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Notes on RDF and URIs.

c-declarations
Joshua Potter 2024-07-28 17:29:08 -06:00
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notes/.obsidian.mobile

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---
title: Ontology
TARGET DECK: Obsidian::H&SS
FILE TAGS: ontology
tags:
- ontology
---
## Overview
Ontology is the philosophical study of being. Generally *things* are split into two broad categories: **abstract** and **concrete** things. These words are "terms of art" and their definition is not standardized in any way.
%%ANKI
Basic
What did Quine declare as *the* ontological question?
Back: "What is there?"
Reference: Simon Hewitt, “A Cardinal Worry for Permissive Metaontology,” _Metaphysica_ 16, no. 2 (September 18, 2015): 159–65, [https://doi.org/10.1515/mp-2015-0009](https://doi.org/10.1515/mp-2015-0009).
<!--ID: 1720912238054-->
END%%
%%ANKI
Basic
Who is attributed *the* ontological question?
Back: Willard Van Orman Quine.
Reference: Simon Hewitt, “A Cardinal Worry for Permissive Metaontology,” _Metaphysica_ 16, no. 2 (September 18, 2015): 159–65, [https://doi.org/10.1515/mp-2015-0009](https://doi.org/10.1515/mp-2015-0009).
<!--ID: 1720912259767-->
END%%
%%ANKI
Cloze
{Ontology} is the {philosophical study of being}.
Reference: Nikk Effingham, _An Introduction to Ontology_ (Cambridge: Polity Press, 2013).
<!--ID: 1720912238058-->
END%%
%%ANKI
Cloze
{Epistemology} is the {philosophical study of knowledge}.
Reference: Nikk Effingham, _An Introduction to Ontology_ (Cambridge: Polity Press, 2013).
<!--ID: 1720912238062-->
END%%
%%ANKI
Cloze
{Taxonomy} is the {branch of science concerned with categorization}.
Reference: Nikk Effingham, _An Introduction to Ontology_ (Cambridge: Polity Press, 2013).
<!--ID: 1720912238066-->
END%%
%%ANKI
Cloze
{Mereology} is the {philosophical study of part-whole relationships}.
Reference: Nikk Effingham, _An Introduction to Ontology_ (Cambridge: Polity Press, 2013).
<!--ID: 1720998380912-->
END%%
%%ANKI
Basic
What does Effingham mean when saying "concreta" and "abstracta" are terms of art?
Back: They are terms defined freely by a person to mean whatever one wants.
Reference: Nikk Effingham, _An Introduction to Ontology_ (Cambridge: Polity Press, 2013).
<!--ID: 1720894782942-->
END%%
%%ANKI
Cloze
In general, ontologists often categorize things as either {concreta} or {abstracta}.
Reference: Nikk Effingham, _An Introduction to Ontology_ (Cambridge: Polity Press, 2013).
<!--ID: 1720894782951-->
END%%
%%ANKI
Basic
Generally speaking, what does someone *probably* mean by "concrete" things?
Back: Things that exists in space and/or time.
Reference: Nikk Effingham, _An Introduction to Ontology_ (Cambridge: Polity Press, 2013).
<!--ID: 1720894782957-->
END%%
%%ANKI
Basic
Generally speaking, what does someone *probably* mean by "abstract" things?
Back: Things that exist in neither space nor time.
Reference: Nikk Effingham, _An Introduction to Ontology_ (Cambridge: Polity Press, 2013).
<!--ID: 1720894782965-->
END%%
%%ANKI
Basic
Is a material object considered concreta?
Back: Usually.
Reference: Nikk Effingham, _An Introduction to Ontology_ (Cambridge: Polity Press, 2013).
<!--ID: 1720894782971-->
END%%
%%ANKI
Basic
Is an immaterial object considered concreta?
Back: Possibly.
Reference: Nikk Effingham, _An Introduction to Ontology_ (Cambridge: Polity Press, 2013).
