Re: DBLP Sparql Endpoint

Also have a look at the http://www.w3.org/TR/sparql11-query/#func-strstarts
function instead of a REGEX. Can give a small perf increase.

Regards,
Jerven 


On 04 Apr 2014, at 11:34, Alfredo Serafini <seralf@gmail.com> wrote:

> Hi for me seems to work, for example using instead:
> 
> SELECT DISTINCT * WHERE {
> ?a a foaf:Agent .
> ?a foaf:name ?n .
> FILTER  regex(?n, '^(.+\\s+)*b', 'i')
> }
> LIMIT 10
> 
> I obtain as the first threee results the following ones:
> "(Zhou) Bryan Bai"
> "A-Reum Bae"
> "A. A. (Louis) Beex"
> 
> If you want to work with surname the problem is related to the fact that all the data (name, surname) are in the foaf:name field, so that the only way seems to use a more specific regex, for example excluding the first part which can be something like "A. ", "B. A." or similar...
> 
> 
> 
> 
> 2014-04-04 10:11 GMT+02:00 Wetz Peter <peter.wetz@tuwien.ac.at>:
> Dear all!
> 
>  
> 
> I would like to use the DBLP Sparql Endpoint at [1] to retrieve publications of authors by REGEX Search. This, however, seems not to work as expected.
> 
>  
> 
> This query returns authors starting with an “A”:
> 
> 
> SELECT DISTINCT * WHERE {
> 
> ?a a foaf:Agent .
> 
> ?a foaf:name ?n .
> 
> FILTER  regex(?n, '^a', 'i')
> 
> }
> 
> LIMIT 10
> 
>  
> 
> This query should return authors starting with a “B”:
> 
>  
> 
> SELECT DISTINCT * WHERE {
> 
> ?a a foaf:Agent .
> 
> ?a foaf:name ?n .
> 
> FILTER  regex(?n, '^b', 'i')
> 
> }
> 
> LIMIT 10
> 
>  
> 
> This does not return any results, and I don’t know why. Actually, it’s not working with any other letter except “A”. What I simply want to do is, to search for authos based on an input string.
> 
>  
> 
> Maybe, somone of you can help.
> 
>  
> 
> Thanks in advance,
> 
> Peter
> 
>  
> 
> [1] http://dblp.l3s.de/d2r/snorql/
> 
>

Received on Friday, 4 April 2014 10:25:31 UTC