Greetings. It seems to me that the UDC and the dbpedia OWL ontology are rather diferent kinds of models. Like the Unesco (http://skos.um.es/unesco6/) glossary, UDC it a taxonomy of knowledge fields (a very good one indeed) and not a well defined ontology. In most places, the branches of the fields and not really their subclasses but their parts, forming a complex mereology. Please remember the broader-narrower relation in SKOS is not transitive and is not meant to mean subclassing as we do with owl:Class and rdfs:subClassOf. Common language may be misleading: a cardiologist (a role, never a subclass of person) is a specialization of doctor (Arzt, medécin, a more general role), but Cardiology is a branch (part--of), not a specialization, of Medicine.
Maybe Wikipedia would gain in aligning its articles with their classification system, but I do not see how it would help dbpedia. Also, the level of detail provided would be unbearable. Since dbpedia information is extracted from a BOK that is written without knowledge of dbpedia classes, its structure should be kept as simple as possible to maintain logical consistency. Although I think some very basic important distinctions are missing (e.g. perdurant vs. endurant, geopolitical entity vs. spatial place), the full use of a base ontology like DOLCE would be equally problematic because of its inherent complexity. Best regards, ========================= ==================== Marcelo Jaccoud Amaral De: "Kuys, Gerard" <gerard.k...@ordina.nl> Para: Vladimir Alexiev <vladimir.alex...@ontotext.com>, "dbpedia-discussion@lists.sourceforge.net" <dbpedia-discussion@lists.sourceforge.net>, 'Monika Solanki' <msolanki.maili...@gmail.com>, Data: 2016-01-06 06:39 Assunto: Re: [Dbpedia-discussion] Aligning DBpedia ontology with the UDC Hi Vladimir, Thanks for your remarks. I'll address them in a couple of days. Kind regards, Gerard _________________________ _______________ Van: Vladimir Alexiev <vladimir.alex...@ontotext.com> Verzonden: dinsdag 5 januari 2016 11:38 Aan: Kuys, Gerard; dbpedia-discussion@lists.sourceforge.net; 'Monika Solanki' Onderwerp: RE: Aligning DBpedia ontology with the UDC I looked at http://www.udcsummary.info/ and still don't understand your proposal. 1. UDC allows you to express e.g. this: 159.96 Special mental states and processes 61=030.161.1=133.1 Medical documents translated from Russian into French What DBpedia classes would this correspond to? 2. UDC has areas of study, but not specific objects. E.g. you have 737 Numismatics But don't have "coin" vs "hoard" vs e.g. "medal" 3. You have a huge number of classes that don't correspond to objects, eg 581.1 Plant physiology 581.8 Plant histology 581.5 Habits of plants. Plant behaviour. Plant ecology. Plant ethology. The plant and its environment. Bionomics of plan These would just add parasitic weight to a mapping. The different kinds of plants are under 582.32/.998 Plantae (plants) (I guess the complete Tree of Life can be found in UDC, as it can in Wikidata project Taxonomy) 4. You have a good classification of sports under 79 Recreation. Entertainment. Games. Sport And more specifically under 796 Sport. Games. Physical exercises But afaik, you don't have a class SportsTeam, let alone specifics such as BaseballTeam vs SoccerTeam As you say, UDC is for classification of works, most of all on paper (books, articles, papers). IMHO it's not for classification of objects. Disclaimer Dit bericht met eventuele bijlagen is vertrouwelijk en uitsluitend bestemd voor de geadresseerde. Indien u niet de bedoelde ontvanger bent, wordt u verzocht de afzender te waarschuwen en dit bericht met eventuele bijlagen direct te verwijderen en/of te vernietigen. Het is niet toegestaan dit bericht en eventuele bijlagen te vermenigvuldigen, door te sturen, openbaar te maken, op te slaan of op andere wijze te gebruiken. Ordina N.V. en/of haar groepsmaatschappijen accepteren geen verantwoordelijkheid of aansprakelijkheid voor schade die voortvloeit uit de inhoud en/of de verzending van dit bericht. This e-mail and any attachments are confidential and are solely intended for the addressee. 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