<!--ID: 1720894782978-->
END%%
%%ANKI
Basic
Is a material object considered abstracta?
Back: Not usually.
Reference: Nikk Effingham, _An Introduction to Ontology_ (Cambridge: Polity Press, 2013).
<!--ID: 1720894782984-->
END%%
%%ANKI
Basic
Is an immaterial object considered abstracta?
Back: Possibly.
Reference: Nikk Effingham, _An Introduction to Ontology_ (Cambridge: Polity Press, 2013).
<!--ID: 1720894782989-->
END%%
## Bibliography
* Nikk Effingham, _An Introduction to Ontology_ (Cambridge: Polity Press, 2013).
* Simon Hewitt, “A Cardinal Worry for Permissive Metaontology,” _Metaphysica_ 16, no. 2 (September 18, 2015): 159–65, [https://doi.org/10.1515/mp-2015-0009](https://doi.org/10.1515/mp-2015-0009).

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---
title: Properties
title: Ontology
TARGET DECK: Obsidian::H&SS
FILE TAGS: ontology::property
FILE TAGS: ontology::philosophy
tags:
- ontology
- property
---
## Overview
Ontology is the philosophical study of being. Generally *things* are split into two broad categories: **abstract** and **concrete** things. These words are "terms of art" and their definition is not standardized in any way.
%%ANKI
Basic
What did Quine declare as *the* ontological question?
Back: "What is there?"
Reference: Simon Hewitt, “A Cardinal Worry for Permissive Metaontology,” _Metaphysica_ 16, no. 2 (September 18, 2015): 159–65, [https://doi.org/10.1515/mp-2015-0009](https://doi.org/10.1515/mp-2015-0009).
<!--ID: 1720912238054-->
END%%
%%ANKI
Basic
Who is attributed *the* ontological question?
Back: Willard Van Orman Quine.
Reference: Simon Hewitt, “A Cardinal Worry for Permissive Metaontology,” _Metaphysica_ 16, no. 2 (September 18, 2015): 159–65, [https://doi.org/10.1515/mp-2015-0009](https://doi.org/10.1515/mp-2015-0009).
<!--ID: 1720912259767-->
END%%
%%ANKI
Cloze
{Ontology} is the {philosophical study of being}.
Reference: Nikk Effingham, _An Introduction to Ontology_ (Cambridge: Polity Press, 2013).
<!--ID: 1720912238058-->
END%%
%%ANKI
Cloze
{Epistemology} is the {philosophical study of knowledge}.
Reference: Nikk Effingham, _An Introduction to Ontology_ (Cambridge: Polity Press, 2013).
<!--ID: 1720912238062-->
END%%
%%ANKI
Cloze
{Taxonomy} is the {branch of science concerned with categorization}.
Reference: Nikk Effingham, _An Introduction to Ontology_ (Cambridge: Polity Press, 2013).
<!--ID: 1720912238066-->
END%%
%%ANKI
Cloze
{Mereology} is the {philosophical study of part-whole relationships}.
Reference: Nikk Effingham, _An Introduction to Ontology_ (Cambridge: Polity Press, 2013).
<!--ID: 1720998380912-->
END%%
%%ANKI
Basic
What does Effingham mean when saying "concreta" and "abstracta" are terms of art?
Back: They are terms defined freely by a person to mean whatever one wants.
Reference: Nikk Effingham, _An Introduction to Ontology_ (Cambridge: Polity Press, 2013).
<!--ID: 1720894782942-->
END%%
%%ANKI
Cloze
In general, ontologists often categorize things as either {concreta} or {abstracta}.
Reference: Nikk Effingham, _An Introduction to Ontology_ (Cambridge: Polity Press, 2013).
<!--ID: 1720894782951-->
END%%
%%ANKI
Basic
Generally speaking, what does someone *probably* mean by "concrete" things?
Back: Things that exists in space and/or time.
Reference: Nikk Effingham, _An Introduction to Ontology_ (Cambridge: Polity Press, 2013).
