Querying ULAN with python

[ziny...@gmail.com]

I'd like to search ULAN for artist names and output the preferred name with Python.

I found a useful library http://skosprovider-getty.readthedocs.io/en/stable/index.html but it seems that there are only AAT and TGN providers.

Is there a way accomplishing this? A link to sample code would help a lot.

Thanks

Zin

[Gabriel Kerneis]

According to the doc, ULAN is supported as well: http://skosprovider-getty.readthedocs.io/en/stable/api.html#skosprovider_getty.providers.ULANProvider

Gabriel

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[ziny...@gmail.com]

meanwhile I was able to aubmit a query successfully:

'''

This script demonstrates using the ULANProvider to get the concept of Artists

'''

from skosprovider_getty.providers import ULANProvider

ulan = ULANProvider(metadata={'id': 'ULAN'})

artist = ulan.find({'label': 'Gončarova'})

#artist = ulan.get_by_id(500115630)

print(artist[0])

{'id': '500115630', 'uri': 'http://vocab.getty.edu/ulan/500115630', 'type': 'Concept', 'label': "Goncharova, Natal'ya", 'lang': ''}

But, what I'm interested in is the preferred name as stated on http://www.getty.edu/vow/ULANFullDisplay?find=natalia+goncharova&role=&nation=&subjectid=500115630.

How do I get this?

[vladimir...@ontotext.com]

'label': "Goncharova, Natal'ya"

But, what I'm interested in is the preferred name as stated on http://www.getty.edu/vow/ULANFullDisplay?find=natalia+goncharova&role=&nation=&subjectid=500115630.

The python provider gets correct info. You can see the pref and alt labels in RDF at http://vocab.getty.edu/ulan/500115630?inference=implicit. 

I can only surmise that the website data was updated recently and the RDF data will be updated within the next 2 weeks. Gregg, could you comment?

You can see the change log of that ULAN concept using this query; the last change to a term was in 2011. But of course it won't tell you what future changes will be made

select * {

  [prov:used ulan:500115630; 

             dc:type ?type;

             prov:startedAtTime ?time;

             dc:description ?descr]

} order by ?time

I also notice that this concept dcterms:replaces ulan:500002610, ulan:500114934. I.e. those two have been merged into this one.

Zin, have you noticed any other ULAN pref label discrepancies between RDF and website?

[ziny...@gmail.com]

this one looks also strange

from skosprovider_getty.providers import ULANProvider

ulan = ULANProvider(metadata={'id': 'ULAN'})

artist = ulan.find({'label': 'monet'})

print(artist[0]['label'])

>>> Hoschedé-Monet, Blanche

Should be Hoschedé-Monet, Blanche

I've following additional questions:

1. Is the first label returned always the prefered name?

2. How can I integrate an RDF query for ULAN within Python?

[ziny...@gmail.com]

this is how I got it right:

print(artist[0]['label'].encode('latin1').decode('utf-8'))

[Getty Vocabularies LOD]

The data was updated today, but this update will not fix the discrepancy between the skos:prefLabel for this record and preferred term in the online web site. I did some checking the reason is because the skos:prefTerm is marked as preferred for the language of "undetermined" in the data which is not correct. I see about 9000 records in ULAN where this is the case. This issue will be fixed in the next publish (January), but meanwhile if you want to always get the preferred term for a ULAN record, I suggest using the gvp:prefLabelGVP property.

Gregg Garcia
Software Architect
Getty Digital

[vladimir...@ontotext.com]

> suggest using the gvp:prefLabelGVP property.

To elaborate on this:
http://vocab.getty.edu/ulan/500115630 has gvp:prefLabelGVP http://vocab.getty.edu/ulan/term/1500203181.
http://vocab.getty.edu/ulan/term/1500203181 has xl:literalForm "Goncharova, Natalia".

You can query and get prefLabelGVP with a query like this

select * {

  ?x luc:term "Monet"; 

     skos:inScheme ulan: ; 

     gvp:prefLabelGVP/xl:literalForm ?name ;

     #rdf:type gvp:PersonConcept

 # filter(regex(?name,"Monet[^a-z]"))

}

luc: is Lucene FTS and it searches with some name variation. If you want an exact match, you can uncomment the filter.

If you want to exclude institutions (Musée Marmottan Monet), uncomment the rdf:type part.

See http://vocab.getty.edu/queries for a lot more examples.

> 1. Is the first label returned always the prefered name?

Consult the skosprovider_getty documentation or ask at its page (eg as a github issue)

> 2. How can I integrate an RDF query for ULAN within Python?

You need to use a more general library. A quick search for "python sparql" on stackoverflow comes up with

https://rdflib.github.io/sparqlwrapper/