- From: Kazuyuki Ashimura <ashimura@w3.org>
- Date: Wed, 01 Oct 2025 01:15:55 +0900
- To: public-smart-cities@w3.org
- Cc: group-wot-ngsi-ld@w3.org, bert@w3.org
On Wed, 01 Oct 2025 01:11:13 +0900, Kazuyuki Ashimura wrote: > > Hi all, > > Regarding the next Smart Cities IG (SCIG) call, I've talked with > Michael Koster as the IG Chair again, and we think it would be nicer > to have the next SCIG meeting during TPAC 2025 in Kobe instead of the > next possible October call. > > As you know, we usually hold the SCIG call on the 4th Monday or the > 2nd Monday of the month depending on people's availability. On the > other hand, TPAC 2025 [a] will be held in November 10-14. So we'd like > to hold the SCIG meeting as a TPAC breakout session [b] on Wednesday, > November 12. > > As the TPAC Breakout time slot page [c] shows, there are six slots for > breakouts on November 12, and we'd like to identify which slot would > be the best for all the group participants. > > So could you please respond to the Doodle poll: > https://doodle.com/group-poll/participate/axjjEAzd > and show your availability/preference. Please note that there is an overlap with the WoT-WG's Live Demo session: https://github.com/w3c/tpac2025-breakouts/issues/7 with the last session (=17:30-18:30), so we didn't include that slot as our candidates. Thanks, Kazuyuki > [a] https://www.w3.org/2025/11/TPAC/ > [b] https://github.com/w3c/tpac2025-breakouts > [c] https://github.com/w3c/tpac2025-breakouts/wiki/Breakout%E2%80%90time%E2%80%90slots > > Thanks, > > Kazuyuki > > > On Tue, 09 Sep 2025 00:50:46 +0900, > Kazuyuki Ashimura wrote: > > > > available at: > > https://www.w3.org/2025/09/08-smart-cities-minutes.html > > > > also as text below. > > > > As mentioned during the call, I'll organize another Doodle poll to > > identify a good slot for the next call in October. > > > > Note that we agreed to have a hybrid F2F meeting during TPAC 2025 as > > a TPAC breakout session. So I'll organize a Doodle poll to see which > > day from TPAC would fit people also. > > > > Thanks, > > > > Kazuyuki > > > > --- > > [1]W3C > > > > [1] https://www.w3.org/ > > > > – DRAFT – > > Web-based Digital Twins for Smart Cities IG > > > > 08 September 2025 > > > > [2]Agenda. [3]IRC log. > > > > [2] https://github.com/w3c/smart-cities/blob/main/README.md#8-sep-2025 > > [3] https://www.w3.org/2025/09/08-smart-cities-irc > > > > Attendees > > > > Present > > Juanjo_Hierro, Kaz_Ashimura, Martin_Bauer, > > Michael_Koster, Tomoaki_Mizushima, Torbjorn_Lahrin > > > > Regrets > > - > > > > Chair > > Koster > > > > Scribe > > kaz > > > > Contents > > > > 1. [4]Logistics > > 1. [5]Guests and IEs > > 2. [6]Quick Intro > > 3. [7]Minutes > > 4. [8]F2F Meeting at TPAC 2025 > > 5. [9]NGSI-LD Collaboration > > 1. [10]About FIWARE > > 2. [11]Digital Twins as basis for the architecture... > > 3. [12]Digital Twins: an approach for integration at > > multiple levels... > > 4. [13]What are we referring to as Digital Twins > > 5. [14]Data Exchange API: ETSI NGSI-LD > > 6. [15]FIWARE driving key standards: Smart Data Models > > 7. [16]Smart Vertical solution: Reference Architecture > > (Smart Cities) > > 8. [17]Example: Initial Smart City Reference Architecture > > 9. [18]WoT:Things and GSI-LD:Entities > > 10. [19]Compatibility of NGSI-LD with Thing > > Models/Descriptions > > 11. [20]Summary > > 6. [21]Next meeting > > > > Meeting minutes > > > > Logistics > > > > Guests and IEs > > > > Kaz: Torbjorn is now an official IE > > … also we have two guests from ETSI/FIWARE > > > > Koster: yes > > … discussion about NGSI-LD > > … also Torbjorn from the Nordic Smart Cities activity > > … welcome! > > > > Quick Intro > > > > (starting with Juanjo) > > > > Juanjo: FIWARE tech committee Chair > > > > Martin: principle standardization > > … vice Chair of FIWARE committee > > … NGSI-LD from the beginning > > > > Torbjorn: nice to have you both > > … in Sweden, we have Nordic Smart City project > > … using the platform based on FIWARE stuff > > … so welcome to see the technology > > … also smart city community within W3C > > … also engaged with European dataspace work > > … also Chair of strategic coordination for Metaverse > > > > Koster: a lot of activities around those topics > > … move things forward in more coordinated way would be nice > > > > Minutes > > > > [22]July-7 > > > > [22] https://www.w3.org/2025/07/07-smart-cities-minutes.html > > > > Koster: (goes through