<!--ID: 1720894782957-->
END%%
%%ANKI
Basic
Generally speaking, what does someone *probably* mean by "abstract" things?
Back: Things that exist in neither space nor time.
Reference: Nikk Effingham, _An Introduction to Ontology_ (Cambridge: Polity Press, 2013).
<!--ID: 1720894782965-->
END%%
%%ANKI
Basic
Is a material object considered concreta?
Back: Usually.
Reference: Nikk Effingham, _An Introduction to Ontology_ (Cambridge: Polity Press, 2013).
<!--ID: 1720894782971-->
END%%
%%ANKI
Basic
Is an immaterial object considered concreta?
Back: Possibly.
Reference: Nikk Effingham, _An Introduction to Ontology_ (Cambridge: Polity Press, 2013).
<!--ID: 1720894782978-->
END%%
%%ANKI
Basic
Is a material object considered abstracta?
Back: Not usually.
Reference: Nikk Effingham, _An Introduction to Ontology_ (Cambridge: Polity Press, 2013).
<!--ID: 1720894782984-->
END%%
%%ANKI
Basic
Is an immaterial object considered abstracta?
Back: Possibly.
Reference: Nikk Effingham, _An Introduction to Ontology_ (Cambridge: Polity Press, 2013).
<!--ID: 1720894782989-->
END%%
## Properties
A **property** is an entity that can be predicated of things or, in other words, attributed to them.
%%ANKI
@ -19,7 +129,7 @@ Reference: Francesco Orilia and Michele Paolini Paoletti, “Properties,” in _
<!--ID: 1720912237900-->
END%%
## Instantiation
### Instantiation
An entity is said to **instantiate** a property if said entity bears a connection to the property. For example, a human instantiates the property of *being human* and a man instantiates the properties of *being human* and *being a man*.
@ -98,3 +208,4 @@ END%%
* Francesco Orilia and Michele Paolini Paoletti, “Properties,” in _The Stanford Encyclopedia of Philosophy_, ed. Edward N. Zalta, Spring 2022 (Metaphysics Research Lab, Stanford University, 2022), [https://plato.stanford.edu/archives/spr2022/entries/properties/](https://plato.stanford.edu/archives/spr2022/entries/properties/).
* Nikk Effingham, _An Introduction to Ontology_ (Cambridge: Polity Press, 2013).
* Simon Hewitt, “A Cardinal Worry for Permissive Metaontology,” _Metaphysica_ 16, no. 2 (September 18, 2015): 159–65, [https://doi.org/10.1515/mp-2015-0009](https://doi.org/10.1515/mp-2015-0009).

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---
title: RDF
TARGET DECK: Obsidian::STEM
FILE TAGS: ontology::rdf
tags:
- ontology
- rdf
---
## Overview
The **Resource Description Framework** (RDF) is the foundational representation language of the Semantic Web. The basic building block of RDF is the **triple** containing a **subject**, **predicate**, and **object**. Global identifiers of resources are represented as [[uri|URIs]] (or, more generally, IRIs). These URIs can be expressed more compactly as [[uri#CURIEs|CURIEs]].
%%ANKI
Basic
What is RDF an acronym for?
Back: **R**esource **D**escription **F**ramework.
Reference: Allemang, Dean, James A. Hendler, and Fabien L. Gandon. _Semantic Web for the Working Ontologist_. 3e ed. ACM Books 33. New York: Association for computing machinery, 2020.
<!--ID: 1722187893324-->
END%%
%%ANKI
Basic
What is considered the basic representation language of the Semantic Web?
Back: RDF.
Reference: Allemang, Dean, James A. Hendler, and Fabien L. Gandon. _Semantic Web for the Working Ontologist_. 3e ed. ACM Books 33. New York: Association for computing machinery, 2020.
<!--ID: 1722187893326-->
END%%
%%ANKI
Cloze
With respect to RDF, a {resource} is {anything representable on the web}.
