Thomas Neumann: D5: Databases and Information Systems (Max-Planck-Institut für Informatik)
RDF-3X © 2008 Thomas Neumann Overview: RDF-3X is the experimental RDF storage and retrieval system described in Thomas Neumann, Gerhard Weikum. RDF-3X: a RISC-style Engine for RDF. JDMR (formely Proc. VLDB) 2008. The source code is available for non-commercial usage: RDF-3X by Thomas Neumann is licensed under a Creative Commons Attribution-Noncommercial-Share Alike 3.0 Unported License. Usage: RDF
The Enterprise Knowledge Graph Platform | Stardog
Conversational Data for the Enterprise Change your relationship with enterprise data: ask any question and get an accurate, trusted, and timely answer immediately. Streamline data analytics With ready access to the richest flexible semantic layer, explainable AI, and reusable data modeling, data engineers and scientists can be 95% more productive — create and expand semantic data models, understa
How to publish opening hours in RDF - ANSWERS
It looks like there are several proposals how to publish opening hours in RDF. Are there any real world applications with actual opening hours? I've read that the GoodRelation ontology should fit but only if your opening hours are very simple. I've also seen some artificial toy examples and discussions (for instance at Code4Lib). The opening hours should allow for day ranges and multiple time rang
Linked Data, RDF, and SPARQL :: Oracle Alchemist
Getting Into Linked Data and the Semantic Web This is a post about the RDF metadata model and SPARQL query language, two components of the Linked Data structured data methodology. All of this is part of the collective vision known as the Semantic Web–a Web of Data that can be consumed by both humans and machines alike. The Lay of Linked Data I walked through the index forests, simply upon a lark A
How RDF Databases Differ from Other NoSQL Solutions - The Datagraph Blog
This started out as an answer at Semantic Overflow on how RDF database systems differ from other currently available NoSQL solutions. I've here expanded the answer somewhat and added some general-audience context. RDF database systems are the only standardized NoSQL solutions available at the moment, being built on a simple, uniform data model and a powerful, declarative query language. These syst
ARC2によるRDFグラフの視覚化: Turtle, RDF/XML, JSON-LD, TriG, Microdata
music & knowledge sharing RDFグラフの視覚化 Turtle, RDF/XML, JSON-LD, TriG, MicrodataテキストエリアにTurtle、RDF/XML、JSON-LD、TriGもしくはMicrodataで記述したRDFを入力し、「グラフ描画」ボタンを選択してください。MicrodataはHTML断片でもかまいません。URIをコンパクトに描画したい場合は「URIを修飾名表記する」チェックを有効にしてください。 Input Turtle, RDF/XML, JSON-LD, Microdata or TriGserialized RDF in the textarea and select "Draw" button. Microdata can be a fragment HTML.
LODRefine - home
Project page for LODRefineLODRefine - new version LODGrefine has been migrated from GoogleRefine to OpenRefine to reflect the changes of ownership over Google Refine, which was now handed over to the Community - us! Find out more Crowdsourcing support LODRefine has now also support for crowdsourcing. You can easily create a new crowdsourcing project and upload your data to be evaluated, reconciled
The D2RQ Platform – Accessing Relational Databases as Virtual RDF Graphs
The D2RQ Platform is a system for accessing relational databases as virtual, read-only RDF graphs. It offers RDF-based access to the content of relational databases without having to replicate it into an RDF store. Using D2RQ you can: query a non-RDF database using SPARQL access the content of the database as Linked Data over the Web create custom dumps of the database in RDF formats for loading i
4store - Scalable RDF storage
4store is a fast, scalable clustered RDF database4store, an efficient, scalable and stable RDF database 4store was designed by Steve Harris and developed at Garlik to underpin their Semantic Web applications. It has been providing the base platform for around 3 years. At times holding and running queries over databases of 15GT, supporting a Web application used by thousands of people.
The Problem with RDF and Nuclear Power | The Beautiful, Tormented Machine
The Beautiful, Tormented Machine Art, technology and leaving the world better off than we found it. Full disclosure: I am the chair of the RDFa Working Group, the JSON-LD Community Group, a member of the RDF Working Group, as well as other Semantic Web initiatives. I believe in this stuff, but am critical about the path we’ve been taking for a while now. The Resource Description Framework (a model
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