the GPMLRDF part which contains a direct translation of the content in the GPML files, and a WPRDF part which contains the biology represented in the GPML"

The OWL Web Ontology Language is designed for use by applications that need to process the content of information instead of just presenting information to humans. OWL facilitates greater machine interpretability of Web content than that supported by XML, RDF, and RDF Schema (RDF-S) by providing additional expressive power along with a formal semantics. The group's work is complete with the publication of OWL 2 (Second Edition). There may be new Errata and discussion on public-owl-dev@w3.org.

CumulusRDF is an RDF store on cloud-based architectures. CumulusRDF provides a REST-based API with CRUD operations to manage RDF data. The current version uses Apache Cassandra as storage backend. A previous version is built on Google's AppEngine. CumulusRDF is licensed under GNU Affero General Public License.

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 an RDF graph to be completely written in a compact and natural text form, with abbreviations for common usage patterns and datatypes. Turtle provides levels of compatibility with the existing N-Triples format as well as the triple pattern syntax of the SPARQL W3C Recommendation.

playground for working with RDF.rb, a Ruby toolkit for working with the Semantic Web and Linked Data. RDF.rb is composed of a number of RubyGems, most implemented in pure Ruby, that implement various aspects of the Resource Description Framework, the language of the Semantic Web.

"The OpenLink Data Explorer, or ODE, (formerly known as the OpenLink RDF Browser) is an RDF Data Browser implemented by OpenLink Software using the open source OpenLink AJAX & AJAR Toolkit (OAT). ODE provides a Web browser driven interface for interacting with RDF-based Linked Data via a combination of (X)HTML, AJAR, and Hyperdata links."

DBTune hosts a number of servers, providing access to music-related structured data, in a Linked Data fashion. It now provides access to more than 14 billion RDF triples. All the services hosted here are based on open Web standards such as RDF and SPARQL.

Graphite is an open source PHP Library, built on top of ARC2, to make it easy to do stuff with RDF data really quickly, without having to naff around with databases. It is not intended to be scalable, or a way of authoring RDF data. There's plenty of stuff out there already to do that. It is very similar to EasyRDF and SimpleGraph, and I've lifted ideas from these, and they have features that Graphite doesn't. Use what works for you.

"A PHP library designed to make it easy to consume and produce RDF. Designed for use in mixed teams of experienced and inexperienced RDF developers. Written in PSR-2 compliant PHP and tested extensively using PHPUnit."

"Microdata to RDF Distiller This service implements the W3C IG Note on converting microdata to RDF."

"Semantic Radar is a semantic metadata detector for Mozilla Firefox. It detects the presence of SIOC, FOAF and DOAP as well as generic RDF and RDFa data in a webpage, and displays icons in the browser's status bar when one of these data formats is found. By clicking on an icon the user can browse the RDF data in an online semantic browser. It looks for RDF auto-discovery links generated by data export plugins to discover semantic data."

RDF format transformations http://triplr.org/output/source-uri output-format is one of html, json, ntriples, rdf or turtle.  source-uri is like example.org/foo/bar

Publicly available collections of RDF and web services that return RDF. Corrections and new listings welcome on the rdfdata.org wiki.

VoID (from "Vocabulary of Interlinked Datasets") is an RDF based schema to describe linked datasets. With VoID the discovery and usage of linked datasets can be performed both effectively and efficiently. A dataset is a collection of data, published and maintained by a single provider, available as RDF, and accessible, for example, through dereferenceable HTTP URIs or a SPARQL endpoint.

The Ookaboo RDF dump contains metadata for nearly 1,000,000 public domain and Creative Commons images of more than 500,000 precise topics such as places, people and organism classifications linked to DBpedia and Freebase.

An RDF library in Scala

LODSPeaKr is a small and simple system that allows you to publish your RDF data in a fast way and without much effort. LODSPeaKr allows you to publish your data in several machine-processable syntaxes (RDF/XML, Turtle, N-Triples) as well as in HTML.

a standard conversation of Princeton WorldNet to RDF/OWL

OpenStructs is an education and distribution site dedicated to open source software for converting, managing, viewing and manipulating structured data. Structured data can represent any existing data struct from the simplest attribute-value pair formats to fully specified relational database schema. Material on this OpenStructs site ranges from individual tools to complete open semantic frameworks (OSF) with which to builld comprehensive semantic instances. All OpenStructs tools are premised on the canonical RDF (Resource Description Framework) data model. Thus, OpenStructs tools either convert existing data structures to RDF, extract structure from content as RDF, or manage and manipulate RDF. All OpenStructs tools and approaches are as compliant as possible with existing open standards from the W3C. The intent is to achieve maximum data and software interoperabililty.

"Jena is a Java framework for building Semantic Web applications. It provides a programmatic environment for RDF, RDFS and OWL, SPARQL and includes a rule-based inference engine. Jena is open source and grown out of work with the HP Labs Semantic Web Programme. "