Re: [TF-TD] experimenting with mapping JSON based data models to RDF triples

> On 29 Dec 2015, at 01:52, Drasko DRASKOVIC <drasko.draskovic@gmail.com> wrote:
> 
> Hi Dave,
> 
> On Mon, Dec 28, 2015 at 5:22 PM, Dave Raggett <dsr@w3.org <mailto:dsr@w3.org>> wrote:
>> To attract Web developers to working with the Web of Things we need simple
>> notations for describing the properties, actions and events for things.
>> Simple notations are also needed for Web of Things servers on resource
>> constrained microcontrollers.
>> 
>> Data models are one kind of metadata for things, and we also need a way to
>> map these models to the underlying resource description framework (RDF).
>> 
>> JSON-LD [1] is appealing due to its use of the very popular JavaScript
>> Object Notation (JSON).  However, JSON-LD wasn’t designed with thing data
>> models in mind. I have therefore been exploring the implications for
>> translating JSON based data models to RDF triples.
>> 
>> My experiments are in the form of a Web page that expresses the algorithm in
>> JavaScript.
>> 
>>    http://www.w3.org/2016/01/json2rdf.html
>> 
>> I would like to request some time at an upcoming Thing Description task
>> force call to introduce this work and talk through the questions that arise.
>> These include:
>> 
>> How to survey the Web developer community for their opinions
>> The role of paths for uniquely naming fields in thing data models
>> Allowing for deeply nested data models for properties, actions and events
>> Processing implications for different approaches for representing data
>> models
>> The role of open versus closed world hypothesis for thing data models
>> How to address versioning — something critical for web scale services
> 
> I know that we had similar discussion before, but did you take a look
> at CoRE format: https://tools.ietf.org/html/rfc6690? <https://tools.ietf.org/html/rfc6690?>

Yes, I have, and there are many other serialisations for RDF, e.g. Turtle, N3, RDF-XML, binary encodings of triples and so forth. But, it isn’t just about RDF, for the Web of Things we need solutions for declaring the data models exposed to applications. These needs to be simple and appealing to Web developers. We also need to consider the processing implications for resource constrained devices including low-end microcontrollers. I welcome a discussion on this as I don’t think that any of the existing solutions are a good fit.

—
   Dave Raggett <dsr@w3.org <mailto:dsr@w3.org>>