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Re: Describing the relationships between units-of-measure?

• To: "Roger L. Costello" <costello@m...>
• Subject: Re: Describing the relationships between units-of-measure?
• From: "Chiusano Joseph" <chiusano_joseph@b...>
• Date: Fri, 18 Jul 2003 09:23:39 -0400
• Cc: xml-dev@l...
• Organization: Booz Allen Hamilton
• References: <3F17DDEE.AFAC5A54@m...>

<Quote1>
Let's suppose that units-of-measure are represented as properties, e.g,

   <River id="Yangtze">
        <length>
            <kilometer>6300</kilometer>
        </length>
   </River>

</Quote1>

My personal preference and style of representing this would be to
represent the unit of measure as an attribute of "length", because it
really does modify/describe/act as a property of the length:

   <River id="Yangtze">
        <length UOM="Km">6300</length>
   </River>

<Quote2>
Do you have any suggestions on how to syntactically represent this
relationship statement? 
</Quote2>

How about OWL?

Kind Regards,
Joe Chiusano
Booz | Allen | Hamilton

"Roger L. Costello" wrote:
> 
> Hi Folks,
> 
> Let's suppose that units-of-measure are represented as properties, e.g,
> 
>    <River id="Yangtze">
>         <length>
>             <kilometer>6300</kilometer>
>         </length>
>    </River>
> 
> Here is an example where the length of the Yangtze River is described
> using a mile property:
> 
>    <River id="Yangtze">
>         <length>
>             <mile>3914</mile>
>         </length>
>    </River>
> 
> It would be very useful to be able to state the relationship between the
> kilometer and mile properties.  For example, suppose that I wish to
> define the kilometer property:
> 
>     <Property id="kilometer">
>         ...
>     </Property>
> 
> When I define this property it would be very useful to express that this
> property is related to the mile property, e.g.,
> 
>     <Property id="kilometer">
>         "This property is related to the mile property.  Namely,
>          if the value of a mile property is multiplied by 1.62
>          and it yields a value that is equal to the value of this
>          property, then the two properties are said to represent
>          the same distance."
>     </Property>
> 
> Do you have any suggestions on how to syntactically represent this
> relationship statement?
> 
> Here is a more complex example, showing a map location using two
> different coordinate systems:
> 
> <Map id="M1">
>     <location>
>         <cartesian-coordinate>
>             <x>
>                 <kilometer>100</kilometer>
>             </x>
>             <y>
>                 <kilometer>100</kilometer>
>             </y>
>         </cartesian-coordinate>
>     </location>
> </Map>
> 
> <Map id="M21">
>     <location>
>         <polar-coordinate>
>             <r>
>                 <kilometer>141.421</kilometer>
>             </r>
>             <theta>
>                 <radian>0.7341</radian>
>             </theta>
>         </polar-coordinate>
>     </location>
> </Map>
> 
> It would be very useful to be able to state the relationship between
> these coordinate systems, e.g.,
> 
>     <Property id="cartesian-coordinate">
>         "This property is related to the polar-coordinate
>          property.  Namely, if these equations are satisfied:
>              x = r sin theta
>              y = r cos theta
>          then the two properties are said to represent the same
>          location."
>     </Property>
> 
> (For the moment let's ignore the conditions that Alaric noted yesterday)
> 
> Do you have any suggestions on how to syntactically represent this
> relationship?
> 
> /Roger
> 
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org:Booz | Allen | Hamilton;IT Digital Strategies Team
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