Hi
On Wed, Jun 19, 2013 at 9:20 AM, Dileepa Jayakody <dileepajayak...@gmail.com> wrote: > Hi All, > > I'm trying out entityhub indexing tool to configure a site for a sample > foaf dataset. My data set (sampleNquads.nx) is in n-quad format. Actually > it is a set of links to foaf files from various sources in nquad format. > > eg: > <http://www.agfa.com/> <http://www.agfa.com/global/en/main/index.jsp> . > *<http://sebastian.tramp.name/> <http://sebastian.tramp.name/index.rdf> .* > <http://gitorious.com/~tobyink> <http://gitorious.org/~tobyink> . > I am not completely sure what you are mean by that. Generally: Links to RDF files are not supported by the Indexing Tool. You will need to download the RDF files to the "indexing/resources/rdfdata" directory. Quad Formats are in principle supported by the Indexing Tool. However node that only SPO are used and the Context is dropped during the import. For debugging the indexing process: * the Indexing Tool logs the number of indexed Entities. You should check this value * the IDs off all indexed entities are also stored in "indexing/destination/indexed-entities-ids.zip". After installing the index to Stanbol you can use those IDs to retrieve the available data by using requests like "curl -H "Accept: text/turtle" "http://localhost:8080/entityhub/site/{site-name}/entity?id={entity-id}"; > I followed the instructions here [1] and in the ReadMe.md, > indexing.properties files of the tool and created a site {datahub} for my > data accessible at : http://localhost:8080/entityhub/site/datahub/ > > However when I try out sample requests to find entities in the site I get > no results. > I'm trying to find the entity with *name=Sebastian** which is actually in > the sample dataset used above but I get an empty results set. Can anyone > please help me understand what I've done wrong here? Basically I have > followed the steps in init, index executions of the tool. > > Is it because my dataset is only a set of external links to foaf files? > Do I need to manually download the foaf files to indexing/resources/rdfdata > directory? > > eg : > > request: curl -X POST -d "name=Sebastian*" > http://localhost:8080/entityhub/site/datahub/find > > result : > { > "query": { > "selected": [ > "http:\/\/stanbol.apache.org\/ontology\/entityhub\/query#score", > "http:\/\/www.w3.org\/2000\/01\/rdf-schema#label" > ], > "constraints": [{ > "type": "text", > "patternType": "wildcard", > "text": "SSebastian Tramp", > "field": "http:\/\/www.w3.org\/2000\/01\/rdf-schema#label" > }], > "limit": 5, > "offset": 0 > }, > "results": [] > } > For queries like that you need to make sure that your entities do have values for "rdf:label". AFAIK the default "indexing/config/mapping.txt" configuration does copy the foaf:name value to rdfs:label, but if you do specifically work with FOAF data you should preferable query for "foaf:name". best Rupert > > Your help is much appreciated here. > Thanks, > Dileepa > > > [1] http://stanbol.apache.org/docs/trunk/customvocabulary.html -- | Rupert Westenthaler rupert.westentha...@gmail.com | Bodenlehenstraße 11 ++43-699-11108907 | A-5500 Bischofshofen
