Re: SBML L2v2 specification vote #4: References to controlled vocabularies
22 Dec '05 08:10
On Thu, 22 Dec 2005 11:57:32 +0100
Ralph Gauges <email@example.com> wrote:
> The question is, do we consider an empty math field to be a formula or
> do we consider it to mean that there is no formula specified.
> Alternatively, we could think about making the formula attribute
> optional in Level 2 Version 2, so if no formula attribute was given
> and no sboTerm was given, this would be the same as if there was no
> kineticLaw, if both are given, the formula is what counts.
We must be very carefully here. The sboTerm is optional meaning the
MathML is still authoritative. The question remains what number or
function does an empty math element mean. I would interpret it as not a
number (NaN). If the sboTerm contradicts this, we again have to inform
the user about the problem. It may be good to have an sboTerm for an
undefined/unknown kinetic law which evaluates to NaN.
Stefan Hoops, Ph.D.
Senior Project Associate
Virginia Bioinformatics Institute - 0477
Bioinformatics Facility I
Blacksburg, Va 24061, USA
Phone: (540) 231-1799
Fax: (540) 231-2606