Table of Contents
Is DBpedia reliable?
For the API availability, DBpedia is the most reliable; its SPARQL endpoind is roughly available at every time.
What is DBpedia used for?
DBpedia allows users to semantically query relationships and properties of Wikipedia resources, including links to other related datasets.
Is DBpedia an ontology?
The DBpedia Ontology is a shallow, cross-domain ontology, which has been manually created based on the most commonly used infoboxes within Wikipedia. The ontology currently covers 685 classes which form a subsumption hierarchy and are described by 2,795 different properties.
What is DBpedia graph?
The Knowledge Graph is the KBpedia knowledge structure, which itself combines seven public knowledge bases — Wikipedia, Wikidata, schema.org, DBpedia, GeoNames, OpenCyc, and the UNSPSC products and services — and their concepts, entity types, attributes and relations.
Is DBpedia a knowledge graph?
DBpedia is a crowd-sourced community effort to extract structured content from the information created in various Wikimedia projects. This structured information resembles an open knowledge graph (OKG) which is available for everyone on the Web.
How do I find DBpedia?
You can run queries against DBpedia using: the OpenLink Interactive SPARQL Query Builder (iSPARQL) at http://dbpedia.org/isparql. the SNORQL query explorer at http://dbpedia.org/snorql (does not work with Internet Explorer)
How do you write queries in SPARQL?
A SPARQL query comprises, in order:
- Prefix declarations, for abbreviating URIs.
- Dataset definition, stating what RDF graph(s) are being queried.
- A result clause, identifying what information to return from the query.
- The query pattern, specifying what to query for in the underlying dataset.
How do you write queries in Sparql?
How do I find Dbpedia?
What is DBpedia URI?
The DBpedia Lookup service is an entity retrieval service for DBpedia entities that resolves keywords to resource identifiers. Thus it can be used to enrich plain text documents or tables with DBpedia URIs. Linking your labels to resource identifiers opens the door to the linked data world for the task at hand.
What is the difference between SPARQL and SQL?
Comparing RDF and SQL data. SQL does this by accessing tables in relational databases, and SPARQL does this by accessing a web of Linked Data. (Of course, SPARQL can be used to access relational data as well, but it was designed to merge disparate sources of data.)
Does Neo4j support SPARQL?
Since the Neo4j graph database is not a triple store, it is not equipped with a SPARQL query engine. However, Neo4j offers Cypher and for many semantic applications it should be possible to translate SPARQL to Cypher queries.
What does DBpedia stand for in Wikipedia dataset?
DBpedia (from “DB” for “database”) is a project aiming to extract structured content from the information created in the Wikipedia project. DBpedia allows users to semantically query relationships and properties of Wikipedia resources, including links to other related datasets. …
When did the DBpedia Association get its start?
The DBpedia Association was founded in 2014 to support DBpedia and the DBpedia Community. Since then we are making steady progress towards professionalizing DBpedia for its users and forming an effective network out of the loosely organised DBpedia community.
How does DBpedia extract information from Wikipedia articles?
DBpedia extracts factual information from Wikipedia pages, allowing users to find answers to questions where the information is spread across multiple Wikipedia articles. Data is accessed using an SQL -like query language for RDF called SPARQL.
How many classes are there in the DBpedia database?
The DBpedia ontology is the heart of DBpedia. It evolved into a successful crowd-sourcing effort with the DBpedia community continuously contributing to the ontology schema. Discover the 768 classes and 3000 properties of this large cross-domain ontology! Did you consider this information as helpful?