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[wot-ig/wg] minutes - 21 February 2018

From: Kazuyuki Ashimura <ashimura@w3.org>
Date: Thu, 22 Feb 2018 12:54:28 +0900
Message-ID: <CAJ8iq9VpMLrNHTzYhT_XW9nF5_YK9yQ_2_ZqVKivZSqbC14W8A@mail.gmail.com>
To: Public Web of Things IG <public-wot-ig@w3.org>, public-wot-wg@w3.org
available at:

also as text below.

Thanks a lot for taking these minutes, Michael Koster!

I'll add the link to Lindsay's slides once I've got them.




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

                               - DRAFT -

                               WoT IG/WG

21 Feb 2018


      [2] https://www.w3.org/WoT/IG/wiki/Main_WoT_WebConf#Agenda


          Kaz_Ashimura, Jose_Manuel_Cantera (invited guest from
          ETSI), Lindsay_Frost (invited guest from ETSI),
          Michael_Koster, Michael_McCool, Zoltan_Kis,
          GraemeColeman, Ben_Francis, Graeme_Coleman,
          Soumya_Kanti_Datta, Taki_Kamiya, Toru_Kawaguchi,
          Daniel_Peintner, Kunihiko_Toumura, Tomoaki_Mizushima,
          Kazuaki_Nimura, Takeshi_Sano, Federico_Sismondi

          Kajimoto, Yongjing, Matthias


          mjkoster, kaz


     * [3]Topics
         1. [4]F2F
         2. [5]Form vocabulary for Binding
         3. [6]ETSI overview
         4. [7]TF reports
         5. [8]ETSI
     * [9]Summary of Action Items
     * [10]Summary of Resolutions


   <inserted> scribenick: mjkoster

   mccool: we have a venue
   ... please register if you haven't yet
   ... book using email and use the included discount code

   <kaz> [11]f2f wiki

     [11] https://www.w3.org/WoT/IG/wiki/F2F_meeting,_24-29_March_2018,_Prague,_Czech_Republic

   mccool: it's about a 15 minute walk to the OCF venue

   <kaz> [12]registration results so far

     [12] https://www.w3.org/2002/09/wbs/1/WoTF2F201803/results

   kaz: we have 25 registrants so far

   mccool: siemens will cover the cost; there is no registration
   ... there are no reserved hotel rooms

Form vocabulary for Binding

   <kaz> scribenick: kaz


     [13] https://github.com/w3c/wot-binding-templates/issues/29

   koster: revisiting the 'form' vocabulary
   ... discussion/comments on ML
   ... a few things to make binding clear
   ... (goes through the comments by Matthias)

   [14]Matthias's comment

     [14] https://github.com/w3c/wot-binding-templates/issues/29#issue-297583707

   koster: href takes the target URI. Usually it is used for
   (hyper-)references. In HTML, the target resource of a form goes
   into the action attribute.
   ... mediaType takes the media type for the serialization. It
   assumes the same media type for requests and responses. In
   HTML, the field for the request payload media type is enctype
   (with a small enum for values).
   ... we've been talking about HTTP and CoAP so far
   ... with MQTT we can do something different
   ... rel semantically identifies the form. This is not supported
   in the human-centric HTML forms. The closest match would be
   ... proposals on form vocabulary
   ... one structural change
   ... binding doesn't really have to be serialized with the rest
   of TD
   ... that is optional
   ... bigger discussion on what the use case is

   mccool: general comment
   ... closing changes
   ... we need to get a frozen version for plugfest
   ... another editor's call next week to wrap up the final

   koster: today was the original target day for freezing

   mccool: is this critical enough?
   ... after plugfest or before

   koster: we should make decision for the plugfest version
   ... protocol part of TD to be automatically processed

   mccool: please come to the TD meeting on Friday if you're

   <benfrancis> Just for the record, as discussed in
   [15]https://github.com/w3c/wot-thing-description/issues/88, I
   think these "forms" or "bindings" should just be "links". Link
   relations can have an href, mediaType and rel. Method shouldn't
   be necessary if scope is restricted to web protocols.

