Dataset usage的BP

这个词汇DUV属于以下命名空间之一：

Prefix	Namespace
biro	http://purl.org/spar/biro/
cito	http://purl.org/spar/cito/
cnt	http://www.w3.org/2011/content#
dcat	http://www.w3.org/ns/dcat#
dct	http://purl.org/dc/terms/
dctype	http://purl.org/dc/dcmitype/
disco	http://rdf-vocabulary.ddialliance.org/discovery#
dqv	http://www.w3.org/ns/dqv#
duv	http://www.w3.org/ns/duv#
fabio	http://purl.org/spar/fabio/
foaf	http://xmlns.com/foaf/0.1/
frbr	http://purl.org/vocab/frbr/core#
oa	http://www.w3.org/ns/oa#
pav	http://purl.org/pav
rdf	http://www.w3.org/1999/02/22-rdf-syntax-ns#
rdfs	http://www.w3.org/2000/01/rdf-schema#
skos	http://www.w3.org/2004/02/skos/core#
vann	http://purl.org/vocab/vann/
xsd	http://www.w3.org/2001/XMLSchema#

从其他相关词汇中的类和属性中作了广泛的扩展，起到胶水作用，但本身也定义了一些类和属性。

主要涉及作者和读者。

作者要从读者读取反馈，引用，和订正。三种模型有

核心词汇为dcat:Dataset

duv:Feedback继承自oa:Annotation（web annotation）

web annotation模型中用motivation描述annotation的角色。

duv:Feedback中有一属性oa:motivated_by，联系motivation和feedback。

web annotation其实是资源描述（注解）的通用办法，也可以用来描述duv:dataset（超出这范围了）。

以下为为一总结。

举几个例子：

Example 1 - Usage: A 2-D charting application developed to create temperature plots that consumes temperature readings from a dataset to produce the plot.

Example 2 - Feedback: Laufer provides feedback about the temperature readings dataset.

Example 3 - Citation: A technical report :paperA identified by a DOI cites the dataset. The :dataset-03312013 is also identified by a digital object identifier (DOI).

关于RDF 1.1 N-triples

triple的production为subject+predicate+object

N-triple的production为

[1]	ntriplesDoc	::=	triple? (EOLtriple)* EOL?
[2]	triple	::=	subjectpredicate object '.'
[3]	subject	::=	IRIREF| BLANK_NODE_LABEL
[4]	predicate	::=	IRIREF
[5]	object	::=	IRIREF| BLANK_NODE_LABEL| literal
[6]	literal	::=	STRING_LITERAL_QUOTE ('^^'IRIREF | LANGTAG)?

并且定义了新media: application/n-triples

Turtle parser不需要为n-triple添加辅助性的parsing directive.

RDF graph represented by an N-Triples document contains exactly each triple matching the N-Triplestriple production.

IRIs (internationalized resource identifier )may be written only as absolute IRIs. IRIs are enclosed in '<' and '>' and may contain numeric escape sequences (described below). For example <http://example.org/#green-goblin>.

IRI作为标识符

N-Triples是一种通用的assertion语言，对给定数据进行评估得出更多assertion，最终解析出IRI。

要考虑解析的安全问题。

断言式语言如SAML（安全断言标记语言）。