Reference: Allemang, Dean, James A. Hendler, and Fabien L. Gandon. _Semantic Web for the Working Ontologist_. 3e ed. ACM Books 33. New York: Association for computing machinery, 2020.
<!--ID: 1722187893328-->
END%%
%%ANKI
Basic
What aggregate concept is considered the basic building block of RDF?
Back: The triple.
Reference: Allemang, Dean, James A. Hendler, and Fabien L. Gandon. _Semantic Web for the Working Ontologist_. 3e ed. ACM Books 33. New York: Association for computing machinery, 2020.
<!--ID: 1722187893330-->
END%%
%%ANKI
Basic
What three components make up an RDF triple?
Back: The subject, predicate, and verb.
Reference: Allemang, Dean, James A. Hendler, and Fabien L. Gandon. _Semantic Web for the Working Ontologist_. 3e ed. ACM Books 33. New York: Association for computing machinery, 2020.
<!--ID: 1722187893332-->
END%%
%%ANKI
Cloze
In RDF, a triple is a ({subject}, {predicate}, {object}) tuple.
Reference: Allemang, Dean, James A. Hendler, and Fabien L. Gandon. _Semantic Web for the Working Ontologist_. 3e ed. ACM Books 33. New York: Association for computing machinery, 2020.
<!--ID: 1722187893333-->
END%%
%%ANKI
Cloze
A {subject} is to RDF as a recordt is to a relation.
Reference: Allemang, Dean, James A. Hendler, and Fabien L. Gandon. _Semantic Web for the Working Ontologist_. 3e ed. ACM Books 33. New York: Association for computing machinery, 2020.
<!--ID: 1722187893334-->
END%%
%%ANKI
Cloze
A {predicate} is to RDF as an attribute is to a relation.
Reference: Allemang, Dean, James A. Hendler, and Fabien L. Gandon. _Semantic Web for the Working Ontologist_. 3e ed. ACM Books 33. New York: Association for computing machinery, 2020.
<!--ID: 1722187893335-->
END%%
%%ANKI
Cloze
An {object} is to RDF as a value is to a relation.
Reference: Allemang, Dean, James A. Hendler, and Fabien L. Gandon. _Semantic Web for the Working Ontologist_. 3e ed. ACM Books 33. New York: Association for computing machinery, 2020.
<!--ID: 1722187893337-->
END%%
%%ANKI
Basic
Consider converting the following table to a triple. What is the subject?
![[triple-table-repr.png]]
Back: Row 2
Reference: Allemang, Dean, James A. Hendler, and Fabien L. Gandon. _Semantic Web for the Working Ontologist_. 3e ed. ACM Books 33. New York: Association for computing machinery, 2020.
<!--ID: 1722188525589-->
END%%
%%ANKI
Basic
Consider converting the following table to a triple. What is the object?
![[triple-table-repr.png]]
Back: Hamlet
Reference: Allemang, Dean, James A. Hendler, and Fabien L. Gandon. _Semantic Web for the Working Ontologist_. 3e ed. ACM Books 33. New York: Association for computing machinery, 2020.
<!--ID: 1722188525594-->
END%%
%%ANKI
Basic
Consider converting the following table to a triple. What is the predicate?
![[triple-table-repr.png]]
Back: Title
Reference: Allemang, Dean, James A. Hendler, and Fabien L. Gandon. _Semantic Web for the Working Ontologist_. 3e ed. ACM Books 33. New York: Association for computing machinery, 2020.
<!--ID: 1722188525598-->
END%%
%%ANKI
Basic
RDF identifiers are represented using what?
Back: URIs.
Reference: Allemang, Dean, James A. Hendler, and Fabien L. Gandon. _Semantic Web for the Working Ontologist_. 3e ed. ACM Books 33. New York: Association for computing machinery, 2020.
<!--ID: 1722191359882-->
END%%
## Bibliography
* Allemang, Dean, James A. Hendler, and Fabien L. Gandon. _Semantic Web for the Working Ontologist_. 3e ed. ACM Books 33. New York: Association for computing machinery, 2020.

