Infobox file format name Notation3 icon logo extension .n3 mime text n3 charset utf 8 type code uniform type magic owner Tim Berners Lee genre Semantic Web semantic web container for Resource Description Framework RDF data extended from extended to standard http www.w3.org DesignIssues Notation3.html Specification Notation3 , or N3 as it is more commonly known, is a shorthand non XML serialization of Resource Description Framework models, designed with human readability in mind N3 is much more compact and readable than XML RDF notation. The format is being developed by Tim Berners Lee and others from the Semantic Web community. N3 has several features that go beyond a serialization for RDF models, such as support for RDF based rules. Turtle syntax Turtle is a simplified, RDF only subset of N3. Examples This RDF model in standard XML notation source lang xml rdf RDF xmlns rdf http www.w3.org 1999 02 22 rdf syntax ns xmlns dc http purl.org dc elements 1.1 rdf Description rdf about http en.wikipedia.org wiki Tony Benn dc title Tony Benn dc title dc publisher Wikipedia dc publisher rdf Description rdf RDF source may be written in Notation 3 like this pre prefix dc http purl.org dc elements 1.1 . http en.wikipedia.org wiki Tony Benn dc title Tony Benn dc publisher Wikipedia . pre This example would also be valid Turtle syntax Turtle . External links http www.w3.org TeamSubmission n3 Notation 3 W3C Submission http www.w3.org DesignIssues Notation3.html Notation 3 Outline on W3C Design Issues by Tim Berners Lee http www.w3.org 2000 10 swap Primer Notation 3 Primer Getting into RDF & Semantic Web using N3 http infomesh.net 2002 notation3 A Rough Guide to Notation3 http www.ninebynine.org RDFNotes RDFForLittleLanguages.htm RDF for Little Languages http larve.net people hugo 2003 scratchpad NotationThreeEmacsMode.html An editing mode of N3 for Emacs http www.vim.org scripts script.php ... An editing mode of N3 for textmate Semantic Web Category RDF de Notation 3 Informatik fr Notation3 ... more details
Cwm pronounced koom is general purpose data processing software for the semantic web , similar to sed or awk for text files or XSLT for XML . It is a forward chaining semantic reasoner that can be used for querying, checking, transforming and filtering information. Its core language is Resource Description Framework RDF , extended to include Rule of inference rules , it can use Resource Description Framework RDF XML or RDF Notation3 N3 see http www.w3.org 2000 10 swap Primer Notation3 Primer serializations. cwm can perform the following tasks Parse and pretty print the following RDF formats XML RDF, Notation3 , and N Triples . Store triples in a queryable triplestore a triples database . Perform inference s as a forward chaining FOPL inference engine . Perform builtin functions such as comparing strings, retrieving resources, all using an extensible builtins suite. cwm was written in Python programming language Python from 2000 10 onwards by Tim Berners Lee and Dan Connolly of the W3C . External links http www.w3.org 2000 10 swap doc cwm cwm homepage http infomesh.net 2001 cwm Information about CWM TimBL s Closed World Machine Category Python software Category Semantic Web Category Web services ... more details
context date June 2011 Infobox file format name Terse RDF Triple Language icon logo extension .ttl mime text turtle type code uniform type magic owner http www.dajobe.org Dave Beckett genre Semantic Web container for Resource Description Framework RDF data extended from N Triples extended to standard http www.w3.org TeamSubmission turtle Specification Turtle Terse RDF Triple Language is a serialization format for Resource Description Framework RDF graphs. A subset of Tim Berners Lee and Dan Connolly s Notation3 N3 language, it was defined by Dave Beckett, and is a superset of the minimal N Triples format. Unlike full N3, Turtle doesn t go beyond RDF s graph model. SPARQL uses a similar N3 subset to Turtle for its graph patterns, but using N3 s brace syntax for delimiting subgraphs. Turtle was accepted as a first working draft by the World Wide Web Consortium W3C RDF Working Group on 9 August 2011. ref cite web url http www.w3.org TR 2011 WD turtle 20110809 title Turtle Terse RDF Triple Language date 9 August 2011 publisher World Wide Web Consortium W3C accessdate 27 November 2011 ref Turtle is popular among Semantic Web developers as a human friendly alternative to RDF XML . A significant proportion of RDF toolkits include Turtle parsing and serializing capability. Some examples are Redland RDF Application Framework Redland , Sesame framework Sesame , Jena framework Jena and RDFLib . Example nowiki prefix rdf http www.w3.org 1999 02 22 rdf syntax ns . nowiki nowiki prefix dc http purl.org dc elements 1.1 . nowiki nowiki prefix ex http example.org stuff 1.0 . nowiki nowiki http www.w3.org TR rdf syntax grammar nowiki nowiki dc title RDF XML Syntax Specification Revised nowiki ex editor ex fullname Dave Beckett nowiki ex homePage http purl.org net dajobe nowiki . Turtle examples are also valid Notation3 . The MIME type of Turtle is code text turtle code . The character encoding of Turtle content is always UTF 8 . ref cite web url http www.iana.org assignments media ty ... more details
