On 10/4/19 3:58 AM, Thomas Francart wrote:

Hello

I understand the wikidata SPARQL label service only fetches the labels, but does not allow to search/filter on them; labels are also available in regulare rdfs:label on which a FILTER can be made.

However I would like to do full-text search over labels, to e.g. feed an autocomplete search field, actually just like the usual top-right wikidata search field does. I would also be interested to combine this with a criteria on "instance of", to search only on instances of a given class.

Can I do that efficiently using the Wikidata SPARQL service ? or is there a separate API I could use ? (exemple welcome)

Thanks

Thomas

--

Thomas Francart - SPARNA
Web de données | Architecture de l'information | Accès aux connaissances
blog : blog.sparna.fr, site : sparna.fr, linkedin : fr.linkedin.com/in/thomasfrancart
tel :  +33 (0)6.71.11.25.97, skype : francartthomas

Hi Thomas,

Remember, we also publish a SPARQL Endpoint for Wikdata access [1]. You can repeat your tests there too.

Example (note that the retry loop indicates resources limits of this particular instance setup):

Search on "Paris"

http://wikidata.demo.openlinksw.com/fct/facet.vsp?qxml=%3C%3Fxml%20version%3D%221.0%22%20encoding%3D%22UTF-8%22%20%3F%3E%3Cquery%20inference%3D%22%22%20same-as%3D%22%22%20view3%3D%22%22%20s-term%3D%22%22%20c-term%3D%22%22%3E%3Ctext%3EParis%3C%2Ftext%3E%3Cview%20type%3D%22text-d%22%20limit%3D%2220%22%20offset%3D%22%22%20%2F%3E%3C%2Fquery%3E

Config:

OpenLink Virtuoso version 08.03.3315 as of Sep 4 2019, on Linux (x86_64-generic-linux-glibc25), Single-Server Edition (378 GB total memory)

Same thing using the LOD Cloud cache instance, where data is a little out of date also:

http://lod.openlinksw.com/fct/facet.vsp?qxml=%3C%3Fxml%20version%3D%221.0%22%20encoding%3D%22UTF-8%22%20%3F%3E%3Cquery%20inference%3D%22%22%20same-as%3D%22%22%20view3%3D%22%22%20s-term%3D%22%22%20c-term%3D%22%22%3E%3Ctext%3EParis%3C%2Ftext%3E%3Cview%20type%3D%22text-d%22%20limit%3D%2220%22%20offset%3D%22%22%20%2F%3E%3C%2Fquery%3E

Config:

OpenLink Virtuoso version 07.20.3224 as of Dec 19 2017, on Linux (i686-generic-linux-glibc212-64), Cluster Edition (4 server processes, 756 GB total memory)

Links

[1] http://wikidata.demo.openlinksw.com/fct

[2] http://wikidata.demo.openlinksw.com/sparql

-- 
Regards,

Kingsley Idehen	      
Founder & CEO 
OpenLink Software   
Home Page: http://www.openlinksw.com
Community Support: https://community.openlinksw.com
Weblogs (Blogs):
Company Blog: https://medium.com/openlink-software-blog
Virtuoso Blog: https://medium.com/virtuoso-blog
Data Access Drivers Blog: https://medium.com/openlink-odbc-jdbc-ado-net-data-access-drivers

Personal Weblogs (Blogs):
Medium Blog: https://medium.com/@kidehen
Legacy Blogs: http://www.openlinksw.com/blog/~kidehen/
              http://kidehen.blogspot.com

Profile Pages:
Pinterest: https://www.pinterest.com/kidehen/
Quora: https://www.quora.com/profile/Kingsley-Uyi-Idehen
Twitter: https://twitter.com/kidehen
Google+: https://plus.google.com/+KingsleyIdehen/about
LinkedIn: http://www.linkedin.com/in/kidehen

Web Identities (WebID):
Personal: http://kingsley.idehen.net/public_home/kidehen/profile.ttl#i
        : http://id.myopenlink.net/DAV/home/KingsleyUyiIdehen/Public/kingsley.ttl#this

SPARQL Query variants:

Wikidata SPARQL Endpoint at http://wikidata.demo.openlinksw.com/sparql :

https://wikidata.demo.openlinksw.com/sparql?default-graph-uri=&query=%0D%0Aselect+%3Fs+%3Fo+%0D%0Awhere+%0D%0A++%7B+%0D%0A++++++graph+%3Fg+%0D%0A++++++%7B+%0D%0A+++++++++%3Fs+rdfs%3Alabel+%3Fo+.%0D%0A+++++++++%3Fo+bif%3Acontains++%27%22Paris%22%27++.%0D%0A+++++++++filter+%28lang%28%3Fo%29+%3D+%22en%22%29%0D%0A++++++++%0D%0A++++++%7D%0D%0A++++%0D%0A++%7D%0D%0A%0D%0Alimit+100+&format=text%2Fhtml&CXML_redir_for_subjs=121&CXML_redir_for_hrefs=&timeout=30000&signal_void=on&signal_unconnected=on&run=+Run+Query+

-- 
Regards,

Kingsley Idehen	      
Founder & CEO 
OpenLink Software   
Home Page: http://www.openlinksw.com
Community Support: https://community.openlinksw.com
Weblogs (Blogs):
Company Blog: https://medium.com/openlink-software-blog
Virtuoso Blog: https://medium.com/virtuoso-blog
Data Access Drivers Blog: https://medium.com/openlink-odbc-jdbc-ado-net-data-access-drivers

Personal Weblogs (Blogs):
Medium Blog: https://medium.com/@kidehen
Legacy Blogs: http://www.openlinksw.com/blog/~kidehen/
              http://kidehen.blogspot.com

Profile Pages:
Pinterest: https://www.pinterest.com/kidehen/
Quora: https://www.quora.com/profile/Kingsley-Uyi-Idehen
Twitter: https://twitter.com/kidehen
Google+: https://plus.google.com/+KingsleyIdehen/about
LinkedIn: http://www.linkedin.com/in/kidehen

Web Identities (WebID):
Personal: http://kingsley.idehen.net/public_home/kidehen/profile.ttl#i
        : http://id.myopenlink.net/DAV/home/KingsleyUyiIdehen/Public/kingsley.ttl#this