Hi all, it seems, that thumbnail-URLs are not completely extracted from infoboxes. I am especially interested in thumbnails of movies. If I have a look at the wiki-page for "The Matrix" for example, I definitely can see a thumbnail. Where is the dbpedia property for that?
best regards, Sebastian Am 18.01.2011 17:27, schrieb Max Jakob: > Hi Roberto, > > this is indeed odd. It has probably something to do with changes in > the parser, although not specifically the ones that were stated with > the release. > > But note that the mentioned data is in the /property/ (dbpprop:) > namespace and was extracted by the Raw Infobox Extractor. In general, > it has a quite simple way of extracting data. > > Our focus was and is to improve the data in the /ontology/ namespace > that is based on mappings. Unfortunately, there has not been a mapping > for the Infobox_programming_language at the time of the extraction. I > have just added a mapping for that. In the next release, the expected > data will be there with the predicate dbpedia-owl:influencedBy. > Please see these examples for the current extraction behavior for the > mapping-based properties: > http://mappings.dbpedia.org/server/extraction/en/extract?title=PHP > http://mappings.dbpedia.org/server/extraction/en/extract?title=Python_%28programming_language%29 > > Nevertheless, we are of course going to fix this error in the > extraction code. But having mappings for more infoboxes is definitely > a great way to increase high-quality coverage. > > Best regards, > Max > > On Tue, Jan 18, 2011 at 12:00, Roberto Mirizzi > <[email protected]> wrote: >> Hi all, >> and congratulations for the new release and all the improvements. >> Anyway, I've some remarks against the "Improved parsing coverage". :-) >> Looking at the new dataset, I've found an issue that in the previous >> dataset did not exist. >> For example, if you look at this page: >> http://dbpedia.org/page/PHP >> you will find that the object of the property "dbpprop:influencedBy" is >> a string "C, Perl, Java, C++, Tcl", while in the previous version of the >> dataset (I've loaded it on my local machine), there are five distinct >> triples having as object, respectively: >> "dbpedia:C_(programming_language)", >> "dbpedia:Java_(programming_language)", "dbpedia:Perl", "dbpedia:Tcl" and >> "dbpedia:C++_(programming_language)". >> I think this problem should be fixed, specially because a corresponding >> "ontology property" still does not exist for such properties. >> >> >> All the best, >> roberto >> >> >> Il 17/01/2011 14:10, Chris Bizer ha scritto: >>> Hi all, >>> >>> we are happy to announce the release of DBpedia 3.6. The new release is >>> based on Wikipedia dumps dating from October/November 2010. >>> >>> The new DBpedia dataset describes more than 3.5 million things, of which >>> 1.67 million are classified in a consistent ontology, including 364,000 >>> persons, 462,000 places, 99,000 music albums, 54,000 films, 16,500 video >>> games, 148,000 organizations, 148,000 species and 5,200 diseases. >>> >>> The DBpedia dataset features labels and abstracts for 3.5 million things in >>> up to 97 different languages; 1,850,000 links to images and 5,900,000 links >>> to external web pages; 6,500,000 external links into other RDF datasets, and >>> 632,000 Wikipedia categories. >>> >>> The dataset consists of 672 million pieces of information (RDF triples) out >>> of which 286 million were extracted from the English edition of Wikipedia >>> and 386 million were extracted from other language editions and links to >>> external datasets. >>> >>> Along with the release of the new datasets, we are happy to announce the >>> initial release of the DBpedia MappingTool >>> (http://mappings.dbpedia.org/index.php/MappingTool): a graphical user >>> interface to support the community in creating and editing mappings as well >>> as the ontology. >>> >>> The new release provides the following improvements and changes compared to >>> the DBpedia 3.5.1 release: >>> >>> 1. Improved DBpedia Ontology as well as improved Infobox mappings using >>> http://mappings.dbpedia.org/. >>> >>> Furthermore, there are now also mappings in languages other than English. >>> These improvements are largely due to collective work by the community. >>> There are 13.8 million RDF statements based on mappings (11.1 million in >>> version 3.5.1). All this data is in the /ontology/ namespace. Note that this >>> data is of much higher quality than the Raw Infobox data in the /property/ >>> namespace. >>> >>> Statistics of the mappings wiki on the date of release 3.6: >>> >>> + Mappings: >>> + English: 315 Infobox mappings (covers 1124 templates including >>> redirects) >>> + Greek: 137 Infobox mappings (covers 192 templates including >>> redirects) >>> + Hungarian: 111 Infobox mappings (covers 151 templates including >>> redirects) >>> + Croatian: 36 Infobox mappings (covers 67 templates including >>> redirects) >>> + German: 9 Infobox mappings >>> + Slovenian: 4 Infobox mappings >>> + Ontology: >>> + 272 classes >>> + Properties: >>> + 629 object properties >>> + 706 datatype properties (they are all in the /datatype/ namespace) >>> >>> 2. Some commonly used property names changed. >>> >>> + Please see http://dbpedia.org/ChangeLog and >>> http://dbpedia.org/Datasets/Properties to know which relations changed and >>> update your applications accordingly! >>> >>> 3. New Datatypes for increased quality in mapping-based properties >>> >>> + xsd:positiveInteger, xsd:nonNegativeInteger, xsd:nonPositiveInteger, >>> xsd:negativeInteger >>> >>> 4. Improved parsing coverage. >>> >>> + Parsing of lists of elements in Infobox property values that improves the >>> completeness of extracted facts. >>> + Method to deal with missing repeated links in Infoboxes that do appear >>> somewhere else on the page. >>> + Flag templates are parsed. >>> + Various improvements on internationalization. >>> >>> 5. Improved recognition of >>> >>> + Wikipedia namespace identifiers. >>> + Wikipedia language codes. >>> + Category hierarchies. >>> >>> 6. Disambiguation links for acronyms (all upper-case title) are now >>> extracted (for example, Kilobyte and Knowledge_base for "KB"): >>> >>> + Wikilinks consisting of multiple words: If the starting letters of the >>> words appear in correct order (with possible gaps) and cover all acronym >>> letters. >>> + Wikilinks consisting of a single word: If the case-insensitive longest >>> common subsequence with the acronym is equal to the acronym. >>> >>> 7. Encoding (bugfixes): >>> >>> + The new datasets support the complete range of Unicode code points (up to >>> 0x10ffff). 