Re: [Wikidata] Announcing Wikidata Taxonomy Browser (beta)

Hi! > It should be a basic requirement of any SPARQL engine that it should be > able to handle path queries that contain cycles. So I did some simple checks, and on simple examples Blazegraph handles cycles just fine. However, on more complex queries, the cycles seem to be causing trouble. I

Re: [Wikidata] Announcing Wikidata Taxonomy Browser (beta)

On 27/10/2015 08:42, Stas Malyshev wrote: Hi! It should be a basic requirement of any SPARQL engine that it should be able to handle path queries that contain cycles. So I did some simple checks, and on simple examples Blazegraph handles cycles just fine. However, on more complex queries,

Re: [Wikidata] Announcing Wikidata Taxonomy Browser (beta)

On 25.10.2015 02:18, Kingsley Idehen wrote: On 10/24/15 10:51 AM, Markus Krötzsch wrote: On 24.10.2015 12:29, Martynas Jusevičius wrote: I don't see how cycle queries can be a requirement for SPARQL engines if they are not part of SPARQL spec? The closest thing you have is property paths. We

Re: [Wikidata] Announcing Wikidata Taxonomy Browser (beta)

On 25/10/2015 09:31, Markus Krötzsch wrote: On 25.10.2015 02:18, Kingsley Idehen wrote: On 10/24/15 10:51 AM, Markus Krötzsch wrote: We were talking about *cyclic data* not cyclic queries (which you can also create easily using BGPs, but that's unrelated here). Apparently, BlazeGraph has

Re: [Wikidata] Announcing Wikidata Taxonomy Browser (beta)

The standard algorithm for a path search is very simple: Keep adding a new generation of links, until the new link brings in no node not already seen. This works for graphs of equivalence relations, it works for directed acyclic graphs. It's not the /graphs/ that are causing the problem

Re: [Wikidata] Announcing Wikidata Taxonomy Browser (beta)

Am 25.10.2015 um 19:20 schrieb James Heald: > It's not the /graphs/ that are causing the problem here, because Blazegraph > can > handle either of them by themself and give the right answer. That's an interesting observation, would you add your examples to

Re: [Wikidata] Announcing Wikidata Taxonomy Browser (beta)

Am 25.10.2015 um 19:50 schrieb Daniel Kinzler: > Am 25.10.2015 um 19:20 schrieb James Heald: >> It's not the /graphs/ that are causing the problem here, because Blazegraph >> can >> handle either of them by themself and give the right answer. > > That's an interesting observation, would you add

Re: [Wikidata] Announcing Wikidata Taxonomy Browser (beta)

On 24.10.2015 12:29, Martynas Jusevičius wrote: I don't see how cycle queries can be a requirement for SPARQL engines if they are not part of SPARQL spec? The closest thing you have is property paths. We were talking about *cyclic data* not cyclic queries (which you can also create easily

Re: [Wikidata] Announcing Wikidata Taxonomy Browser (beta)

On 10/24/15 10:51 AM, Markus Krötzsch wrote: > On 24.10.2015 12:29, Martynas Jusevičius wrote: >> I don't see how cycle queries can be a requirement for SPARQL engines if >> they are not part of SPARQL spec? The closest thing you have is property >> paths. > > We were talking about *cyclic data*

Re: [Wikidata] Announcing Wikidata Taxonomy Browser (beta)

On 24/10/2015 00:50, Stas Malyshev wrote: Hi! least one Wikipedia) are considered to refer to equivalent classes on Wikidata, which could be expressed by a small subclass-of cycle. For We can do it, but I'd rather we didn't. The reason is that it would require engine that queries such data

Re: [Wikidata] Announcing Wikidata Taxonomy Browser (beta)

> Blazegraph for example looks like does not handle them out of the box As Wikidata is an Open Wiki, I think we can't avoid the query engine having to deal with cycles from time to times. I can't imagine the Wikidata query engine having troubles with cycles. It must be robust. 2015-10-24 1:50

