Modelling: Difference between revisions
No edit summary |
|||
| Line 14: | Line 14: | ||
See some [[Project:SPARQL/examples#Federated_queries|examples of federated queries]]. | See some [[Project:SPARQL/examples#Federated_queries|examples of federated queries]]. | ||
===Index terms=== | ===Index terms=== | ||
An {{Q|Q12}} is a keyword that we use to describe e.g. the topic of a document or the focus area of a project. | An {{Q|Q12}} is a keyword that we use to describe e.g. the topic of a document or the focus area of a project. | ||
For example: {{Q|Q18}}, {{Q|Q39}}, {{Q|Q17}}. | For example: {{Q|Q18}}, {{Q|Q39}}, {{Q|Q17}}. | ||
===Organizations=== | ===Organizations=== | ||
An {{Q|Q13}} could be a Wikimedia chapter, a GLAM or any other organized social entity. | An {{Q|Q13}} could be a Wikimedia chapter, a GLAM or any other organized social entity. | ||
For example: {{Q|Q50}}, {{Q|Q9}}, {{Q|Q15}}. | For example: {{Q|Q50}}, {{Q|Q9}}, {{Q|Q15}}. | ||
=== Humans === | |||
We only create items about people when these are needed to describe authorship/speaker/event or project responsibility. And only when this information is already publicly available, any affiliation would also need to have been publicly communicated. Since the main affiliation might not always apply, it can be superseded by a qualifier on an item-by-item basis. | |||
For example: {{Q|Q46}}, {{Q|Q30}}. | |||
==Item types primarily offloaded on Wikidata== | |||
For the following item types we expect little or no information on Metabase. Required are only {{P|P1}} and {{P|P5}} if they exist on Wikidata. | |||
* '''Organizations''' | |||
** If not on Wikidata, consider if it might anyway be relevant for Wikidata. Else add a Label and an additional {{P|P5}} statement to an [[Modelling/Index term|index term]] describing the type of organisation. | |||
* '''Locations''': It is enough to stay at a town level of granularity, e.g. {{Q|Q78}} rather than ''Norrsken House''. This is enough to get an insights about the geographical spread of activities. | |||
* '''Humans''' | |||
** If not on Wikidata see [[Modelling/Humans|humans]] for allowed modelling | |||
==Metabase-specific items== | ==Metabase-specific items== | ||
Revision as of 09:26, 3 May 2023
Page under which Object modelling descriptions will be hosted:
Metabase vs. Wikidata
As we do not aim to duplicate the information on Wikidata, there's a number of item types that only contain a Wikidata QID, using sameAs on Wikidata (P1). These are:
- activity (Q8)
- index term (Q12)
- organization (Q13)
- Wikimedia content project (Q22)
- human (Q23)
- event (Q40)
- location (Q66)
By using federated queries, we can still access information about these types of entities from Wikidata, without hosting the data ourselves.
See some examples of federated queries.
Index terms
An index term (Q12) is a keyword that we use to describe e.g. the topic of a document or the focus area of a project.
For example: museum collection (Q18), public art (Q39), authority control (Q17).
Organizations
An organization (Q13) could be a Wikimedia chapter, a GLAM or any other organized social entity.
For example: Wikimedia Foundation (Q50), Wikimedia Sverige (Q9), Nationalmuseum (Q15).
Humans
We only create items about people when these are needed to describe authorship/speaker/event or project responsibility. And only when this information is already publicly available, any affiliation would also need to have been publicly communicated. Since the main affiliation might not always apply, it can be superseded by a qualifier on an item-by-item basis.
For example: Alicia Fagerving (Q46), André Costa (Q30).
Item types primarily offloaded on Wikidata
For the following item types we expect little or no information on Metabase. Required are only sameAs on Wikidata (P1) and instance of (P5) if they exist on Wikidata.
- Organizations
- If not on Wikidata, consider if it might anyway be relevant for Wikidata. Else add a Label and an additional instance of (P5) statement to an index term describing the type of organisation.
- Locations: It is enough to stay at a town level of granularity, e.g. Stockholm (Q78) rather than Norrsken House. This is enough to get an insights about the geographical spread of activities.
- Humans
- If not on Wikidata see humans for allowed modelling
Metabase-specific items
Projects
A project could be:
- a formal one officially implemented by an organization (a Wikimedia chapter, a GLAM, or other)
- an informal one implemented by a self-organized group (such as participants in a Wikiproject), or an individual (a volunteer Wikimedian)
See the following:
- Modelling of projects in Metabase
- Generic project entity schema and Cradle
- Wikimedia Sverige project entity schema and Cradle
Documents
Activities and events