W3C home > Mailing lists > Public > public-sdw-wg@w3.org > March 2017

About MinCardinality 0 on Observation

From: Maxime Lefrançois <maxime.lefrancois@emse.fr>
Date: Mon, 27 Mar 2017 07:24:54 +0000
Message-ID: <CALsPASVDzRJxkQf3DKTfnPaDfbwASw4Zz1+aFqF3c7f_HS5A6g@mail.gmail.com>
To: SDW WG Public List <public-sdw-wg@w3.org>
Dear all,

Some of the local restrictions on sosa:Observation are:

ObjectMinCardinality( 0 ssn:observationResultTime )

ObjectMinCardinality( 0 ssn:observationSamplingTime )

ObjectMinCardinality( 0 ssn:qualityOfObservation )

If I understood correctly, those min cardinality 0 are meant to document
the fact that these properties "should" be attached to instances of
sosa:Observation. I will not debate on this and why we do not define
domains for these properties whose URIs even contain the string


1. when we will talk about sosa:resultTime, we should not forget to also
talk about this property ssn:observationResultTime.

2. what is the proposal for ssn:observationSamplingTime in ACTION-286?

3. there is ssn:qualityOfObservation. How is it used? Could we also define
a ssn:simpleQualityOfObservation  that is a datatype property?

Received on Monday, 27 March 2017 07:25:37 UTC

This archive was generated by hypermail 2.4.0 : Friday, 17 January 2020 17:17:05 UTC