Re: [Wikidata] Announcing Wikidata Taxonomy Browser (beta)

On 24.10.2015 09:36, James Heald wrote: On 24/10/2015 00:50, Stas Malyshev wrote: Hi! least one Wikipedia) are considered to refer to equivalent classes on Wikidata, which could be expressed by a small subclass-of cycle. For We can do it, but I'd rather we didn't. The reason is that it

Re: [Wikidata] Announcing Wikidata Taxonomy Browser (beta)

Hoi, The problem with tools like this is that they get a moment attention. Particularly when they are stand alone, not integrated, they will lose interest. Would it be an option to host this tool on Labs? Thanks, GerardM On 22 October 2015 at 21:27, Markus Kroetzsch <

Re: [Wikidata] Announcing Wikidata Taxonomy Browser (beta)

On Thu, Oct 22, 2015 at 5:31 PM, Markus Kroetzsch wrote: > Hi all, > > I am happy to announce a new tool [1], written by Serge Stratan, which > allows you to browse the taxonomy (subclass of & instance of relations) > between Wikidata's most important class items.

Re: [Wikidata] Announcing Wikidata Taxonomy Browser (beta)

Integration is the purpose of templates like Q' with Reasonator or P' and Item Documentation , I don't know if they are actually use. Templates like Query have a limited success however 2015-10-23 11:16 GMT+02:00 Gerard Meijssen : > Hoi, > The problem with tools like

Re: [Wikidata] Announcing Wikidata Taxonomy Browser (beta)

On 23.10.2015 11:16, Gerard Meijssen wrote: Hoi, The problem with tools like this is that they get a moment attention. Particularly when they are stand alone, not integrated, they will lose interest. Problems, problems, ... Would it be an option to host this tool on Labs? Yes, this is

Re: [Wikidata] Announcing Wikidata Taxonomy Browser (beta)

Hi! > least one Wikipedia) are considered to refer to equivalent classes on > Wikidata, which could be expressed by a small subclass-of cycle. For We can do it, but I'd rather we didn't. The reason is that it would require engine that queries such data (e.g. SPARQL engine) to be comfortable with

Re: [Wikidata] Announcing Wikidata Taxonomy Browser (beta)

I’m constantly getting 500 errors. > On Oct 22, 2015, at 10:25 AM, Thomas Douillard > wrote: > > Great tool ! The error detection is precious ! > > 2015-10-22 17:31 GMT+02:00 Markus Kroetzsch

Re: [Wikidata] Announcing Wikidata Taxonomy Browser (beta)

I am having the same kinds of 500 problems. Bitbucket is generally suffering today: http://status.bitbucket.org On Thu, Oct 22, 2015 at 12:27 PM, Markus Kroetzsch < markus.kroetz...@tu-dresden.de> wrote: > On 22.10.2015 19:29, Dario Taraborelli wrote: > >> I’m constantly getting 500 errors. >>

Re: [Wikidata] Announcing Wikidata Taxonomy Browser (beta)

On 22.10.2015 19:29, Dario Taraborelli wrote: I’m constantly getting 500 errors. I also observed short outages in the past, and I sometimes had to run a request twice to get an answer. It seems that the hosting on bitbucket is not very reliable. At the moment, this is still a first preview

Re: [Wikidata] Announcing Wikidata Taxonomy Browser (beta)

Works for me now. This is fantastic. :) Please consider adding it to Hay's tools directory, so more people can discover it. https://tools.wmflabs.org/hay/directory/?search=taxonomy#/search/taxonomy A. On Thu, Oct 22, 2015 at 10:29 AM, Dario Taraborelli < dtarabore...@wikimedia.org> wrote:

[Wikidata] Announcing Wikidata Taxonomy Browser (beta)

Hi all, I am happy to announce a new tool [1], written by Serge Stratan, which allows you to browse the taxonomy (subclass of & instance of relations) between Wikidata's most important class items. For example, here is the Wikidata taxonomy for Pizza (discussed recently on this list):