     [15] https://github.com/w3c/wot-thing-description/issues/88,

ETSI overview

   <inserted> scribenick: mjkoster

   mccool: defer until later

TF reports

- TD:


     [16] https://github.com/w3c/wot-thing-description/issues/94

   TD report: issue 94 was discussed, adding top level "link" term

   taki: still need to decide how it works in scripting
   ... dataSchema now uses "schema", inputSchema", "outputSchema"
   ... next serialization call will be March 5
   ... this Friday will attempt to decide the Plugfest version

- ScriptingAPI:

   <kaz> [17]https://github.com/w3c/wot-scripting-api/issues/95

     [17] https://github.com/w3c/wot-scripting-api/issues/95

   zoltan: discussing how to present TD metadata like security
   ... mostly, the runtime should handle it without needing to
   handle in the script

   zoltan: also discussing the API for "link"
   ... implementing terminology change on dataSchema

   mccool: will the vocabulary changes affect the scripting API?

   zoltan: yes, but we will wait until Friday and submit updates
   on Monday

- Binding Templates:

   <inserted> scribenick: kaz

   koster: another hour for update

   mccool: we're concentrating on HTTP and CoAP?

   koster: MQTT also

   mccool: so three protocols

   koster: notification for observables as well

- Security:

   <scribe> scribenick: mjkoster

   mccool: security TF

   zoltan: Security TF cancelled the last meeting

   mccool: presented the paper at NDSS and took some feedback,
   will update the paper and publish in a few weeks

   <McCool> [18]https://github.com/mmccool/ndss-wot-sec

     [18] https://github.com/mmccool/ndss-wot-sec


   lindsay presenting (slides tbd)

   lindsay: I'm Lindsay Frost, chairing Context Information
   Management group
   ... also working CENELEC collaboration around Smart City
   ... also have Jose Cantera on the call
   ... working on the API that we are going to review today
   ... presenting a graph about exchanging data and definitions
   ... want to embed the metadata in the messaging
   ... addressing the question of data provenance
   ... also tracking data usage
   ... creating an API for sharing the data with embedded metadata
   ... have already decided to use JSON-LD
   ... Security and Privacy are being built in, ask about GDPR
   ... Linked data compatibility with query and notification APIs
   ... it is a graph based system using IRIs to represent entities
   and properties for relations (i.e. linked data)
   ... are working on the issue of ontology proliferation, any
   ideas on how to manage?
   ... the API is constrained to not be too recursive and stay
   within a graph level
   ... will have a document ready for public comment this week
   ... defining a meta model and cross-domain ontology
   ... NGSI-LD as used in Fi-Ware
   ... asking for input from W3C and Web of Things
   ... describing CIM information model able to include many
   ontologies and show relations of higher level properties
   ... focused particularly on Smart City topics, e.g. energy,
   buildings, IoT...
   ... traffic management
   ... many ontologies leads to a Babel problem
   ... EU is expecting agreement on a common geospatial domain

   mccool: what is the ask from W3C WoT?

   lindsay: what are the details of how JSON-LD is being used with
   a focus on interoperability
   ... also can we share waus of doing things to make this work
   available to W3C communities
   ... feedback on our approach and implementation, choices of
   ... is the recursive model sensible?
   ... feedback on the protocol, any changes needed/

   kaz: thank you, will you be in Prague?

   Jose: Jose will be in Prague and can have the discussion

   lindsay: are making a lot of agreements and compromises and
   been through a lot of difficult discussion already
   ... working with other organizations

   mccool: can your system be described as a "thing"?
   ... can we identify how to integrate into the WoT Plugfest
   ... is there a working system with a web API we can experiment
   ... coordinate participation and define some concrete
   ... planning to attend open day as they are not members yet

   lindsay: will send the document to us

   <Zakim> kaz, you wanted to ask if the presentation slides can
   be distributed on the minutes

   kaz: can we get the slides from this presentation?

   lindsay: yes, will send a link to put in the minutes

   scribenick: kaz

   lindsay: comments on ontologies would be appreciated

   koster: we should coordinate with each other
   ... conceptual categories, etc.
   ... number of fruitful areas

   lindsay: great

   scribenick: mjkoster

   coordinate around external semantics, out LD task force, etc

   scribenick: kaz

   mccool: if you have any additional item for the next meeting,
   please add them to the agenda wiki
   ... aob?



Summary of Action Items

Summary of Resolutions

   [End of minutes]

    Minutes formatted by David Booth's [19]scribe.perl version
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Received on Thursday, 22 February 2018 03:55:37 UTC

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