16-bit code points start with '\u', code points larger than >>> 16-bits start with '\U'. >>> + Commas and ampersands do not get encoded anymore in URIs. Please see >>> http://dbpedia.org/URIencoding for an explanation regarding the DBpedia URI >>> encoding scheme. >>> >>> 8. Extended Datasets: >>> >>> + Thanks to Johannes Hoffart (Max-Planck-Institut für Informatik) for >>> contributing links to YAGO2. >>> + Freebase links have been updated. They now refer to mids >>> (http://wiki.freebase.com/wiki/Machine_ID) because guids have been >>> deprecated. >>> >>> You can download the new DBpedia dataset from http://dbpedia.org/Downloads36 >>> >>> As usual, the dataset is also available as Linked Data and via the DBpedia >>> SPARQL endpoint at http://dbpedia.org/sparql >>> >>> Lots of thanks to: >>> >>> + All editors that contributed to the DBpedia ontology mappings via the >>> Mappings Wiki. >>> + Max Jakob (Freie Universität Berlin, Germany) for improving the DBpedia >>> extraction framework and for extracting the new datasets. >>> + Robert Isele and Anja Jentzsch (both Freie Universität Berlin, Germany) >>> for helping Max with their expertise on the extraction framework. >>> + Paul Kreis (Freie Universität Berlin, Germany) for analyzing the DBpedia >>> data of the previous release and suggesting ways to increase quality and >>> quantity. Some results of his work were implemented in this release. >>> + Dimitris Kontokostas (Aristotle University of Thessaloniki, Greece), Jimmy >>> O'Regan (Eolaistriu Technologies, Ireland), José Paulo Leal (University of >>> Porto, Portugal) for providing patches to improve the extraction framework. >>> + Jens Lehmann and Sören Auer (both Universität Leipzig, Germany) for >>> providing the new dataset via the DBpedia download server at Universität >>> Leipzig. >>> + Kingsley Idehen and Mitko Iliev (both OpenLink Software) for loading the >>> dataset into the Virtuoso instance that serves the Linked Data view and >>> SPARQL endpoint. OpenLink Software (http://www.openlinksw.com/) altogether >>> for providing the server infrastructure for DBpedia. >>> >>> The work on the new release was financially supported by: >>> >>> + Neofonie GmbH, a Berlin-based company offering leading technologies in the >>> area of Web search, social media and mobile applications >>> (http://www.neofonie.de/). >>> + The European Commission through the project LOD2 - Creating Knowledge out >>> of Linked Data (http://lod2.eu/). >>> + Vulcan Inc. as part of its Project Halo (http://www.projecthalo.com/). >>> Vulcan Inc. creates and advances a variety of world-class endeavors and high >>> impact initiatives that change and improve the way we live, learn, do >>> business (http://www.vulcan.com/). >>> >>> More information about DBpedia is found at http://dbpedia.org/About >>> >>> Have fun with the new dataset! >>> >>> The whole DBpedia team also congratulates Wikipedia to its 10th Birthday >>> which was this weekend! >>> >>> Cheers, >>> >>> Chris Bizer >>> >>> >>> -- >>> Prof. Dr. Christian Bizer >>> Web-based Systems Group >>> Freie Universität Berlin >>> +49 30 838 55509 >>> http://www.bizer.de >>> [email protected] >>> >>> >>> >>> ------------------------------------------------------------------------------ >>> Protect Your Site and Customers from Malware Attacks >>> Learn about various malware tactics and how to avoid them. Understand >>> malware threats, the impact they can have on your business, and how you >>> can protect your company and customers by using code signing. >>> http://p.sf.net/sfu/oracle-sfdevnl >>> _______________________________________________ >>> Dbpedia-discussion mailing list >>> [email protected] >>> https://lists.sourceforge.net/lists/listinfo/dbpedia-discussion >> -- >> Roberto Mirizzi >> Information System Lab >> Politecnico di Bari (Italy) >> http://sisinflab.poliba.it/mirizzi >> >> >> ------------------------------------------------------------------------------ >> Protect Your Site and Customers from Malware Attacks >> Learn about various malware tactics and how to avoid them. Understand >> malware threats, the impact they can have on your business, and how you >> can protect your company and customers by using code signing. >> http://p.sf.net/sfu/oracle-sfdevnl >> _______________________________________________ >> Dbpedia-discussion mailing list >> [email protected] >> https://lists.sourceforge.net/lists/listinfo/dbpedia-discussion >> > ------------------------------------------------------------------------------ > Protect Your Site and Customers from Malware Attacks > Learn about various malware tactics and how to avoid them. Understand > malware threats, the impact they can have on your business, and how you > can protect your company and customers by using code signing. > http://p.sf.net/sfu/oracle-sfdevnl > _______________________________________________ > Dbpedia-discussion mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/dbpedia-discussion ------------------------------------------------------------------------------ Protect Your Site and Customers from Malware Attacks Learn about various malware tactics and how to avoid them. Understand malware threats, the impact they can have on your business, and how you can protect your company and customers by using code signing. http://p.sf.net/sfu/oracle-sfdevnl _______________________________________________ Dbpedia-discussion mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/dbpedia-discussion
