Notation3 (original) (raw)
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Compact non-XML format for RDF models
| Notation3 | |
|---|---|
| Filename extension | .n3 |
| Internet media type | text/n3;charset=utf-8 |
| Developed by | Tim Berners-Lee |
| Type of format | semantic web |
| Container for | RDF data |
| Standard | n3 |
| Website | www.w3.org/TeamSubmission/n3/ |
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. A formalization of the logic underlying N3 was published by Berners-Lee and others in 2008.[1]
N3 has several features that go beyond a serialization for RDF models, such as support for RDF-based rules. Turtle is a simplified, RDF-only subset of N3.
The following is an RDF model in standard XML notation:
<rdf:RDF xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns:dc="" title="undefined" rel="noopener noreferrer">http://purl.org/dc/elements/1.1/"> <rdf:Description rdf:about="" title="undefined" rel="noopener noreferrer">https://en.wikipedia.org/wiki/Tony_Benn"> dc:titleTony Benn dc:publisherWikipedia
may be written in Notation3 like this:
@prefix dc: http://purl.org/dc/elements/1.1/.
https://en.wikipedia.org/wiki/Tony_Benn dc:title "Tony Benn"; dc:publisher "Wikipedia".
This N3 code above would also be in valid Turtle syntax.
Comparison of Notation3, Turtle, and N-Triples
[edit]
| Feature | Notation3 | Turtle | N-Triples | |
|---|---|---|---|---|
| Character encoding | UTF-8 | ASCII | ||
| Directives | @base | Yes | Yes | No |
| @forAll | Yes | No | No | |
| @forSome | Yes | No | No | |
| @keywords | Yes | No | No | |
| @prefix | Yes | Yes | No | |
| Lists | ||||
| () (DAML lists) | Yes | Yes | No | |
| { … } (statement lists) | Yes | No | No | |
| Literals | true / false(Boolean) | Yes | Yes | No |
| xsd:decimal (decimal arbitrary length) | Yes | Yes | No | |
| xsd:double (decimal double) | Yes | Yes | No | |
| xsd:integer (decimal integer) | Yes | Yes | No | |
| Syntactic sugar | RDF paths | Yes | No | No |
| QNames | Yes | Yes | No | |
| a/@a (equiv. to rdf:type) | Yes | Yes | No | |
| [] (shorthand for blank node) | Yes | Yes | No | |
| => (x implies y) | Yes | No | No | |
| <= (y implies x) | Yes | No | No | |
| = (x is equivalent to y) | Yes | No | No | |
| , (repeat object in list) | Yes | Yes | No | |
| ; (repeat subject/verb in list) | Yes | Yes | No |
- N-Triples
- Turtle (syntax)
- Notation 3 W3C Submission
- Notation 3 Outline on W3C Design Issues by Tim Berners-Lee
- Notation 3 Primer: Getting into RDF & Semantic Web using N3
- A Rough Guide to Notation3
- RDF for "Little Languages"
- An editing mode of N3 for Emacs
- An editing mode of N3 for vim
- An editing mode of N3 for textmate
- An editing mode of N3 for gedit
- EulerGUI, an IDE centered on N3 editor with translation from RDF, with validation, prefix management, uploading of resources, graph view, table view, etc.
- ^ Berners-Lee, T. I. M.; Connolly, D. A. N.; Kagal, L.; Scharf, Y.; Hendler, J. I. M. (2008). "N3Logic: A logical framework for the World Wide Web". Theory and Practice of Logic Programming. 8 (3): 249–269. arXiv:0711.1533. doi:10.1017/S1471068407003213.