12:01:54 <RRSAgent> RRSAgent has joined #wot-uc
12:01:54 <RRSAgent> logging to https://www.w3.org/2021/07/27-wot-uc-irc
12:02:29 <kaz> meeting: WoT Use Cases
12:03:34 <kaz> present+ Kaz_Ashimura, Chinn_Hwa_Lim
12:03:53 <kaz> present+ Ege_Korkan, Michael_Lagally, Michael_McCool, Rainer_Sciekofer
12:04:02 <kaz> present+ Sebastian_Kaebisch
12:04:25 <sebastian> sebastian has joined #wot-uc
12:04:30 <kaz> scribenick: sebastian
12:04:58 <kaz> present+ Tomoaki_Mizushima
12:05:17 <kaz> Agenda: https://www.w3.org/WoT/IG/wiki/IG_UseCase_WebConf#Agenda_27.7.
12:05:41 <kaz> topic: Guest
12:05:48 <kaz> -> https://www.w3.org/Consortium/Patent-Policy-20170801/ W3C Patent Policy
12:06:45 <sebastian> topic: minutes check
12:06:51 <sebastian> ... was about ECLASS
12:06:57 <sebastian> any objections?
12:06:58 <sebastian> no
12:07:01 <kaz> i|was|-> https://www.w3.org/2021/07/13-wot-uc-minutes.html July-13|
12:07:07 <kaz> s/... was/ml: was/
12:07:36 <kaz> rrsagent, make log public
12:07:41 <kaz> rrsagent, draft minutes
12:07:41 <RRSAgent> I have made the request to generate https://www.w3.org/2021/07/27-wot-uc-minutes.html kaz
12:07:43 <sebastian> ML: Christian Block provided the slides from last time
12:08:09 <mlagally> https://www.w3.org/2021/05/25-wot-uc-minutes.html
12:08:16 <mlagally> https://github.com/w3c/wot-usecases/pull/138
12:08:29 <sebastian> ML: lets check the minutes from May 25
12:08:32 <sebastian> any objections?
12:08:36 <sebastian> no
12:08:57 <kaz> s|https://www.w3.org/2021/05/25-wot-uc-minutes.html|-> https://www.w3.org/2021/05/25-wot-uc-minutes.html May-25|
12:09:51 <kaz> topic: OPC-UA collaboration
12:10:35 <sebastian> RS: give presentation what is cover by OPC UA
12:10:47 <sebastian> ... first of all OPC UA is not a protocol
12:11:01 <kaz> i/minutes check/ml: Rainer Schiekofer from Siemens is a guest for the OPC-UA collaboration topic today, and aware of the W3C Patent Policy./
12:11:24 <sebastian> ... is a collection of technologies to ensure a secure exchange of standardized information from the sensor to the cloud
12:12:28 <sebastian> ... OPCF membership 820
12:12:57 <kaz> Chair: Lagally
12:13:00 <kaz> rrsagent, draft minutes
12:13:00 <RRSAgent> I have made the request to generate https://www.w3.org/2021/07/27-wot-uc-minutes.html kaz
12:13:28 <kaz> i/Rainer S/scribenick: kaz/
12:13:29 <sebastian> ... why companies join the OPCF?
12:13:30 <kaz> rrsagent, draft minutes
12:13:30 <RRSAgent> I have made the request to generate https://www.w3.org/2021/07/27-wot-uc-minutes.html kaz
12:14:12 <sebastian> ... guarantees early information to upcoming key technologies
12:14:23 <kaz> i/was about ECLASS/scribenick: sebastian/
12:14:25 <kaz> rrsagent, draft minutes
12:14:25 <RRSAgent> I have made the request to generate https://www.w3.org/2021/07/27-wot-uc-minutes.html kaz
12:15:10 <kaz> s/minutes check/Minutes check/
12:15:11 <kaz> rrsagent, draft minutes
12:15:11 <RRSAgent> I have made the request to generate https://www.w3.org/2021/07/27-wot-uc-minutes.html kaz
12:15:38 <sebastian> ... increasing number of companion specifications
12:15:58 <sebastian> ... currently 63
12:16:56 <sebastian> ... new specs addressing information models
12:17:45 <sebastian> ... there is a huge number of liaison partners
12:18:10 <sebastian> ... like with W3C
12:18:55 <Ege> Ege has joined #wot-uc
12:20:46 <sebastian> RS: shows an example of liaison partnership in the Process Automation domain
12:21:37 <kaz> q?
12:21:51 <sebastian> ...
12:22:57 <sebastian> ... currently working on OPC UA FX. First live demo at SPS in November 2021
12:24:39 <sebastian> RS: OPC UA has two communication paradigms
12:24:58 <sebastian> ... client - server and pub / sub
12:27:16 <sebastian> ... pub / sub also transport meta data
12:28:06 <sebastian> ... also support end2end encryption
12:28:29 <kaz> q?
12:28:38 <kaz> q+ McCool
12:28:40 <kaz> ack m
12:28:48 <sebastian> MC: can you also use different certificates then UA based ones?
12:28:55 <sebastian> RS: yes
12:29:04 <sebastian> q?
