[open-linguistics] Question: replacing language codes in a SPARQL BIND statement?

[Christian Chiarcos]

> As far as I know there is no provision in SPARQL for querying ignoring  
> the language literal. In RDF at least "cat", "cat"@en and "cat"@en-GB  
> are all >different values. Perhaps you could ask this question on a list  
> like public-lod at w3.org or semantic-web at w3.org?

Of course, but there, this is probably considered a pathological case of  
marginal relevance. Before I suggest extending the semantics of BIND to  
cover this particular problem, I'd like to be sure I didn't miss anything  
;)

Best,
Christian

> On Sun, Mar 13, 2016 at 11:09 AM, Christian Chiarcos  
> <chiarcos at informatik.uni-frankfurt.de> wrote:
>> Dear all,
>>
>> this is a general technical question, albeit one specific to working  
>> with multilinguality issues in multiple lemon/ontolex dictionaries,  
>> hence I'm asking >>here in the first place.
>>
>> Imagine the following situation: I use the Russian DBnary (provided in  
>> a slightly extended variant of the old lemon) and an ontolex dictionary  
>> for >>Chalkan (with Russian glosses). Both provided by third parties,  
>> and I do not want to manipulate the data prior to querying. Now, I want  
>> to use DBnary >>to retrieve an English gloss for the Chalkan words in a  
>> single SPARQL query.
>>
>> If both dictionaries use the same xml:lang representation, this works  
>> rather well (I skip the query for reasons of brevity): I bind the  
>> Russian gloss from >>the Chalkan dictionary to variable ?ru and start  
>> searching DBnary for a data property that assigns ?ru as literal.
>>
>> It is more complicated, though, if both files use different language  
>> codes, e.g., ISO-639-3 (rus) and ISO-639-2 (ru) for Russian, or if a  
>> language code with >>region sub-tag is used (e.g., ru-RU). Is there any  
>> way to use, say, BIND to bind the string value of ?ru to a new variable  
>> which uses ISO-639-2 codes >>instead of the original ISO-639-3 (resp.  
>> ISO-639-2+ISO-3166) code?
>>
>> At the moment, I see only one way to solve this problem, i.e., using  
>> FILTER, str() and a string comparison of both variables. This should be  
>> fairly >>inefficient, though, as I presume the FILTER is applied only  
>> after all potential bindings for both variables for Russian terms have  
>> been determined.
>>
>> Am I overlooking anything?
>>
>> Best,
>> Christian
>> --Prof. Dr. Christian Chiarcos
>> Applied Computational Linguistics
>> Johann Wolfgang Goethe Universität Frankfurt a. M.
>> 60054 Frankfurt am Main, Germany
>>
>> office: Robert-Mayer-Str. 10, #401b
>> mail: chiarcos at informatik.uni-frankfurt.de
>> web: http://acoli.cs.uni-frankfurt.de
>> tel: +49-(0)69-798-22463
>> fax: +49-(0)69-798-28931
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>



-- 
Prof. Dr. Christian Chiarcos
Applied Computational Linguistics
Johann Wolfgang Goethe Universität Frankfurt a. M.
60054 Frankfurt am Main, Germany

office: Robert-Mayer-Str. 10, #401b
mail: chiarcos at informatik.uni-frankfurt.de
web: http://acoli.cs.uni-frankfurt.de
tel: +49-(0)69-798-22463
fax: +49-(0)69-798-28931
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