Thanks Jona for the explanations. I'm currently discussing with my colleagues in order to find out the best approach. I will come back to you for more brainstorming! Cheers,
Marco On 6/7/12 9:11 PM, Jona Christopher Sahnwaldt wrote: > On Thu, Jun 7, 2012 at 6:43 PM, Marco Fossati<hell.j....@gmail.com> wrote: >> >> >> On 6/7/12 5:46 PM, Pablo Mendes wrote: >>> >>> >>> Perhaps intermediate node mapping? >>> >>> http://mappings.dbpedia.org/index.php/How_to_edit_DBpedia_Mappings#Intermediate_Node_Mapping >> >> No, I don't need to extract multiple values from a single property. >> I'd rather look for something like [1], but I'm not sure I got how it works. >> Citing from [1]: >> >> "The first template infobox on a page defines the type of this page, while >> further infobox templates will be extracted as instances of the >> corresponding types and own URIs." >> >> a) If I understand, it's normal behaviour to build new URIs in case of >> multiple templates in one wiki article. Does that explain those >> double-underscored URIs I mentioned? > > Yes. > >> b) How can I know a priori which is the first template used by a wiki >> article? In other words, how can I choose the non first-grade templates >> where I should define 'correspondingClass' and 'correspondingProperty' >> values? >> >> Intuitively, when multiple template occur in the same wiki article, I'd >> generate a unique entity (i.e. subject) and assign all the mapped types and >> properties to it, no matter where the templates are in the wiki article. > > I think there are different use cases - in other words, different ways > certain templates are normally used. > > In short: sometimes we should use the same subject URI for multiple > templates on a page, sometimes we shouldn't. Sometimes > IntermediateNodeMapping is the way to go, sometimes it isn't. > > We should collect more data, for example about how the {{Bio}} > template is used on it.wikipedia.org, and then decide how we deal with > this. For example, we could add a parameter to TemplateMapping [1] > that says "use the main subject URI for this template". But I feel I > know much too little about the use cases to make an informed decision. > > Let's look at some examples: > > http://mappings.dbpedia.org/server/extraction/it/extract?title=Alfredo_Binda > http://it.wikipedia.org/wiki/Alfredo_Binda > > It's pretty clear that both templates {{Sportivo}} and {{Bio}} are > about the person, and it would make a lot of sense to attach all > extracted properties to the same subject URI. There is some overlap > between the templates, but most info is only in one of them, so we > need to extract both. > > http://mappings.dbpedia.org/server/extraction/it/extract?title=Diabolik_(fumetto) > http://it.wikipedia.org/wiki/Diabolik_(fumetto) > > There are two infoboxes: {{personaggio}} about the fictional > character, {{fumetto e animazione}} about the comic books. In this > case, it wouldn't make sense to attach all properties to one subject > URI. We need two different URIs. > > http://mappings.dbpedia.org/server/extraction/es/extract?title=Jacques_Chirac > http://es.wikipedia.org/wiki/Jacques_Chirac > > In this case, it would be nice to use the same subject URI for both > templates, but the info from {{Ficha de criminal}} is by far not as > important, so I think it's not a big problem that we use a different > URI. > > Cheers, > JC > > [1] http://mappings.dbpedia.org/index.php/Template:TemplateMapping > >> Cheers, >> >> Marco >> >> [1] >> http://mappings.dbpedia.org/index.php/Template:TemplateMapping#Mapping_multiple_templates_from_one_wiki_page >>> >>> >>> Cheers, >>> Pablo >>> >>> On Thu, Jun 7, 2012 at 4:49 PM, Marco Fossati<hell.j....@gmail.com >>> <mailto:hell.j....@gmail.com>> wrote: >>> >>> Hi Jona, >>> >>> Thank you for the quick bug fix. >>> However, I tested the two mentioned mappings and noticed that some >>> strange triple subjects are generated. >>> >>> [1] yields: >>> http://it.dbpedia.org/resource/Alfredo_Binda >>> http://it.dbpedia.org/resource/Alfredo_Binda__lfredo__1 >>> >>> [2] yields: >>> http://it.dbpedia.org/resource/Diabolik_(fumetto) >>> http://it.dbpedia.org/resource/Diabolik_(fumetto)__fumetto__1 >>> >>> Those double-underscored resources are not valid. >>> >>> I tried a random mapping from another language [3] and I got the >>> same issue: >>> http://es.dbpedia.org/resource/Jacques_Chirac >>> http://es.dbpedia.org/resource/Jacques_Chirac__Jacques_Chirac__1 >>> >>> It seems this occurs when there are more template mappings for the same >>> entity. >>> Any clue? >>> Hope this helps. >>> Cheers, >>> >>> Marco >>> >>> [1] >>> >>> >>> http://mappings.dbpedia.org/server/mappings/it/extractionSamples/Mapping_it:Sportivo >>> [2] >>> >>> >>> http://mappings.dbpedia.org/server/mappings/it/extractionSamples/Mapping_it:Fumetto_e_animazione >>> [3] >>> >>> >>> http://mappings.dbpedia.org/server/mappings/es/extractionSamples/Mapping_es:Ficha_de_criminal >>> >>> >>> On 6/7/12 3:09 PM, Jona Christopher Sahnwaldt wrote: >>> > Hi Marco, >>> > >>> > thanks for the report! That bug is now fixed. Please try again. >>> > >>> > JC >>> > >>> > On Wed, Jun 6, 2012 at 5:58 PM, Marco >>> Fossati<hell.j....@gmail.com<mailto:hell.j....@gmail.com>> wrote: >>> >>> >> Hi everyone, >>> >> >>> >> I'm trying to test some Italian mappings [1] [2], but it fails >>> with a null >>> >> pointer exception. >>> >> The stacktrace is attached. >>> >> Hope this helps. >>> >> Cheers, >>> >> >>> >> Marco >>> >> >>> >> [1] >>> >> >>> >>> >>> http://mappings.dbpedia.org/server/mappings/it/extractionSamples/Mapping_it:Sportivo >>> >> [2] >>> >> >>> >>> >>> http://mappings.dbpedia.org/server/mappings/it/extractionSamples/Mapping_it:Fumetto_e_animazione >>> >> >>> >> >>> >>> >>> ------------------------------------------------------------------------------ >>> >> Live Security Virtual Conference >>> >> Exclusive live event will cover all the ways today's security and >>> >> threat landscape has changed and how IT managers can respond. >>> Discussions >>> >> will include endpoint security, mobile security and the latest >>> in malware >>> >> threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ >>> >> _______________________________________________ >>> >> Dbpedia-discussion mailing list >>> >> Dbpedia-discussion@lists.sourceforge.net >>> <mailto:Dbpedia-discussion@lists.sourceforge.net> >>> >>> >> https://lists.sourceforge.net/lists/listinfo/dbpedia-discussion >>> >> >>> >>> >>> >>> ------------------------------------------------------------------------------ >>> Live Security Virtual Conference >>> Exclusive live event will cover all the ways today's security and >>> threat landscape has changed and how IT managers can respond. >>> Discussions >>> will include endpoint security, mobile security and the latest in >>> malware >>> threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ >>> _______________________________________________ >>> Dbpedia-discussion mailing list >>> Dbpedia-discussion@lists.sourceforge.net >>> <mailto:Dbpedia-discussion@lists.sourceforge.net> >>> https://lists.sourceforge.net/lists/listinfo/dbpedia-discussion >>> >>> >> ------------------------------------------------------------------------------ Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. 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