12:29:09 <kaz> s/then/than/
12:30:32 <sebastian> RS: UA comes also with a subscription feature
12:30:49 <kaz> q+ to ask about binding for different protocols
12:31:24 <sebastian> ... the information model is based on variables, object, data and reference type
12:33:46 <sebastian> ... you can transform OPC UA to an ontology
12:34:35 <Ege> q+
12:35:27 <sebastian> RS: how to create a companion specifications
12:36:04 <mlagally> @Kaz, Ege - let's handle questions at the end
12:38:17 <mlagally> q+
12:38:20 <sebastian> q?
12:39:32 <kaz> ack k
12:39:33 <Zakim> kaz, you wanted to ask about binding for different protocols
12:39:36 <sebastian> Kaz: we should think about a possible binding. UA can use different protocols. Is this kind of binding addressed?
12:40:32 <sebastian> RS: yes, we should address the different communication paradigm, the interaction patterns and the security
12:41:33 <sebastian> Ege: when I do a cloud communication, do I need a specific libraries?
12:46:52 <sebastian> RS: there are some activities that is called CASY(?)
12:46:57 <kaz> q?
12:47:01 <kaz> ack E
12:47:43 <sebastian> ML: is there some plans to have Information Model as JSON?
12:48:21 <sebastian> RS: we had the plan to use JSON-LD, however, there is no ontology available
12:49:29 <sebastian> ML: there is end2end security, can you exlplain more in detail
12:50:15 <sebastian> RS: there is not defined which part of the JSON have to be signed
12:51:10 <sebastian> q?
12:51:23 <kaz> scribenick: kaz
12:51:39 <kaz> sk: there is already a liaison between OPC and W3C
12:52:00 <kaz> ... very good time to work more actively
12:52:02 <kaz> q+
12:52:04 <kaz> ack ml
12:52:17 <kaz> ... the spec is getting stable
12:52:24 <kaz> ... the question is what should be the target
12:52:44 <kaz> ... e.g., how to specify OPC endpoint
12:53:01 <kaz> ... integrating applications
12:53:09 <kaz> ... how to describe the interface
12:53:21 <kaz> ... how to setup the OPC UA interfaces
12:53:35 <kaz> ... very clear to the clients
12:53:58 <kaz> ... see some activities on defining TDs compatible with OPC UA
12:54:12 <kaz> ... we can use the information to generate actual TDs
12:54:15 <kaz> ... mapping to the TD
12:54:28 <kaz> ... methods equivalent
12:54:45 <kaz> ... also think about communication information need to be provided
12:54:51 <kaz> ... for OPC servers/clients
12:55:10 <kaz> ... what kind of endpoint/node information to be transferred
12:55:17 <kaz> ... based on some specific TDs
12:55:23 <kaz> ... open questions there
12:55:33 <kaz> ... also security clarifications
12:55:38 <kaz> ... metadata in TDs
12:55:54 <kaz> ... possibly to be transferred to the OPC UA endpoints
12:56:01 <kaz> ... next slides (18)
12:56:08 <kaz> ... joitn activity proposal
12:56:15 <kaz> s/joitn/joint/
12:56:29 <kaz> ... OPC UA context to be referred to from TD
12:56:37 <kaz> ... metadata for UA security mode
12:56:48 <mlagally> q+
12:56:48 <kaz> ... equivalent variables
12:57:02 <kaz> ... metadata for UA communications
12:57:09 <kaz> ... addressing scheme and URL patterns
12:57:19 <kaz> ... content types, e.g., for UA binary and XMLs
12:57:25 <kaz> .. local security setup
12:57:30 <kaz> ... custom UA options
12:57:40 <kaz> s/.. l/... l/
12:58:24 <kaz> ... next
12:58:27 <McCool> q+
12:58:31 <kaz> ... Web of Things s bridging technology
12:58:36 <kaz> ... win-win situation
12:58:54 <kaz> ... industry specific semantic on the OPC UA side
12:59:03 <kaz> ... rich tool landscape on the WoT side
12:59:25 <kaz> q?
12:59:46 <kaz> ml: remaining slides to be discussed next week?
13:00:02 <kaz> sk: I'm OK
13:00:13 <kaz> ... but what about you, Rainer?
13:00:19 <kaz> rs: will try
13:00:46 <kaz> kaz: @@@
13:00:49 <kaz> ack k
13:01:02 <kaz> mm: wanted to talk about security but can wait until next week
13:01:39 <kaz> s/@@@/wanted to suggest we discuss the next step, e.g., use case description and plugfest collaboration
13:01:52 <kaz> ... also thinking about possible binding based on the use case description
13:01:58 <kaz> ... but can wait until next week
13:02:06 <kaz> [adjourned]
13:02:10 <kaz> rrsagent, draft minute
13:02:10 <RRSAgent> I'm logging. I don't understand 'draft minute', kaz.  Try /msg RRSAgent help
13:02:12 <kaz> rrsagent, draft minutes
13:02:12 <RRSAgent> I have made the request to generate https://www.w3.org/2021/07/27-wot-uc-minutes.html kaz