Class: TIME-INTERVAL

An interval is a period of time elapsed between the start of an event and end of an event.The start of an event is precedes the end of an event. (Ref. J.F.Allen (1983), Maintaining knowledge about temporal intervals).

•owl:Thing
        •PHILOSURFICAL-ENTITY
                •CRM-ENTITY
                        •TIME-SPECIFICATION
                                •TIME-INTERVAL

Super Classes

TIME-SPECIFICATION
HAS-UNIT-OF-MEASURE ONLY MEASUREMENT-UNIT
HAS-END-TIME ONLY TIME-POINT
HAS-START-TIME ONLY TIME-POINT

Abstract Syntax

Class(TIME-INTERVAL partial TIME-SPECIFICATION
                           restriction(HAS-UNIT-OF-MEASURE allValuesFrom(MEASUREMENT-UNIT))
                           restriction(HAS-END-TIME allValuesFrom(TIME-POINT))
                           restriction(HAS-START-TIME allValuesFrom(TIME-POINT)))

Usage

Class Description/Definition (Necessary Conditions)

DAY, MONTH, TIME-RANGE, WEEK, YEAR

Domain of

HAS-END-TIME, HAS-START-TIME
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