[Data-modeling] Processes

[Iain Sproat]

Thanks jeff - I've fixed that now.
Iain

On Mon, May 11, 2009 at 11:34 PM, Jeff Prucher <jeff at metaweb.com> wrote:

>
> >
> > Firstly, there is a Process
> > <http://process.freebase.com/type/schema/base/process/process>
> >   type, e.g. Nitrogen fixation
> > <http://process.freebase.com/view/en/nitrogen_fixation>  ,
> > which has some Input and Output properties (these would be
> > typically expect a type of material, but to allow for
> > flexibility I'm only going to expect a type of Topic) A
> > process can be composed of other component processes (for the
> > Nitrogen Cycle
> > <http://process.freebase.com/view/en/nitrogen_cycle>  these
> > would be Nitrogen fixation
> > <http://process.freebase.com/view/en/nitrogen_fixation>  ,
> > decomposition
> > <http://process.freebase.com/view/en/decomposition>  ,
> > Nitrification
> > <http://process.freebase.com/view/en/nitrification>  etc.).
> > Parent and component processes are linked with a Process
> > stage CVT
> > <http://process.freebase.com/type/schema/base/process/process_
> > stage>  .
> >
> > I was trying to model the order in which stages of a process
> > occur (e.g. decomposition, followed by Nitrification,
> > followed by assimilation) by using "previous stage" and
> > "subsequent stage" properties - but that led to a CVT within
> > a CVT which the client doesn't agree with.  I've worked
> > around this to make Process stage have an Input and Output
> > property, but this means that input and outputs both need to
> > be entered twice - once into the Process topic and another
> > time into the Process stage CVT - not ideal but it works.
>
> Why use a CVT between the Part Of and Component properties?  I _think_ that
> if you just made the "input" and "output" properties of "Process" into
> disambiguators, they would show up as a tabular display without a CVT, and
> therefore without requiring redundant data entry.
>
> -Jeff
>
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