Re: WG discussion: proposal to remove BP2 - Provide context required to interpret data values

Hi Phil,

In this effort, I guess that Dave will be looking at the previous attempts to create UoM vocabularies and schemes (QUDT, UDUNITS, UCUM, JSR-275…) From what you say, he feels that QUDT is too heavyweight, but the list of discussion points seems to point to exactly the use cases that these previous efforts address. UoM is one of those things that looks simple on the surface, but is rather fiendish underneath…

Cheers,Jon



On 27/02/2017 14:33, "Phil Archer" <phila@w3.org> wrote:

    Caught in the trap...
    
    
    -------- Forwarded Message --------
    Subject: Re: WG discussion: proposal to remove BP2 - Provide context 
    required to interpret data values
    Date: Mon, 27 Feb 2017 14:17:35 +0000
    From: Dave Raggett <dsr@w3.org>
    To: Phil Archer <phila@w3.org>
    CC: Jeremy Tandy <jeremy.tandy@gmail.com>, SDW WG Public List 
    <public-sdw-wg@w3.org>
    
    
    
    > On 27 Feb 2017, at 12:21, Phil Archer <phila@w3.org> wrote:
    >
    > I know that Dave Raggett (in cc) has been looking at the issue of UoM for WoT. The QUDT vocab is too heavy weight for his needs. He may have something else to add to this.
    
    Semantic interoperability for the Web of things makes it necessary to 
    address units of measure.  The Web of things Interest Group has created 
    a task force to work on linked data and semantic processing. An 
    investigation into units of measure is one of the topics the task force 
    is expected to work on, and I expect this to involve reaching out and 
    coordinating with a broad range of groups.
    
    Some things to discuss include:
    
      -  a means to identify both the units of measure and the scale factor 
    using a single RDF node
      -  a means to derive the units of measure and scale factor as separate 
    RDF nodes
      -  a means to relate the units of measure to the physical quantity it 
    refers to (e.g. electrical current)
      -  agreements on short and long names for use in JSON based thing 
    descriptions (mA vs milliamperes)
      -  agreements on how units of measure can be grouped into meaningful 
    modules
    
    The Web of Things Interest Group is keen to welcome new members to help 
    with this work. If you’re interested, please get in touch with me.
    
    Dave Raggett <dsr@w3.org> http://www.w3.org/People/Raggett

    W3C lead for the Web of things

Received on Monday, 27 February 2017 15:29:29 UTC