LOD2 technology stack

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Related terms:
Virtuoso Universal ServerVirtuoso Universal Server is a middleware and database engine hybrid that combines the functionality of a traditional RDBMS, ORDBMS, virtual database, RDF, XML, free-text, web application server and file server functionality in a single system. Rather than have dedicated servers for each of the ..., MonetDBMonetDB is a open-source database system for high-performance applications in data mining, OLAP, GIS, XML Query, text and multimedia retrieval. MonetDB often achieves a significant speed improvement for SQL and XQuery over other open-source systems. Use the product strands as your roadmap for ..., Silk Link Discovery FrameworkThe Silk framework is a tool for discovering relationships between data items within different Linked Data sources. Data publishers can use Silk to set RDF links from their data sources to other data sources on the Web. (http://www4.wiwiss.fu-berlin.de/bizer/silk/), SemMFFlexible framework for calculating semantic similarity between objects that are represented as arbitrary RDF graphs. (http://semmf.ag-nbi.de/doc/index.html), Web Information Quality Assessment FrameworkInformation providers on the Web have different levels of knowledge, different views of the world and different intensions. Thus, provided information may be wrong, biased, inconsistent or outdated. Before information from the Web is used to accomplish a specific task, its quality should be ..., Helmut Nagy, sig.maThe http://sig.ma service was created as a demonstration of live, on the fly Web of Data mashup. Provide a query and Sig.ma will demonstrate how the Web of Data is likely to contain surprising structured information about it (pages that embed RDF, RDFa, Microdata, Microformats). By using the ..., SparallaxFaceted browsing interface for SPARQL endpoints, based on Freebase Parallax. http://sparallax.deri.ie/), Sindice, PoolParty Semantic SuiteWeb based ontology manager which can serve as a central hub for your knowledge organization. With PoolParty you can organize and maintain knowledge models based on widely accepted specifications like RDF, SPARQL and SKOS., OntoWikiSemantic Wiki providing support for agile, distributed knowledge engineering scenarios. OntoWiki facilitates the visual presentation of a knowledge base as an information map, with different views on instance data. It enables intuitive authoring of semantic content, with an inline editing mode ..., D2R ServerD2R Server is a tool for publishing relational databases on the Semantic Web. It enables RDF and HTML browsers to navigate the content of the database, and allows applications to query the database using the SPARQL query language. (http://www4.wiwiss.fu-berlin.de/bizer/d2r-server/), Comprehensive Knowledge Archive NetworkSystem for the creation of a registry of open knowledge packages and projects that enables to find, share and reuse open content and data, especially in ways that are machine automatable. (http://www.ckan.net), DL-LearnerTool for supervised Machine Learning in OWL and Description Logics. The DL-Learner software learns concepts in Description Logics (DLs) from user-provided examples. Equivalently, it can be used to learn classes in OWL ontologies from selected objects. It extends Inductive Logic Programming to ..., DBpedia Information Extraction Framework, TriplifyPlugin for Web applications, which reveals the semantic structures encoded in relational databases by making database content available as RDF, JSON or Linked Data. (http://dl-learner.org/Projects/Triplify)

Broader terms:
LOD2EU-funded (FP7) research project aiming to take the Web of Linked Data to the next level. Main research challenges: improve coherence and quality of data published on the Web, close the performance gap between relational and RDF data management, establish trust on the Linked Data Web and ...

Linked data frontend for LOD2 technology stack.