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---
title: Uniform Resource Identifiers
TARGET DECK: Obsidian::STEM
FILE TAGS: uri
tags:
- rdf
- uri
---
## Overview
A **uniform resource identifier** (URI) is a unique sequence of characters for identifying some physical or abstract resource. URIs are further generalized to **internationalized resource identifier**s (IRIs) which allow using characters from any language, provided there exists a standard web encoding of the characters.
%%ANKI
Basic
What is URI an acronym for?
Back: **U**niform **r**esource **i**dentifier.
Reference: Allemang, Dean, James A. Hendler, and Fabien L. Gandon. _Semantic Web for the Working Ontologist_. 3e ed. ACM Books 33. New York: Association for computing machinery, 2020.
<!--ID: 1722191359864-->
END%%
%%ANKI
Basic
*Why* is a URI named the way it is?
Back: It is a globally unique identifier for some resource.
Reference: Allemang, Dean, James A. Hendler, and Fabien L. Gandon. _Semantic Web for the Working Ontologist_. 3e ed. ACM Books 33. New York: Association for computing machinery, 2020.
<!--ID: 1722191359866-->
END%%
%%ANKI
Basic
What is IRI an acronym for?
Back: **I**nternationalized **r**esource **i**dentifier.
Reference: Allemang, Dean, James A. Hendler, and Fabien L. Gandon. _Semantic Web for the Working Ontologist_. 3e ed. ACM Books 33. New York: Association for computing machinery, 2020.
<!--ID: 1722191359867-->
END%%
%%ANKI
Basic
In what way does an IRI generalize URIs?
Back: It allows any characters with standard web encodings to be used in the identifier.
Reference: Allemang, Dean, James A. Hendler, and Fabien L. Gandon. _Semantic Web for the Working Ontologist_. 3e ed. ACM Books 33. New York: Association for computing machinery, 2020.
<!--ID: 1722191359871-->
END%%
%%ANKI
Basic
Which of URIs or IRIs are more general?
Back: IRIs.
Reference: Allemang, Dean, James A. Hendler, and Fabien L. Gandon. _Semantic Web for the Working Ontologist_. 3e ed. ACM Books 33. New York: Association for computing machinery, 2020.
<!--ID: 1722191359873-->
END%%
### URLs
A **uniform resource locator** (URL) is a URI that specifies the means of finding the represented resource. The most commonly used schemes are `http` and `https`.
%%ANKI
Basic
What is URL an acronym for?
Back: **U**niform **r**esource **l**ocator.
Reference: Allemang, Dean, James A. Hendler, and Fabien L. Gandon. _Semantic Web for the Working Ontologist_. 3e ed. ACM Books 33. New York: Association for computing machinery, 2020.
<!--ID: 1722191359858-->
END%%
%%ANKI
Basic
*Why* is a URL named the way it is?
Back: Its structure specifies how to find the corresponding resource.
Reference: Allemang, Dean, James A. Hendler, and Fabien L. Gandon. _Semantic Web for the Working Ontologist_. 3e ed. ACM Books 33. New York: Association for computing machinery, 2020.
<!--ID: 1722191359861-->
END%%
%%ANKI
Basic
How do you find the resource represented by a URI?
Back: N/A. This isn't generally possible.
Reference: Allemang, Dean, James A. Hendler, and Fabien L. Gandon. _Semantic Web for the Working Ontologist_. 3e ed. ACM Books 33. New York: Association for computing machinery, 2020.
<!--ID: 1722191359863-->
END%%
%%ANKI
Basic
In what way does a URI generalize URLs?
Back: A URI does not necessarily specify how to find the represented resource.
Reference: Allemang, Dean, James A. Hendler, and Fabien L. Gandon. _Semantic Web for the Working Ontologist_. 3e ed. ACM Books 33. New York: Association for computing machinery, 2020.
