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class String
# :prediction_feature -> predictionFeature
# :test_dataset_uri -> testDataset
# :validation_uris -> validation
def to_rdf_format
s = gsub(/_uri(s|)$/,"")
s.gsub(/_./) do |m|
m.gsub!(/^_/,"")
m.upcase
end
end
def from_rdf_format
gsub(/[A-Z]/) do |m|
"_"+m.downcase
end
end
DC_KEYS = [ "title", "creator", "date", "format" ]
RDF_KEYS = [ "type" ]
def to_owl_uri
if DC_KEYS.include?(self)
return DC.send(self)
elsif RDF_KEYS.include?(self)
return RDF.send(self)
else
return OT.send(self)
end
end
end
class Hash
# applies to_rdf_format to all keys
def keys_to_rdf_format
res = {}
keys.each do |k|
v = self[k]
if v.is_a?(Hash)
v = v.keys_to_rdf_format
elsif v.is_a?(Array)
v = v.collect{ |vv| vv.is_a?(Hash) ? vv.keys_to_rdf_format : vv }
end
res[k.to_s.to_rdf_format] = v
end
return res
end
def keys_to_owl_uris
res = {}
keys.each do |k|
v = self[k]
if v.is_a?(Hash)
v = v.keys_to_owl_uris
elsif v.is_a?(Array)
v = v.collect{ |vv| vv.is_a?(Hash) ? vv.keys_to_owl_uris : vv }
end
res[k.to_s.to_owl_uri] = v
end
return res
end
end
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