I've downloaded the snapshot and loaded the contents of kbpe

I've seen it also on the website, here on the README is <p dir="auto"

Hi,Thanks! Deions are now updated. <div class="email-quote

Question about actual contents about kbpedia HOT 10 CLOSED

kuzeko commented on June 8, 2024

Question about actual contents

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mkbergman commented on June 8, 2024 2

Maybe there is a more efficient way to do it, but I submitted this query to https://query.wikidata.org [1] : PREFIX wd: <http://www.wikidata.org/entity/> PREFIX wdt: <http://www.wikidata.org/prop/direct/> SELECT ?class (COUNT(?s) AS ?instance) WHERE { ?s wdt:P31 ?class. } GROUP BY ?class And then downloaded the results file, which I then did a vertical lookup with the actual Q ids in the system to get the final 32 M count. BTW, there are about 55 M items produced from this query, but only 44 M of which are actual external items (excluding internal Wikimedia counts and scholarly articles). Thanks, Mike [1] https://query.wikidata.org/#PREFIX%20wd%3A%20%3Chttp%3A%2F%2Fwww.wikidata.org%2Fentity%2F%3E%0APREFIX%20wdt%3A%20%3Chttp%3A%2F%2Fwww.wikidata.org%2Fprop%2Fdirect%2F%3E%0A%0A%0ASELECT%20%3Fclass%20%28COUNT%28%3Fs%29%20AS%20%3Finstance%29%20WHERE%20%7B%20%3Fs%20wdt%3AP31%20%3Fclass.%20%7D%0AGROUP%20BY%20%3Fclass

On 2/19/2019 10:17 AM, M. Lissandrini wrote: Thanks a lot. Do you have somewhere the query I could use to reproduce the actual count of mapped Q items (the 32M number) Thanks — You are receiving this because you modified the open/close state. Reply to this email directly, view it on GitHub <#3 (comment)>, or mute the thread <https://github.com/notifications/unsubscribe-auth/ABJbYD-cQYRaHy6n45U7RwBQIGDJ6c_wks5vPCObgaJpZM4a_oGW>.

…

__________________________________________ Michael K. Bergman Cognonto Corporation 319.621.5225 skype:michaelkbergman http://cognonto.com http://mkbergman.com http://www.linkedin.com/in/mkbergman

__________________________________________

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kuzeko commented on June 8, 2024 1

I've seen it also on the website, here on the README is

KBpedia, [...], includes 55,000 reference concepts, about 30 million entities, and 5,000 relations and properties [...]

I think it could help to clearly distinguish between what it includes what it can be de-referenced to in other KGs.

To be perfectly clear, I see that KBpedia actually includes references to real entities (e.g., Barack Obama) so this is why I though that maybe my import was partial.

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mkbergman commented on June 8, 2024

Hi,

I think your counts look about right, though I do not have that file currently loaded on my local machine. The key point, however, is in relation to the 30 M items. KBpedia links to these items through the Q items on Wikidata. Those mappings are shown in the KBpedia linkages directory here on GitHub, as well as can be seen by the Entities browse on the KBpedia knowledge graph. Here is an example for Automobile: http://kbpedia.org/entity/browse/?class=http://kbpedia.org/kko/rc/Automobile&offset=0 (this shows DBpedia URIs)

We chose not to reproduce Wikidata ourselves in the KBpedia distribution, since it is simple to get the Q items directly from the main Wikidata site (https://www.wikidata.org) or from the Wikidata SPARQL endpoint (https://query.wikidata.org). The actual count of mapped Q items is 32 M for KBpedia v 200.

Mike

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kuzeko commented on June 8, 2024

Thanks for the reply,
so, if I understand this correctly, the point would be to query Wikidata for instances of classes by following the owl:equivalentClass in the linkage directory?

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mkbergman commented on June 8, 2024

Yes, in fact, for a given KBpedia RC, you may get instances from Wikidata, DBpedia, GeoNames and schema.org following the same linkages and method. For many of our specific projects, we also use the rdfs:subClassOf predicate as well. So, we do various things to query or slice-and-dice the KBpedia graph, and then used the mapped linkages to get the instances necessary for, say, a supervised machine learner.

On 2/18/2019 2:32 PM, M. Lissandrini wrote: Thanks for the reply, so, if I understand this correctly, the point would be to query Wikidata for instances of classes by following the |owl:equivalentClass| in the linkage directory? — You are receiving this because you modified the open/close state. Reply to this email directly, view it on GitHub <#3 (comment)>, or mute the thread <https://github.com/notifications/unsubscribe-auth/ABJbYEgEiEGfL2_NJfUsmJchbOYG0PZtks5vOw3egaJpZM4a_oGW>.

…

__________________________________________ Michael K. Bergman Cognonto Corporation 319.621.5225 skype:michaelkbergman http://cognonto.com http://mkbergman.com http://www.linkedin.com/in/mkbergman

__________________________________________

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kuzeko commented on June 8, 2024

Ok I see, this 30M sentence in the readme was really misleading me.
Thanks for the clarification.

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mkbergman commented on June 8, 2024

If you point me to the exact reference, I will update the description to make it more accurate.

On 2/18/2019 4:09 PM, M. Lissandrini wrote: Ok I see, this 30M sentence in the readme was really misleading me. Thanks for the clarification. — You are receiving this because you modified the open/close state. Reply to this email directly, view it on GitHub <#3 (comment)>, or mute the thread <https://github.com/notifications/unsubscribe-auth/ABJbYLTfLCaezKdAbhonlP_usTKGBqicks5vOySygaJpZM4a_oGW>.

…

__________________________________________ Michael K. Bergman Cognonto Corporation 319.621.5225 skype:michaelkbergman http://cognonto.com http://mkbergman.com http://www.linkedin.com/in/mkbergman

__________________________________________

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mkbergman commented on June 8, 2024

Hi, Thanks! Descriptions are now updated.

On 2/18/2019 4:41 PM, M. Lissandrini wrote: I've seen it also on the website, here on the README is KBpedia, [...], includes 55,000 reference concepts, about 30 million entities, and 5,000 relations and properties [...] I think it could help to clearly distinguish between what it /includes/ what it can be /de-referenced/ to in other KGs. To be perfectly clear, I see that KBpedia actually includes references to real entities (e.g., Barack Obama) so this is why I though that maybe my import was partial. — You are receiving this because you modified the open/close state. Reply to this email directly, view it on GitHub <#3 (comment)>, or mute the thread <https://github.com/notifications/unsubscribe-auth/ABJbYBDh8otsPWkTbHzFVDUXJsGKzRMCks5vOywngaJpZM4a_oGW>.

…

__________________________________________ Michael K. Bergman Cognonto Corporation 319.621.5225 skype:michaelkbergman http://cognonto.com http://mkbergman.com http://www.linkedin.com/in/mkbergman

__________________________________________

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kuzeko commented on June 8, 2024

Thanks a lot.
Do you have somewhere the query I could use to reproduce the actual count of mapped Q items
(the 32M number)
Thanks

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kuzeko commented on June 8, 2024

This is great!
Thanks a lot

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