the previous minutes) > > … we're working on the technology landscape > > … adding more categories for the technology > > … also vocabulary is very important > > … pretty broad activities > > > > Torbjorn: Mark and I had discussion about ontologies for smart > > cities > > … Mark has been working on that, that's good > > … the problem is there are many of them > > … people have their own ontologies > > … if we can have some ontology for everybody, that would be > > great > > … we have 3-4 vendors in Sweden but all of them have their own > > ones > > … make one changes their own ontology > > … so there is a challenge about alignment and interoperability > > … sharing data within, e.g., European Dataspace > > … convergence is needed > > … happy to have discussion about the problem > > … would elaborate the challenges > > > > Juanjo: one of the advantages why FIWARE has become popular > > … across various cities > > … guess you're familiar with the models > > … smart data models, etc. > > … associated to that > > … what we have is really implemented approach > > … decided based on communities' requirements > > … company organization implementing and contributing to real > > projects > > … analysis and potential collisions > > … we have so far big number of cities working on that > > … and widely adopted > > … implementing FIWARE's datamodel > > … in many cities before FIWARE is around > > … there was a gap on how to integrate things > > … we handle that based on the idea of digital twins > > … fancy tools of 3D visualization itself is not important but > > the data model is important > > … structured layer to be used > > … context broker implements the mechanism > > … this arouse to overcome the issues with old systems > > … adaptation of the mechanism will accomplish the > > interoperability > > … between one data and another > > … what is important is the data > > … what data to be provided by the system > > … e.g., for a traffic management system > > … also what kind of data to be used to improve the system > > … all the data to be harmonized with each other > > … ID management in addition to NGSI-LD > > … would like to talk about the background around FIWARE today > > > > Kaz: great > > … actually, your presentation is the main topic for today > > … please let Koster wrap-up the minutes review quickly > > > > Koster: ok > > … (wrap-up the minutes review) > > … (quickly goes through the rest of the minutes from July-7 > > meeting) > > … Mark Fox gave nice description about his ontology work > > … any comments/questions? > > > > (none) > > > > (minutes approved) > > > > F2F Meeting at TPAC 2025 > > > > Koster: TPAC is the main tech meeting of W3C > > … we'd hold a F2F meeting as breakout during TPAC > > > > Torbjorn: when to have that? > > > > Kaz: probably on Wednesday, Nov 12 > > > > Torbjorn: hybrid? > > > > Kaz: yes > > … and we can decide on the date later :) > > > > Koster: sounds good > > > > NGSI-LD Collaboration > > > > @@@ slides tbd > > > > Kaz: do you think you can share your slides publicly? > > > > Juanjo: yes, after some changes > > > > Kaz: great > > > > About FIWARE > > > > Juanjo: (gives background about FIWARE) > > … IoT-enables smart solutions > > … also smart organizations > > … working on dataspaces for 12 years or so > > … invocation of services > > … FIWARE community intends to contribute to creation/evolution > > > > Digital Twins as basis for the architecture... > > > > Juanjo: digital twin representation for the real world > > … constantly keep up to date > > > > Digital Twins: an approach for integration at multiple levels... > > > > Juanjo: architecting, integration, ... > > > > What are we referring to as Digital Twins > > > > Juanjo: digital "replica of an asset > > … characterized by attributes > > … values of attributes may change over time > > … typically have a location > > … APIs about how to implement actions > > … also handling common data models > > … NGSIv2 => ETSI GSI-LD API > > > > Data Exchange API: ETSI NGSI-LD > > > > Juanjo: (Context Broker connected with bus, citizen, shop, ...) > > … not only for citizens but various industry domains > > … some of the targets are related to multiple domains > > … NGSI-LD is a simple powerful REST API > > … simple: what you want in a RESTful API > > … entity types, entities, attributes > > … GET, POST, PUT, PATCH, DELETE operations > > … powerful: supported operations > > … geo-queries, subscription/notification, pull/push, multiple > > data rendering, ... > > > > FIWARE driving key standards: Smart Data Models > > > > [23]Smart Data Models > > > > [23] https://github.com/smart-data-models > > > > Juanjo: collaborating with relevant orgs > > … how the map into JSON-LD also > > … data modes based on well-established standards, e.g., > > schema.org, SAREF, IEC CIM in Energy > > > > Smart Vertical solution: Reference Architecture (Smart Cities) > > > > Juanjo: multi-tier architecture > > … 4 major layers, data acquisition layer, > > processing/analysis/visualization > > … AI/ML algorithm to be also applied > > > > Example: Initial Smart City Reference Architecture > > > > (diagram) > > > > Juanjo: (describes the diagram) > > … there might be a system which doesn't require FIWARE standard > > … but the architecture including the Context Broker can work > > that as well > > … bring all the data to the common data layer > > … the data can be consumed by the other vertical solutions > > … these days considering VC/DID as well for identification > > management > > … ability to create market places also > > … establish the contract for various services > > > > WoT:Things and GSI-LD:Entities > > > > Juanjo: a WoT Thing may map well to an NGSI-LD Entity > > … (shows an example Thing Description about that idea) > > > > Compatibility of NGSI-LD with Thing Models/Descriptions > > > > Juanjo: WoT may specify what would be the default Thing > > Description derived from a Thing Model > > … then how to implement Actions for NGSI-LD should be clarified > > … (shows some more discussion points) > > > > Summary > > > > Juanjo: WoT and NGSI-LD look compatible > > … opportunity to specify how they can work together > > … but we need further clarification to see the details > > … we did some work about that including DTDL, etc. > > … we need standard way for digital twin representation as well > > … how to harmonize that layer is also a question > > … so collaboration with W3C has been established > > … 1:1 conversion with WoT Thing Description to be discussed > > … Property is comparably straightforward > > … that's the basic background of the collaboration > > > > Koster: that's really exciting! > > … sort of start-off for further discussion > > … JSON Schema as basic definition language, for example > > > > [24]Smart Cities IG Charter > > > > [24] https://www.w3.org/2024/06/smart-cities/ > > > > Kaz: completely inline with the Charter > > > > Torbjorn: also interested > > … a bit curious about how to support the declaration for > > Citiverse, etc. > > … what possibility do you see? > > > > Juanjo: depends on what we find > > … we already have experience on integrating different > > technologies with NGSI-LD > > … integrating more out-of-desk things > > … it's still something to be developed > > … so far our impression is very promising > > > > Torbjorn: ok > > … another question about the main branch for integration > > … we're referring to NGSI-LD also > > … on top of NGSI-LD > > > > Juanjo: this was something several years ago > > … reference implementation of each component > > … we're going for more inclusive approach > > … there are several different context brokers > > … there is no enforcement to force people make commitment to > > our repository, for example > > > > Torbjorn: bringing what we did back to the NGSI-LD repo? > > > > Juanjo: there is the FIWARE catalog but you don't have to take > > all of them > > > > Torbjorn: there is a sensitive branch when people make > > contributions > > … there are several vendors from Sweden, though > > … would be helpful if we could clarify how to organize FIWARE > > stuff and W3C stuff > > > > Kaz: that's really a good point > > … and should be included into the topics for this IG > > … for example, W3C Registry mechanism could be helpful for that > > purpose > > > > Koster: exactly, this is really good point > > … any other business for today? > > > > Next meeting > > > > Juanjo: when to have the next meeting? > > > > Kaz: usually hold on the 4th Monday > > … but will create a Doodle poll to fine a good slot for people > > > > Koster: ok > > … meeting adjourned > > > > [adjourned] > > > > > > Minutes manually created (not a transcript), formatted by > > [25]scribe.perl version 244 (Thu Feb 27 01:23:09 2025 UTC). > > > > [25] https://w3c.github.io/scribe2/scribedoc.html
Received on Tuesday, 30 September 2025 16:16:01 UTC