W3C

– DRAFT –
Web-based Digital Twins for Smart Cities IG

28 April 2025

Attendees

Present
Kaz_Ashimura, Kunihiko_Toumura, Michael_Koster, Michael_McCool, Tomoaki_Mizushima
Regrets
-
Chair
Koster
Scribe
kaz

Meeting minutes

Logistics

Koster: we have a separate topic for schedule today
… any other specific topic?

Kaz: just to make sure, next call should be May 26

Koster: right
… (quickly shows the "schedule.md")
… any other items?

(none)

Minutes

Mar-24

Koster: (goes through the minutes)
… our monthly calls will be held on the 4th Monday of the month
… probably we should send out a reminder beforehand, preferably on Friday
… (continue to skim the minutes)
… any comments?

(none)

Koster: minutes approved

Review GitHub PRs

PRs

PR 1

PR 1 - Update technology-categories.md

McCool: fixed a typo
… regarding the 2nd point, we should say "Geospatial data" instead of "Geolocation"

Koster: yeah
… make sense
… spatial model for parking lot use case, etc.

(some discussion about "knowledge graphs")

Koster: we can just merge this for further discussion

Kaz: +1

Koster: (goes through "Time series and measurements")
… (also "Visualization")

Kaz: note that there is another resource around existing standards from external SDOs (=resources.md)
… and we should think about the relationship between this (=tchnology-categories.md) and that (=resources.md)
… also we should think about some specific use cases which refer back to these tech categories

Koster: exactly

Koster: (then "Analytics and automation")

(merged)

PR 2

PR 2 - Add ECHONET resources to resources.md

Koster: already identified resources. right?

Kaz: yes, presented by Mr. Matsuda from ECHONET several times

(merged)

PR 3

PR 3 - Add IEC SC3D resources to resources.md

Koster: typo around the section title...
… (fixed it)

(merged)

PR 4

PR 4 - Add resources on IPA DADC to resources.md

Kaz: they're working on smart building
… and now launching a new consortium
… but their Web pages are not yet available
… so would add a bit old resources in Japanese as a starting point

Koster: that's fine

PR 5

PR 5 - Add resources on ISO/IEC JTC1 WG11

(merged)

Kaz: note that we've started liaison with SC41 also
… would ask Torbjorn about their resources too

Koster: ah, yes

PR 6

PR 6 - Add ITU-T SG20 resources to resources.md

Kaz: note that they have many documents :)

Koster: right
… they also provide specifications around "Web of Things"

Kaz: probably from their viewpoint

(merged)

McCool: would have another entry for ETSI/FIWARE around NGSI-LD

Kaz: yeah

PR 7

PR 7 - Add OGC resources to resources.md

Kaz: they provide various specifications for various technology categories
… some are strongly related to McCool's proposed tech categories

Koster: right

(merged)

NGSI-LD

resources.md

Kaz: maybe we can merge "ETSI" and "FIWARE" for NGSI-LD

Koster: who generates the NGSI-LD standard itself?

Kaz: that's ETSI

Koster: ok. in that case, would add a link for NGSI-LD to ETSI section.

McCool: think we can add a link to the NGSI-LD liaison from the WoT side

<McCool> GitHub repository on NGSI-LD liaison: w3c/wot-ngsi-ld

<McCool> more specifically, resouces on NGSI-LD: https://github.com/w3c/wot-ngsi-ld/blob/main/resources.md

McCool: the above link of "WoT/NGSI-LD Liaison" to be applied instead of copying all the identical links

Koster: (adds a link for that)

resouces.md - ETSI section

Koster: any issues with the resources.md at the moment?

(none)

Monthly calls

Kaz: would start to invite key stakeholders from related SDOs
… e.g., JTC1, IEC, ITU-T, ...

Kaz: as you know, the IEC ontology workshop has been postponed till November
… so I'd suggest we invite the speakers from their workshop to our monthly calls
… and we participate in their workshop in November
… then we invite them again to our TPAC meeting

Koster: sounds great!

Schedule

schedule.md

Koster: (goes through the basic schedule)

Kaz: invite stakeholders to our monthly calls

Koster: then TPAC in November
… December meeting will be cancelled

Kaz: note that after my generating this basic schedule, I've started to feel that we should concentrate on our basic survey on existing standards collaboratively with relates SDOs
… then for the next Charter period we should work on concrete use case discussion

Koster: makes sense
… any other comments here?

(none)

AOB?

Koster: any other business for today?

(none)

[adjourned]

Minutes manually created (not a transcript), formatted by scribe.perl version 244 (Thu Feb 27 01:23:09 2025 UTC).