<!--ID: 1722191359869-->
END%%
%%ANKI
Basic
Which of URIs or URLs are more general?
Back: URIs.
Reference: Allemang, Dean, James A. Hendler, and Fabien L. Gandon. _Semantic Web for the Working Ontologist_. 3e ed. ACM Books 33. New York: Association for computing machinery, 2020.
<!--ID: 1722191359872-->
END%%
%%ANKI
Basic
Which of IRIs or URLs are more general?
Back: IRIs.
Reference: Allemang, Dean, James A. Hendler, and Fabien L. Gandon. _Semantic Web for the Working Ontologist_. 3e ed. ACM Books 33. New York: Association for computing machinery, 2020.
<!--ID: 1722191359874-->
END%%
%%ANKI
Basic
What scheme are URLs required to use?
Back: N/A. There exist many possible schemes.
Reference: “Uniform Resource Locator.” In _Wikipedia_, June 20, 2024. [https://en.wikipedia.org/w/index.php?title=URL](https://en.wikipedia.org/w/index.php?title=URL&oldid=1230124093).
<!--ID: 1722193197739-->
END%%
%%ANKI
Basic
What are the two most commonly used URL schemes?
Back: `http` and `https`.
Reference: “Uniform Resource Locator.” In _Wikipedia_, June 20, 2024. [https://en.wikipedia.org/w/index.php?title=URL](https://en.wikipedia.org/w/index.php?title=URL&oldid=1230124093).
<!--ID: 1722193197746-->
END%%
### URNs
A **uniform resource name** (URN) is a URI that uses the `urn` scheme. It is intended to uniquely identify a resource, even when the resource no longer exists.
%%ANKI
Basic
What is URN an acronym for?
Back: **U**niform **r**esource **n**ame.
Reference: “Uniform Resource Identifier.” In _Wikipedia_, July 22, 2024. [https://en.wikipedia.org/w/index.php?title=Uniform_Resource_Identifier](https://en.wikipedia.org/w/index.php?title=Uniform_Resource_Identifier&oldid=1235957234).
<!--ID: 1722192211078-->
END%%
%%ANKI
Basic
*Why* is a URN named the way it is?
Back: It is used to uniquely identify some resource.
Reference: “Uniform Resource Identifier.” In _Wikipedia_, July 22, 2024. [https://en.wikipedia.org/w/index.php?title=Uniform_Resource_Identifier](https://en.wikipedia.org/w/index.php?title=Uniform_Resource_Identifier&oldid=1235957234).
<!--ID: 1722192211083-->
END%%
%%ANKI
Basic
Which of URLs or URNs are more general?
Back: N/A.
Reference: “Uniform Resource Identifier.” In _Wikipedia_, July 22, 2024. [https://en.wikipedia.org/w/index.php?title=Uniform_Resource_Identifier](https://en.wikipedia.org/w/index.php?title=Uniform_Resource_Identifier&oldid=1235957234).
<!--ID: 1722192211087-->
END%%
%%ANKI
Basic
Which of URNs or URIs are more general?
Back: URIs.
Reference: “Uniform Resource Identifier.” In _Wikipedia_, July 22, 2024. [https://en.wikipedia.org/w/index.php?title=Uniform_Resource_Identifier](https://en.wikipedia.org/w/index.php?title=Uniform_Resource_Identifier&oldid=1235957234).
<!--ID: 1722192211089-->
END%%
%%ANKI
Basic
*Why* aren't URLs a subset of URNs?
Back: What a URL represents may change over time.
Reference: “Uniform Resource Identifier.” In _Wikipedia_, July 22, 2024. [https://en.wikipedia.org/w/index.php?title=Uniform_Resource_Identifier](https://en.wikipedia.org/w/index.php?title=Uniform_Resource_Identifier&oldid=1235957234).
<!--ID: 1722192211091-->
END%%
%%ANKI
Basic
*Why* aren't URNs a subset of URLs?