N3 may refer to TOC right Roads N3 road Belgium , one of the national roads in Belgium N3 road Ireland , a National Primary Route N3 road Senegal , one of the national roads in Senegal N3 road South Africa , a road connecting Johannesburg to Durban Transport N3 class battleship , a Royal Navy battleship design that was never built SP&S Class N 3 , a steam locomotives class from the Spokane, Portland and Seattle Locomotive Roster USS N 3 SS 55 , a 1915 coastal defense submarine of the US Navy N3, European large goods vehicle s above 12 tonnes N3, IATA code for the Russian airline Omskavia Jet engine Terminology N sub 3 sub jet engines , the RPM for a third section in a jet engine Other Haplogroup N Y DNA , a former human Y chromosomal haplogroup, now N1c n 3, Omega 3 fatty acid Azide N sub 3 sub sup sup , an azide anion in chemistry N3 cis bis iso thiocyanato bis 2,2 bipyridyl 4,4 di carboxylato ruthenium II , a red dye using in dye sensitized solar cells Non small cell lung carcinoma staging Lymph nodes N N3 Lung cancer , metastasis to certain lymph nodes N3, the most recent version of the Nagravision conditional access system for cable and satellite television N3 NHS , the broadband network for the NHS in England N3, a postcode district in the N postcode area Ninety Nine Nights , a video game for the Xbox 360 Notation3 , a textual notation for the Resource Description Framework RDF N sub 3 sub the genus three non orientable 2 manifold surface N3 plugs are used for remote shutters on their high end Canon company Canon DSLR s. N3, a term used in online gaming which means no name noob A model number of the Yamaha AvantGrand piano See also ATC code N03 Antiepileptics , a subgroup of the Anatomical Therapeutic Chemical Classification System N03, the ICD 10 code for Nephritic syndrome Number Three disambiguation N 3 , number three Route nationale 3 , a road in France disambig de N3 fr N3 it N3 ja N3 nl N3 no N3 ... more details
In Resource Description Framework RDF , a blank node also called bnode is a node in an RDF graph representing a resource for which a URI or literal is not given. The resource represented by a blank node is also called an anonymous resource . By RDF standard a blank node can only be used as subject or object in an RDF triple, although in some syntaxes like Notation 3 ref Berners Lee, T. http www.w3.org DesignIssues Notation3.html Notation3 N3 A Readable RDF syntax , World Wide Web Consortium ref it is acceptable to use a blank node as a predicate. If a blank node has a node ID not all blank nodes are labeled in all RDF serializations , it is limited in scope to a serialization of a particular RDF graph, i.e. the node p1 in the subsequent example does not represent the same node as a node named p1 in any other graph. Example John has a friend born the 21st of April can be written with two triples linked by a blank node representing the anonymous friend of John. ex John foaf knows p1 p1 foaf birthDate 04 21 The first triple reads John knows p1 . The second triple reads p1 is born on April 21st ex John is a named resource, which means this resource is absolutely identified by the URI obtained by replacing the ex prefix by the XML namespace it stands for, such as nowiki http example.org Person John nowiki . p1 represents John s anonymous friend, not identified by a URI. One can know by the semantics declared in the FOAF software FOAF vocabulary that the class of p1 is foaf Person. RDF XML Notation In RDF XML syntax a blank node can be represented by nested elements, such as the following. foaf Person rdf about nowiki http example.org Person John nowiki foaf knows foaf Person foaf birthDate 04 21 foaf knows foaf Person If the same blank node is used more than once in the same RDF graph, it can be identified by a rdf nodeID attribute. This identification is limited to the local graph. For example to express that John and Mary have a common friend, one can write. foaf Perso ... more details
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