Hi Manish,
Currently ReferencedSite do not know what properties are present.
Generally it is not easy to know what properties are present, as this
depends on may things in the configuration of the Entityhub Indexing
Tool. In the case of Freebase one needs to consider two
configurations:
* mappings.txt used to index the site, as it defines the properties
that will be indexed.
* propertyfilter.config as it defines import filter that will exclude
some RDF triples from being imported form the RDF dump to the Jena TDB
(used as source for the indexing)
Only properties that are enabled by both filters will be present in the index!
An other (pragmatic) possibility to determine available properties is
to search for a very famous Entity of the type you are interested
(e.g. Barack Obama for Persons) and request this Entity from the
ReferencedSite
http://localhost:8080/entityhub/site/freebase/entity?id=http://rdf.freebase.com/ns/m.03qccxj&header_Accept=
As famous Entities usually do have values for all properties this as
also a pragmatic possibility to check what properties are present.
If you used the default configuration to create the freebase index the
following properties of your example should be present
> "rdf:type",
> "fb:people.person.date_of_birth",
> "fb:people.person.nationality",
> "fb:people.person.date_of_birth",
The following properties are not included
> "fb:people.person.gender"
imported in Jena TDB, but excluded in mappings.txt.
and
> "fb:common.topic",
is not a property but a category (see
http://www.freebase.com/common/topic?schema=) for properties defined
under this category
If you want to have other/more properties to be included you will need
to change the above mentioned configurations accordingly and create an
new index. The default configuration of the Freebase Indexing tool is
optimized for the use with the Stanbol Enhancer for EntityLinking.
best
Rupert
On Wed, Jun 12, 2013 at 3:11 PM, Manish Aggarwal <mani.i...@gmail.com> wrote:
> Hi,
> I am using fiedQuery:
>
> {
> "selected": [
> "rdf:type",
> "fb:people.person.date_of_birth",
> "fb:people.person.children",
> "fb:common.topic",
> "fb:people.person.nationality",
> "fb:people.person.gender"
> ],
> "offset": "0",
> "limit": "5",
> "constraints": [{
> "type": "text",
> "language": "en",
> "text": "Roger",
> "field": "http:\/\/www.w3.org\/2000\/01\/rdf-schema#label"
> }]
> }
>
>
>
> Reagrds,
> Manish
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