Back: Their structure may not necessarily indicate how to find the resource.
Reference: “Uniform Resource Identifier.” In _Wikipedia_, July 22, 2024. [https://en.wikipedia.org/w/index.php?title=Uniform_Resource_Identifier](https://en.wikipedia.org/w/index.php?title=Uniform_Resource_Identifier&oldid=1235957234).
<!--ID: 1722192211093-->
END%%
%%ANKI
Basic
What scheme are URNs required to use?
Back: `urn`
Reference: “Uniform Resource Name.” In _Wikipedia_, April 26, 2024. [https://en.wikipedia.org/w/index.php?title=Uniform_Resource_Name](https://en.wikipedia.org/w/index.php?title=Uniform_Resource_Name&oldid=1220954593).
<!--ID: 1722193197751-->
END%%
## CURIEs
A **compact URI** (CURIE) is a denser representation of URIs. In its simplest form, it consists of a namespace and identifier separated by a colon. For example, `geo:England`.
%%ANKI
Basic
URIs in RDF are usually represented in what condensed format?
Back: CURIE.
Reference: Allemang, Dean, James A. Hendler, and Fabien L. Gandon. _Semantic Web for the Working Ontologist_. 3e ed. ACM Books 33. New York: Association for computing machinery, 2020.
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END%%
%%ANKI
Basic
What is CURIE an acronym for?
Back: **C**ompact **URI**&.
Reference: Allemang, Dean, James A. Hendler, and Fabien L. Gandon. _Semantic Web for the Working Ontologist_. 3e ed. ACM Books 33. New York: Association for computing machinery, 2020.
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END%%
%%ANKI
Basic
Consider CURIE `geo:England`. What is `geo` an example of?
Back: A namespace.
Reference: Allemang, Dean, James A. Hendler, and Fabien L. Gandon. _Semantic Web for the Working Ontologist_. 3e ed. ACM Books 33. New York: Association for computing machinery, 2020.
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END%%
%%ANKI
Basic
Consider CURIE `geo:England`. What is `England` an example of?
Back: An identifier.
Reference: Allemang, Dean, James A. Hendler, and Fabien L. Gandon. _Semantic Web for the Working Ontologist_. 3e ed. ACM Books 33. New York: Association for computing machinery, 2020.
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END%%
%%ANKI
Basic
In its simplest form, a CURIE is made up of what two parts?
Back: A namespace and an identifier.
Reference: Allemang, Dean, James A. Hendler, and Fabien L. Gandon. _Semantic Web for the Working Ontologist_. 3e ed. ACM Books 33. New York: Association for computing machinery, 2020.
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END%%
%%ANKI
Basic
The namespace and identifier of a CURIE is usually separated by what?
Back: A colon (`:`).
Reference: Allemang, Dean, James A. Hendler, and Fabien L. Gandon. _Semantic Web for the Working Ontologist_. 3e ed. ACM Books 33. New York: Association for computing machinery, 2020.
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END%%
## Bibliography
* Allemang, Dean, James A. Hendler, and Fabien L. Gandon. _Semantic Web for the Working Ontologist_. 3e ed. ACM Books 33. New York: Association for computing machinery, 2020.
* “Uniform Resource Identifier.” In _Wikipedia_, July 22, 2024. [https://en.wikipedia.org/w/index.php?title=Uniform_Resource_Identifier](https://en.wikipedia.org/w/index.php?title=Uniform_Resource_Identifier&oldid=1235957234).
* “Uniform Resource Locator.” In _Wikipedia_, June 20, 2024. [https://en.wikipedia.org/w/index.php?title=URL](https://en.wikipedia.org/w/index.php?title=URL&oldid=1230124093).
* “Uniform Resource Name.” In _Wikipedia_, April 26, 2024. [https://en.wikipedia.org/w/index.php?title=Uniform_Resource_Name](https://en.wikipedia.org/w/index.php?title=Uniform_Resource_Name&oldid=1220954593).