Hi,
shouldn't the start be to decide what the requirements towards the
classification scheme are? Without knowing what the goal for the
classification scheme should be it seems to me to be very hard (or
arbitrary) to look at different upper ontologies and say "hey this one will
fit our project". Also there might be some technical limitations that need
to be taken into account (while overviewing the discussion i saw something
about no binary properties).
Good day,
Friedrich
On Thu, Sep 5, 2013 at 6:06 AM, emw <emw.w...@gmail.com> wrote:
> Hi Wikidatans,
>
> The conclusion of the 'Primary sorting property' RFC is that property P107
> -- main type (GND) -- will be deleted [1, 2, 3]. The most popular option
> for replacing P107 is to use properties P31 and P279 ('instance of' and
> 'subclass of'), which are based on rdf:type and rdfs:subclassOf [4, 5].
> Unlike P107, which restricts the world into seven high-level classes,
> 'instance of' and 'subclass of' give users a flexible way to define an
> item's type. They also enable hierarchical classification, and are in line
> with Semantic Web conventions.
>
> While general agreement exists on that much, there's active discussion in
> the new 'Migrating away from GND main type' RFC [6] about precisely how we
> want to capture P107 information with 'instance of' and 'subclass of'.
> P107 is Wikidata's most popular property by a significant margin -- it's
> currently used in 4,237,061 claims -- so it's important that we get this
> right.
>
> Many people on this list are knowledgeable about ontology and
> classification but not part of the on-wiki commentariat that tends to
> populate Wikidata RFCs. To those people: please give your input in this
> migration RFC at
> https://www.wikidata.org/wiki/Wikidata:Requests_for_comment/Migrating_away_from_GND_main_type.
> It has some really interesting questions, like:
>
> A) How should we classify items like 'Ronald Reagan', 'Rabindranath
> Tagore' and 'Coco Chanel'? That is, how should we classify items that have
> a GND main type of "person"? A main critique of P107 is that it includes
> in 'person' things like gods, literary characters, spirits, and individual
> and collective pseudonyms. It's clear we want greater precision than
> P107's "person", but it's unclear whether it'd be best to map those claims
> to instance of 'person', 'human', 'human person', or something else.
> Discussion on this is in
> https://www.wikidata.org/wiki/Wikidata:Requests_for_comment/Migrating_away_from_GND_main_type#Person
> .
>
> B) How should we classify the GND main types themselves, or the classes
> they get mapped to? This is essentially a question about upper ontologies
> [7] for Wikidata. There are widely-used third-party upper ontologies like
> SUMO, UMBEL and BFO [8, 9, 10]. It's worth discussing which of these -- if
> any -- is best to adopt for Wikidata's high-level classification. Although
> it probably warrants a separate RFC, some initial discussion of that is in
> https://www.wikidata.org/wiki/Wikidata:Requests_for_comment/Migrating_away_from_GND_main_type#High_classification
> .
>
> C) How can we visualize the type hierarchies we're creating with P31 and
> P279? See
> https://www.wikidata.org/wiki/Wikidata:Requests_for_comment/Migrating_away_from_GND_main_type#Visualization_of_subclass_of_.28P279.29_relationship
> .
>
> The previous 'Primary sorting property' RFC was easier than this new RFC
> will be -- deciding something is a bad idea is easier than actually
> replacing it with something better.
>
> So, please join the discussion at
> https://www.wikidata.org/wiki/Wikidata:Requests_for_comment/Migrating_away_from_GND_main_type
> !
>
> Thanks,
> Eric
>
> https://www.wikidata.org/wiki/User:Emw
>
>
> 1)
> https://www.wikidata.org/wiki/Wikidata:Requests_for_comment/Primary_sorting_property
>
> 2) http://lists.wikimedia.org/pipermail/wikidata-l/2013-June/002451.html
>
> 3) https://www.wikidata.org/wiki/Property:P107
>
> 4) http://www.w3.org/TR/rdf-schema/#ch_type
>
> 5) http://www.w3.org/TR/rdf-schema/#ch_subclassof
>
> 6)
> https://www.wikidata.org/wiki/Wikidata:Requests_for_comment/Migrating_away_from_GND_main_type
>
> 7) https://en.wikipedia.org/wiki/Upper_ontology
>
> 8) https://en.wikipedia.org/wiki/Suggested_Upper_Merged_Ontology
>
> 9) https://en.wikipedia.org/wiki/UMBEL
>
> 10) https://en.wikipedia.org/wiki/Basic_Formal_Ontology
>
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>
>
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