There is very interesting and relevant work done by a group of scholars about modeling time for recording historical events as structured data. Please have a look at http://dh.stanford.edu/topotime/ and http://perio.do/narrative/.

I am following the discussion related to the development of the http://www.openhistoricalmap.org/ at https://lists.openstreetmap.org/listinfo/historic. In my mind, it would be a good idea to keep in sync with and provide insight into the other open projects for historical data, in this case geodata. The question of standards is being discussed right now :)

Best,
Susanna

2014-12-30 19:45 GMT+02:00 Gerard Meijssen <gerard.meijssen@gmail.com>:
Hoi,
The Wikipedia article on the subject has probably most if not all relevant details.. 
Thanks,
      GerardM

On 30 December 2014 at 16:39, Gerard Meijssen <gerard.meijssen@gmail.com> wrote:
Hoi,
The most important people, as far as Wikidata is concerned, are the Wikidata developers. As long as they indicate that the software conforms to the standard we are good.

There is no problem in them having the standard and publishing what is expected of the use of timestamps and time diffs/
Thanks,
     GerardM

On 29 December 2014 at 18:00, Paul Houle <ontology2@gmail.com> wrote:
Gerard,  tell me about it.

It's hard to find anyone who has even seen "ISO 8601" so there is not general compatibility between tools that accept "ISO 8601 (date)?(times?)";  the xsd:datetime (defined mainly as a restriction of ISO 8601) is closer to an open standard,  but people aren't so sure about extra digits in the date fields,  but maybe we will need them to deal with the year 10000 problem.

IEEE 744 is a similar scandal since it hasn't been read by most developers,  particularly systems developers,  so it is unlikely that FP operations in your favorite language are completely conformant.

Now IEEE does have the Get802 program which lets you get slightly aged documents for networking standards and ISO does release the occasional standard for free such as ISO 20222 but there is a big difference between those two and the other organizations like the OMG,  W3C,  IETF,  and FIPS that publish standards for free and manage to somehow pay the bills.

On Mon, Dec 29, 2014 at 6:31 AM, Gerard Meijssen <gerard.meijssen@gmail.com> wrote:
Hoi.
The fact that ISO has its standards behind a paywall is its shame. However, it does not necessarily imply anything about the use of the standard.
Thanks,
     Gerard

NB a paywall seriously hampers acceptance of standards

On 29 December 2014 at 12:20, Jeff Thompson <jeff@thefirst.org> wrote:
The ISO standard for CIDOC CRM is behind a pay wall with a patent notice. Can it be used in an open knowledge system?


On 2014-12-29 9:49, Dov Winer wrote:
Hi Sam,

CIDOC/CRM is the ontology of choice for Structured History
as it is anchored on modelling events.

An excellent project based on it is the ResearchSpace from
the British Museum.
See:

Enjoy,
Dov


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