Hi,
I've been using the EntityHub for my own projects for quite a while now
and was looking to further refinements of my way to query it. So I
wanted to refine my Similarity searches on a DBpedia referenced site so
that they consider many fields, not just rdfs:label (but not all of
them, like the fullText property would do).
Basically what I want is that a similarity search for "sumner" also
returns dbpedia:Sting_(musician) because Sting's birth name and
dbo:alias is "Gordon Matthew Sumner".
Both the live documentation and the FieldQueryReader parser seem to
support this "addFields" property to the constraint, however I am not
sure I am using it properly since it seems to be ignored.
(I'm on the HEAD of the release-012 branch)
basically if I POST the following query:
{
"selected": [
"http:\/\/www.w3.org\/2000\/01\/rdf-schema#label",
"http:\/\/dbpedia.org\/ontology\/thumbnail"],
"offset": "0",
"limit": "10",
"constraints": [{
"type": "similarity",
"context": "sumner",
"field" : "http:\/\/www.w3.org\/2000\/01\/rdf-schema#label",
"addFields": [ "http:\/\/dbpedia.org\/ontology\/alias" ]
},{
"type": "reference",
"field": "http:\/\/www.w3.org\/1999\/02\/22-rdf-syntax-ns#type",
"value": "http:\/\/dbpedia.org\/ontology\/Person"
}]
}
the JSON returned by the service also includes the parsed query, which
however doesn't seem to either include "addFields" nor to expand the
"field" property.
{
"query": {
"selected": [
"http:\/\/dbpedia.org\/ontology\/thumbnail",
"http:\/\/www.w3.org\/2000\/01\/rdf-schema#label",
"http:\/\/stanbol.apache.org\/ontology\/entityhub\/query#score"
],
"constraints": [
{
"type": "similarity",
"context": "sumner",
"field": "http:\/\/www.w3.org\/2000\/01\/rdf-schema#label",
"boost": 1
},
{
"type": "reference",
"value": "http:\/\/dbpedia.org\/ontology\/Person",
"mode": "any",
"field":
"http:\/\/www.w3.org\/1999\/02\/22-rdf-syntax-ns#type",
"boost": 1
}
],
"limit": 10,
"offset": 0
},
"results": [{
// .......................
}]
}
I know the referenced site does contain the expected data because if I
replace rdfs:label with dbo:alias in "field", Sting is returned as the
first result.
Is there anything I must be doing wrong?
Many Thanks
Alessandro
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