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
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*Thomas Francart* -*SPARNA* Web de _données_ | Architecture de l'_information_ | Accès aux _connaissances_ blog : blog.sparna.fr http://blog.sparna.fr, site : sparna.fr http://sparna.fr, linkedin : fr.linkedin.com/in/thomasfrancart https://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%3... 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 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Same thing using the LOD Cloud cache instance, where data is a little out of date also: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...
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