# Dynamic Linked Data: A SPARQL Event Processing Architecture
## 1 Introduction
By that time, research efforts on developing Linked Data have been made in several directions, including standards (e.g., SPARQL 1.1 Protocol ([[https://www.w3.org/TR/sparql11-protocol/](https://www.w3.org/TR/sparql11-protocol/)]([https://www.w3.org/TR/sparql11-protocol/](https://www.w3.org/TR/sparql11-protocol/))), SPARQL 1.1 Query language ([[https://www.w3.org/TR/sparql11-query/](https://www.w3.org/TR/sparql11-query/)]([https://www.w3.org/TR/sparql11-query/](https://www.w3.org/TR/sparql11-query/))), SPARQL 1.1 Update language ([[https://www.w3.org/TR/sparql11-update/](https://www.w3.org/TR/sparql11-update/)]([https://www.w3.org/TR/sparql11-update/](https://www.w3.org/TR/sparql11-update/))), JSON-LD ([[https://json-ld.org/spec/latest/json-ld/](https://json-ld.org/spec/latest/json-ld/)]([https://json-ld.org/spec/latest/json-ld/](https://json-ld.org/spec/latest/json-ld/))), Linked Data Platform 1.0 ([[https://www.w3.org/TR/ldp/](https://www.w3.org/TR/ldp/)]([https://www.w3.org/TR/ldp/](https://www.w3.org/TR/ldp/)))), ontologies and vocabularies (e.g., OWL ([[https://www.w3.org/TR/owl2-primer/](https://www.w3.org/TR/owl2-primer/)]([https://www.w3.org/TR/owl2-primer/](https://www.w3.org/TR/owl2-primer/))), CIDOC-CRM ([[http://www.cidoc-crm.org/Version/version-6.2.1](http://www.cidoc-crm.org/Version/version-6.2.1)]([http://www.cidoc-crm.org/Version/version-6.2.1](http://www.cidoc-crm.org/Version/version-6.2.1))), W3C OWL Time ([[https://www.w3.org/TR/owl-time/](https://www.w3.org/TR/owl-time/)]([https://www.w3.org/TR/owl-time/](https://www.w3.org/TR/owl-time/))), Semantic Sensor Network Ontology ([[https://www.w3.org/TR/vocab-ssn/](https://www.w3.org/TR/vocab-ssn/)]([https://www.w3.org/TR/vocab-ssn/](https://www.w3.org/TR/vocab-ssn/))), schema.org([[http://schema.org/](http://schema.org/)]([http://schema.org/](http://schema.org/))), RDF Data Cube Vocabulary ([[https://www.w3.org/TR/vocab-data-cube/](https://www.w3.org/TR/vocab-data-cube/)]([https://www.w3.org/TR/vocab-data-cube/](https://www.w3.org/TR/vocab-data-cube/))), just to mention a few), RDF stores and SPARQL endpoints (e.g., Jena ([[https://jena.apache.org/index.html](https://jena.apache.org/index.html)]([https://jena.apache.org/index.html](https://jena.apache.org/index.html))), Fuseki ([[https://jena.apache.org/documentation/fuseki2/](https://jena.apache.org/documentation/fuseki2/)]([https://jena.apache.org/documentation/fuseki2/](https://jena.apache.org/documentation/fuseki2/))), Virtuoso ([[https://virtuoso.openlinksw.com/](https://virtuoso.openlinksw.com/)]([https://virtuoso.openlinksw.com/](https://virtuoso.openlinksw.com/))), Blazegraph ([[https://www.blazegraph.com/](https://www.blazegraph.com/)]([https://www.blazegraph.com/](https://www.blazegraph.com/)), Stardog ([[https://www.stardog.com/](https://www.stardog.com/)]([https://www.stardog.com/](https://www.stardog.com/))) and Amazon Neptune ([[https://aws.amazon.com/neptune/](https://aws.amazon.com/neptune/)]([https://aws.amazon.com/neptune/](https://aws.amazon.com/neptune/)))), tools (e.g., for ontologies editing, like Protege ([[https://protege.stanford.edu/](https://protege.stanford.edu/)]([https://protege.stanford.edu/](https://protege.stanford.edu/))) or RDF graphs visualization, like LodLive ([[http://en.lodlive.it/](http://en.lodlive.it/)]([http://en.lodlive.it/](http://en.lodlive.it/))) and Visual Data Web ([[http://www.visualdataweb.org/index.php](http://www.visualdataweb.org/index.php)]([http://www.visualdataweb.org/index.php](http://www.visualdataweb.org/index.php)))) and Semantic Web portals (e.g, DBpedia ([[http://wiki.dbpedia.org/](http://wiki.dbpedia.org/)]([http://wiki.dbpedia.org/](http://wiki.dbpedia.org/))), WiKidata ([[https://www.wikidata.org/wiki/Wikidata:Main_Page](https://www.wikidata.org/wiki/Wikidata:Main_Page)]([https://www.wikidata.org/wiki/Wikidata:Main_Page](https://www.wikidata.org/wiki/Wikidata:Main_Page)))).