Period Type

• CURIE: gmeow:PeriodType
• IRI: https://blackcatinformatics.ca/gmeow/PeriodType
• Category: class
• Defined by: gmeow:slices/temporal
• Box roles: TBox role (What is this?)

The kind of a named period (geologic eon, era, period, epoch, age; historical dynasty, era; fiscal year). A value, never a subclass.

Structure

Subclass of: gufo:QualityValue

Practical Pattern

Use gmeow:PeriodType as a specialized kind of gufo:QualityValue. Add statement metadata or a standpoint when the assertion needs provenance, confidence, or vantage.

Usage Advice

Use when

• Use as the value vocabulary for classifying a gmeow:NamedPeriod by its defining domain — geologic rank, historical kind, fiscal kind — referenced through gmeow:periodType.

Avoid when

• Avoid modelling a period kind as a subclass of gmeow:NamedPeriod (kinds are individuals) and avoid using it for the period's bounds; the type names the category, not the extent.

How to use

• Reference a seeded gmeow:PeriodType individual from a period via gmeow:periodType; align it to an external authority (ICS geologic ranks) with skos:exactMatch in the mapping DSL, and mint new individuals rather than subclasses.

Examples

• ex:myType a gmeow:PeriodType; rdfs:label "artistic movement"@en.