[WoT+NGSI-LD] minutes - 3 February 2025

available at:
  https://www.w3.org/2025/02/03-wot-ngsi-ld-minutes.html


also as text below.

Thanks a lot for taking notes, Martin!
 
Please note that the meeting on Feb 10 will be cancelled and
the next meeting will be held on Feb 17.

Kazuyuki

---
   [1]W3C

      [1] https://www.w3.org/


                             – DRAFT –
                            WoT and NGSI-LD

03 February 2025

   [2]Agenda. [3]IRC log.

      [2] https://www.w3.org/WoT/IG/wiki/WoT-NGSI-LD#February_3,_2025

      [3] https://www.w3.org/2025/02/03-wot-ngsi-ld-irc


Attendees

   Present
          Franck_LE_GALL, Kaz_Ashimura, Martin_Bauer,
          Michael_Koster, Michael_McCool

   Regrets
          -

   Chair
          McCool

   Scribe
          kaz, Martin

Contents

    1. [4]Logistics
    2. [5]Minutes
    3. [6]Resources
         1. [7]Martin's slides
         2. [8]Other resources
    4. [9]Review concept document
         1. [10]W3C WoT Concepts
         2. [11]NGSI-LD Information Model (Property Graph)
         3. [12]NGSI-LD API
         4. [13]Comparison
    5. [14]Next meeting
    6. [15]AOB

Meeting minutes

  Logistics

   Martin: have updated a document to the "resources" area of the
   GitHub

   [16]Martin's slides

     [16] https://github.com/w3c/wot-ngsi-ld/blob/main/resources/W3C WoT and NGSI-LD Concepts.pptx

  Minutes

   <kaz> [17]Jan-20

     [17] https://www.w3.org/2025/01/20-wot-ngsi-ld-minutes.html


   McCool: I have sent some small issues to kaz, which still need
   to be fixed

   McCool: we need to clarify whether we mean the same thing when
   talking about north-bound vs. digital twin modelling

   McCool: it should be north/sound bound (not "bond")

   McCool: maybe replace "moattainai" with "a waste"

   McCool: Minutes are aproved

   <kaz> (typos have been fixed, btw)

  Resources

   <kaz> [18]resource.md page on the wot-ngsi-ld repo

     [18] https://github.com/w3c/wot-ngsi-ld/blob/main/resources.md


    Martin's slides

   <kaz> [19]Martin's slides

     [19] https://github.com/w3c/wot-ngsi-ld/blob/main/resources/W3C WoT and NGSI-LD Concepts.pptx

   McCool: make PR, even if you merge

    Other resources

   McCool: Should we add any more resources to the list?

   Martin: We might want to also add the WoT
   specifcations/documents

   <McCool> [20]https://github.com/w3c/wot-ngsi-ld/issues/4


     [20] https://github.com/w3c/wot-ngsi-ld/issues/4


   McCool: I created an issue to add links to WoT Resources

  Review concept document

   <kaz> [21]Martin's Concepts document

     [21] https://github.com/w3c/wot-ngsi-ld/blob/main/resources/W3C WoT and NGSI-LD Concepts.pptx

   Slideset: [22]https://github.com/w3c/wot-ngsi-ld/blob/main/

   resources/W3C-WoT-and-NGSI-LD-Concepts.pdf

     [22] https://github.com/w3c/wot-ngsi-ld/blob/main/resources/W3C-WoT-and-NGSI-LD-Concepts.pdf


   McCool: I would like to create a summary, maybe create an issue
   while we are going through the document and put it elsewhere
   later

   McCool: (summarizes the concepts on the GitHub Issue)

   [23]issue 5 - Summarize Concept Presentation from Martin Bauer

     [23] https://github.com/w3c/wot-ngsi-ld/issues/5

    W3C WoT Concepts

   [24][Slide 2]

     [24] https://github.com/w3c/wot-ngsi-ld/blob/main/resources/W3C-WoT-and-NGSI-LD-Concepts.pdf#page=2


   Martin: (explains the slide of "W3C WoT Concetps" including the
   expectations for the Thing Model

   McCool: Thing Model is rather a template for generating Thing
   Descriptions

   Kaz: right
   … so I think this slides shows "ETSI's expectations for the WoT
   mechanism"
   … and that's still useful
   … maybe we can change the title of this slide from "W3C WoT
   Concepts" to "Expectations for WoT Mechanism"

   McCool: note that Thing Model (currently) doesn't have behavior
   information
   … also WoT is focusing on the Thing Descriptions and the Thing
   Models are relatively new

    NGSI-LD Information Model (Property Graph)

   [25][Slide 3]

     [25] https://github.com/w3c/wot-ngsi-ld/blob/main/resources/W3C-WoT-and-NGSI-LD-Concepts.pdf#page=3


   Martin: we have our own entities representing physical or
   virtual assets

   McCool: "entity" is the core concept of NGSI-LD
   … instanciate actual information based on that?

   Martin: data model is out of scoep of ETSI ISG CIM
   … Entity has Properties and Relationships (=relationship to
   other entity)

   McCool: WoT do the data model
   … but focusing on network presence

    NGSI-LD API

   [26][Slide 4]

     [26] https://github.com/w3c/wot-ngsi-ld/blob/main/resources/W3C-WoT-and-NGSI-LD-Concepts.pdf#page=4


   Martin: APIs for retrieve entity, query entities, subscribe to
   entities, create/update/delete entity
   … and actuation

   McCool: interesting
   … currently, WoT Discovery is just for the Thing Description

    Comparison

   [27][Slide 5]

     [27] https://github.com/w3c/wot-ngsi-ld/blob/main/resources/W3C-WoT-and-NGSI-LD-Concepts.pdf#page=5


   (Comparison between NGIS-LD Entity and WoT Thing)

   McCool: you're right. WoT Thing Description is about a single
   instance
   … let's look at WoT Discovery next time
   … it does have various problems
   … but I can talk about that next time

   <McCool> [28]https://github.com/w3c/wot-ngsi-ld/issues/5


     [28] https://github.com/w3c/wot-ngsi-ld/issues/5


   [29]issue 5 - Summarize Concept Presentation from Martin Bauer

     [29] https://github.com/w3c/wot-ngsi-ld/issues/5


   McCool: (then add "review WoT Discovery" to the TODO list for
   the next time)

  Next meeting

   Martin: when to have the next meeting?
   … not available next week

   McCool: in that case, I'm OK to make the call bi-weekly

   Franck: better to keep it the meeting itself weekly, though we
   need to cancel the call next week

   McCool: ok

  AOB

   Kaz: just generated PDF based on Martin's Powerpoint
   … OK to upload it to the GH repo so that we can refer to the
   slides from the minutes?

   McCool: yes, please do

   (Kaz has uploaded the PDF via PR 6 and then merged the PR)

   [30]https://github.com/w3c/wot-ngsi-ld/blob/main/resources/

   W3C-WoT-and-NGSI-LD-Concepts.pdf

     [30] https://github.com/w3c/wot-ngsi-ld/blob/main/resources/W3C-WoT-and-NGSI-LD-Concepts.pdf


   [adjourned]


    Minutes manually created (not a transcript), formatted by
    [31]scribe.perl version 196 (Thu Oct 27 17:06:44 2022 UTC).

     [31] https://w3c.github.io/scribe2/scribedoc.html

Received on Tuesday, 4 February 2025 17:12:47 UTC