GraphStructure

A Documentation of the structure behind the Graph.

Graph Structure

Basic Item

A basic item describes a learning content. It uses subclass of to link to a defined Cateogory, that is used to group topics. Items are linked between each other with depends on to define an item that defines some previous knowledge, or related to to link to a similar item. Additionally they link to resources with resource.

A short overview of possible links:

Item	— subclass of →	Category
Item	— depends on →	Prerequisite
Item	— related to →	Equivalent
Item	— resource →	Resource
Item	— instanc of →	Application

Additionally an item can be closer defined by linking an importance-item using importance. This can be done as simple link or as an added value to a property.

• Mandatory
• Essential
• Recommended
• Optional

Resources

A Resource is an item that is defined by the Properties url to link to an external site and instance of a structure-item, as seen below.

A short overview:

Resource	— url →	URL
Resource	— instance of →	Structure-Item

See: Item:Q280 as an example and Resource to reference a dummy element

Category

A general category, such as "Mathematical Foundations"; used to group topics.

A short overview:

Category-Item

— instance of →

Category

A Course can include

Course

A course encompasses a collection of learning contents. To declare an item as a Course use instance of.

A short overview:

Course-Item	— instance of →	Course
Course-Item	— taught by →	Educator
Course-Item	— includes →	Session

See: Item:Q170 as an example. A course can include a Session, as seen below:

Session

A Session acts as a possibility to group several items that will be discussed during an actual course session.

See: Item:Q248 as an example.

A short overview:

Session-Item	— instance of →	Session
Session-Item	— includes →	Item
Course-Item	— on date →	Date

People

Student

The role of a student is declared by linking from an item to Student using instance of. The student then can link their item to others using interested in and has completed to organize their interests and progress.

A short overview:

Student-Item	— instance of →	Student
Student-Item	— interested in →	Item
Student-Item	— has completed →	Item
Student-Item	— participates in →	Course, Session

See: Item:Q315 as an example.

NOTE: Query currently only shows one property label, the other would be "has completed".

Educator

The role of an educator is declared by linking from an item to Educator using instance of.

---

Properties

List of Properties

Important Properties:

Property	Name	Used for	Links to →
Property:P1	depends on	Prerequisites	Learning contents
Property:P2	subclass of	Grouping items into Topics	Categories
Property:P3	instance of	Abstract Classes	Category
Property:P4	related to	Equivalents	Learning contents
Property:P14	includes	Making a list of items	Learning Contents, Sessions
Property:P21	resource	Link to a resource	Resources
Property:P20	url	save a URL	URL
Property:P11	image	declare images for items	Image
Property:P12	has completed	Completion	Learning Contents, (Sessions, Courses)
Property:P23	interested in	Declare interests	Learning contents
Property:P25	participates in	Participation	Courses, Sessions
Property:P13	importance	Declaring importance	Learning contents
Property:P16	created by	Author	Person
Property:P17	modified by	Author	Person
Property:P22	certified by	Author	Educator
Property:P24	taught by	Author	Educator
Property:P19	on date	Timeliness	Date
Property:P15	comment	Note something	String
Property:P26	language	Declare the language	Items

Useful Pages

• DebugQueries
• Query Service