On 1/11/11 14:18 , Roberto Mirizzi wrote: > Il 11/01/2011 13.54, Kingsley Idehen ha scritto: >> There have been other lookup services for DBpedia for a long time. >> >> Example: >> >> 1. Goto http://dbpedia.org/fct >> 2. Goto to "Labels" tab >> 3. Start typing e.g. Jav -- you will get a drop down. > I had tried it before writing ("even if there is no "Labels tab", but > probably you meant "URI Lookup (by Label)"). Often I obtain a 500 > Internal Server Error when the client try to get a page like this one: > http://dbpedia.org/services/rdf/iriautocomplete.get?lbl=jav&&oatSecurityCookie=8818198648877179 > Moreover it is not very responsive: it can't be used for autocomplete. I > liked the old DBpedia lookup service because it was really fast. > >> Alternatively: >> >> 1. Use the default tab >> 2. Type in Text patern >> 3. Filter by Type or other Properties using the Navigation DIV entries >> -- once your happy click on EntityN (a link) from the triple pattern >> section (where pattern is constructed based on your interaction). > With the default tab if I type "jav" I obtain only results that contain > "JAV" and not "Java". So again, if I'm using it correctly, I think it > can't be used for autocomplete. > The /fct engine main page gives you 3 different starting points to the data set:
First tab does a full-text search on an an index of all literal O values, using the Virtuoso Full-Text index. It makes a simplified full-text CONTAINS queries, with all words connected with AND. The partial world match in CONTAINS predicate is done with a wildcard, as in [1] The second tab does an autocomplete, from start of word, on an index of predicate values commonly used as labels, generated using query with a simple subproperty inference [2] The third tab is an autocompleting search of URIs in the dataset You can see the actual SPARQL query run by the FCT UI by using "View Query as SPARQL" link on the result page. [1] http://docs.openlinksw.com/virtuoso/queryingftcols.html#containspredicate [2] virtrdf:label schema @prefix foaf: <http://xmlns.com/foaf/0.1/> . @prefix dc: <http://purl.org/dc/elements/1.1/> . @prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> . @prefix virtrdf: <http://www.openlinksw.com/schemas/virtrdf#> . @prefix fbase: <http://rdf.freebase.com/ns/type.object.> . @prefix skos: <http://www.w3.org/2008/05/skos#> . @prefix bibo: <http://purl.org/ontology/bibo/> . @prefix gr: <http://purl.org/goodrelations/v1#> . @prefix owl: <http://www.w3.org/2002/07/owl#> . @prefix geo: <http://www.w3.org/2003/01/geo/wgs84_pos#> . @prefix og: <http://opengraphprotocol.org/schema/> . dc:title rdfs:subPropertyOf virtrdf:label . rdfs:label rdfs:subPropertyOf virtrdf:label . fbase:name rdfs:subPropertyOf virtrdf:label . foaf:name rdfs:subPropertyOf virtrdf:label . <http://s.opencalais.com/1/pred/name> rdfs:subPropertyOf virtrdf:label . foaf:nick rdfs:subPropertyOf virtrdf:label . <http://www.w3.org/2004/02/skos/core#prefLabel> rdfs:subPropertyOf virtrdf:label . skos:prefLabel rdfs:subPropertyOf virtrdf:label . <http://www.geonames.org/ontology#name> rdfs:subPropertyOf virtrdf:label . <http://purl.org/dc/terms/title> rdfs:subPropertyOf virtrdf:label . foaf:accountName rdfs:subPropertyOf virtrdf:label . bibo:shortTitle rdfs:subPropertyOf virtrdf:label . <http://s.opencalais.com/1/pred/name> rdfs:subPropertyOf foaf:name . <http://s.opencalais.com/1/type/er/Company> rdfs:subClassOf gr:BusinessEntity . gr:BusinessEntity rdfs:subClassOf foaf:Organization . <http://dbpedia.org/ontology/Company> rdfs:subClassOf gr:BusinessEntity . <http://www.w3.org/2002/12/cal/ical#summary> rdfs:subPropertyOf rdfs:label . <http://usefulinc.com/ns/doap#name> rdfs:subPropertyOf rdfs:label . <http://linkedopencommerce.com/schemas/icecat/v1/hasModelName> rdfs:subPropertyOf virtrdf:label . <http://aims.fao.org/aos/geopolitical.owl#nameListEN> rdfs:subPropertyOf rdfs:label . <http://aims.fao.org/aos/geopolitical.owl#hasMinLatitude> rdfs:subPropertyOf geo:lat . <http://aims.fao.org/aos/geopolitical.owl#hasMinLongitude> rdfs:subPropertyOf geo:long . og:latitude rdfs:subPropertyOf geo:lat . og:longitude rdfs:subPropertyOf geo:long . <http://uberblic.org/ontology/latitude> rdfs:subPropertyOf geo:lat . <http://uberblic.org/ontology/longitude> rdfs:subPropertyOf geo:long . <http://linkedopencommerce.com/schemas/icecat/v1/hasCategory> rdfs:subPropertyOf rdf:type . <http://poolparty.punkt.at/demozone/ont#title> rdfs:subPropertyOf virtrdf:label . > All the best, > roberto > >> The game here is simply this: disambiguation en route to faceted lookups >> i.e., Precision Find at serious scale. You can even achieve all of this >> via a Web Service [1]. >> >> Links: >> >> 1. >> http://virtuoso.openlinksw.com/dataspace/dav/wiki/Main/VirtuosoFacetsWebService >> >> >> Kingsley >>>> Il 10/01/11 15:11, Stephen Betts ha scritto: >>>>> Hello, >>>>> >>>>> We've been using the Look-up service at lookup.dbpedia.org for a while, >>>>> and >>>>> just seen that it seems to be down at the moment. >>>>> >>>>> Does anyone know whether this is temporary or a permanent outage? >>>>> (Apologies if this was mentioned on-list before and I missed it). >>>>> >>>>> Thanks very much, >>>>> >>>>> Stephen. >>>>> >>>>> >>>> Matteo Moci >>>> Cybion Srl >>>> http://twitter.com/matteomoci >>>> http://matteomoci.wordpress.com >>>> http://about.me/matteomoci/bio >>>> >>>> >>>> >>>> ------------------------------------------------------------------------------ >>>> Gaining the trust of online customers is vital for the success of any >>>> company >>>> that requires sensitive data to be transmitted over the Web. Learn how to >>>> best implement a security strategy that keeps consumers' information secure >>>> and instills the confidence they need to proceed with transactions. >>>> http://p.sf.net/sfu/oracle-sfdevnl >>>> _______________________________________________ >>>> Dbpedia-discussion mailing list >>>> Dbpedia-discussion@lists.sourceforge.net >>>> https://lists.sourceforge.net/lists/listinfo/dbpedia-discussion > > ------------------------------------------------------------------------------ > Gaining the trust of online customers is vital for the success of any company > that requires sensitive data to be transmitted over the Web. Learn how to > best implement a security strategy that keeps consumers' information secure > and instills the confidence they need to proceed with transactions. > http://p.sf.net/sfu/oracle-sfdevnl > _______________________________________________ > Dbpedia-discussion mailing list > Dbpedia-discussion@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/dbpedia-discussion -- Mr. Yrjana Rankka | gh...@openlinksw.com Developer, Virtuoso Team | http://www.openlinksw.com | Making Technology Work For You ------------------------------------------------------------------------------ Protect Your Site and Customers from Malware Attacks Learn about various malware tactics and how to avoid them. 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