Andy,
Yes, your understanding of the /chemicals_of_this_type is correct. It is
used to classify "instance of this type" ... and not "part of"
parent-child
relationships. Here is the actual definition used in Freebase:
Chemical compounds that are included in this classification
However, there are a few assumption errors in the data (Object/Values),
that I agree probably need to be corrected later.
Not sure how chemists classify a component of a Thing, i.e., the following
statements need to be analyzed and understood by a chemist, but then there
are layman concepts that should also probably be held in a new Wikidata
property if the community finds it useful to explain chemicals:
"
It is one of the two components of starch, the other being amylose.
"
" Starch branching enzyme
<https://en.wikipedia.org/wiki/Starch_branching_enzyme> introduces
1,6-alpha glycosidic bonds between these chains, creating the branched
amylopectin. "
Thad
+ThadGuidry <https://www.google.com/+ThadGuidry>
On Thu, Jun 18, 2015 at 7:50 AM, Andy Mabbett <andy(a)pigsonthewing.org.uk>
wrote:
On 17 June 2015 at 20:17, Thomas Pellissier-Tanon
<thomaspt(a)google.com>
wrote:
@Andy
> It seems to me that, before the dats can be
imported, we'll need to add
> several new Wikidata properties. Was that your intention?
feel free to start the
property creation process. I'm still at Google for 8 weeks so we have
time
to go throw the property creation process.
I'm happy to do that; but I may need some help with knowing what is
meant by each property. For example:
https://www.freebase.com/chemistry/chemical_classification/chemicals_of_thi…
seems to be saying that Amylopectin is (in Wikidata terms) an
"instance of" (P31) a starch, but that doesn't seem right.
Also, properties which require data-types that have not yet been set
up, such as measurements, will have to wait for those data types to
become available. That won't occur within eight weeks.
--
Andy Mabbett
@pigsonthewing
http://pigsonthewing.org.uk
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