|
| Re: semantic description in om2m [message #1481850 is a reply to message #1479157] |
Fri, 21 November 2014 09:19   |
 Mahdi Ben Alaya
Messages: 229
Registered: November 2013 |
Senior Member |
|
|
Hi Salma,
The current open source version of OM2M do not include semantic models. But, in the context of our research activities, we are working on enhancing M2M data interoperability based on ontologies and semantic reasoning. We are mainly focusing on integrating the SSN ontology (See http://www.w3.org/2005/Incubator/ssn/XGR-ssn-20110628/).
So far, ETSI did not published any standard specification related to this issue. However a technical report exists untitled "ETSI TR 101 584 Study on Semantic support for M2M Data" ( see http://www.etsi.org/deliver/etsi_tr/101500_101599/101584/02.01.01_60/tr_101584v020101p.pdf) which provides more details about the semantic challenge and possible solutions.
In OM2M we are mainly using the ETSI M2M standard resource structure in general. We are also using the Open Building information Exchange (oBIX) data model from OASIS (See http://www.obix.org/) to represent device and application description and the generated payload as well.
Since oBIX is not part of the ETSI standard, then it can be replaced by a more advanced data model.
The data exposed by SCL are always available using HTTP, CoAP or local library call.
Hope this can help.
[Updated on: Fri, 21 November 2014 09:23] Report message to a moderator |
|
|
|
| Re: semantic description in om2m [message #1490107 is a reply to message #1485447] |
Thu, 27 November 2014 23:51 |
Mahdi Ben Alaya
Messages: 229
Registered: November 2013 |
Senior Member |
|
|
Hello Fesseha,
OM2M is developed within the LAAS-CNRS laboratory by a team composed mainly of researchers. Internally, we have a version of OM2M including some advanced features related to our research topics where we are experimenting semantic models and reasoning, information centric networking, autonomic computing, and so on. At the same time, we are working on extending the open source version of OM2M with new plugins useful for developers such as interworking with zigbee, knx, mqtt and 6lowPan, and provide a nice front and back-end interfaces as well.
SSN is based on RDF, an XML based format so not really efficient for constraint devices. But at least, you can use SSN concepts and relations in another lightweight format. This will help you to reduce the quantity of new names to be used in your system, and so decrease the semantic gap. The main idea from using SSN here is the ability to do semantic reasoning on data by a more high level application. Actually we are using the Core Link Format from IETF to describe hosted resources withing constrained devices. I am not familiar with IPSO smart objects model, and I am not sure if it supports semantic. For me, IPSO is something similar to oBIX but I will try to investigate more this alternative. I agree with about XML overhead, that's why we are working on integrating JSON in OM2M.
OM2M is still in the incubation phase. All information about the roadmap and news will be detailed here: https://wiki.eclipse.org/OM2M#Project_Management. We are now updating some third libraries to complete the Eclipse validation process to go to our first release which will include json format, zigbee interworking proxy plugin and a nice charts interface.
Cheers
|
|
|
|
|
|
|
Powered by
FUDForum. Page generated in 0.04414 seconds
] 
Search
Help
Register
Login
Home
