Managing Time - is our time modeling enough and how it impact with SPARQL filters

[riccardoAlbertoni]

The following CQ deals with time to some extent

• CQ4
• CQ 6
• CQ 7
• CQ 17
• CQ 25

Is the time modeling good enough to deal with

• Date with Centuries or period names, how can we deal with them?

Other possible further CQs such as

• "Give me all the objects made between 1941 and 1945". [ This should return objects with both day and year granular time. ]
• "Give me all the objects made between 1941-03-12 and 1945-03-12" [ should an object dated 1941 be returned? ]

The operators "< " and " >" in SPARQL are not robust enough to filter objects whose dates are specified heterogeneously xsd: year and xsd:date.

Reconsider the Time ontology to determine how to balance complexity in dealing with the issue above.

[TizianaPasciuto]

• Date with Centuries or period names, how can we deal with them?

Currently, the query has been modified so that it points to the start date and end date of the period, overriding the century written as a string (for example, see CQ7).