See also: IRC log
<trackbot> Date: 03 June 2015
<jhund> trackbot, start meeting
<trackbot> Meeting: Web of Things Interest Group Teleconference
<trackbot> Date: 03 June 2015
<jhund> Meeting: WoT IG thing description task force call
<jhund> scribe:Arne
<jhund> Scribe: Arne
<jhund> ScribeNick: Arne
1. Overview of WoT TD wiki page
http://www.w3.org/WoT/IG/wiki/Thing_Description
2. Agenda Point: JSON-LD
Souleiman unfortunately not available today
Sebastian is showing Souleymans' slides
Question: is JSON-LD equivalent to RDF ?
Assumption: RDF -> JSON-LD works fine ... JSON-LD -> RDF is difficult
Sebastian: last week presentation
in SSN ... how does it look like in JSON-LD?
... once Souleiman joins us we can discuss in detail
3. Agenda: Evrythng presents WoT Label
Dom presents slides "towards a lightewight standard to make things talk web"
Dom same slides as in Munich
Dom: idea to resolve the "mess"
of the IoT
... bringing order in the chaos on the Application Level
... at least have uniformity on the Application Layer
... mission is bridging gap between things and Web
... results are from compose EU project + evrythng
... WoT != IoT --> need for simple set of rules (protocol,
resource models, support for extensions)
... goal: 1. blueprints, 2. standard resource model
... helpful for e.g.: automatic UI generation, automatic
mashups, API to API integration, M2M communication ...
... find the document here: bit.ly/WOT-LABEL
... use same blueprints, resources, formats for thing, gateway,
cloud
Johannes: more important than format is the data model
Dom: agrees. first decide on
entities and structure
... then see about data format
... quite often used in the field: MessagePack
Dave: agrees. scalability is important
Dom: could see base model encoded in JSON and then extensions in JSON-LD
<jhund> +1 for media type
Dave: actually JSON-LD already
supports that
... JSON-LD allows to specify default namespace
Dom: shows slide: actors: 1.
clients & 2. web things (virtual counterparts of physical
objects)
... Client performs "Actions" on Web Things
... Web Thing communicates "Events" to Client
... Web Thing has "Properties" (e.g. temperature)
Darko: how can a client understand what a web thing offers?
Dom: we propose a common way of
modelling properties
... the practicality of a full semantic web approach is not yet
given
... shows related proposals: GATT REST API, Apple Home Kit,
Google Brillo & Weave
Dave: what is needed are
well-defined and shared vocabularies
... it relates to discovery... you want vocabularies for
that
Johannes: Question: could {wt}/meta store semantic annotation?
Dom: yes
Ari: have you looked into IPSO
smart object
... it is an ongoing initiative and they are looking for
input
Sebastian: asks for a presentation on IPSO smart objects
Ari: yes we can do that
Dom: compose and evrythng API do not define yet semantic models for things
Sebastian: what is now the WoT label?
Dom: the idea is to give a label
to things that are Web friendly
... it was just the initial name for the initiative
... http://devices.webofthings.io
... next steps: 1. document now open for comments, 2.
subscriptions & web sockets, 3. major protocols integration
(mqtt, coap), 4. integration points (semantic web, social
networks,...), --> first draft June 16.
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