Only classification accepted so far / classification domain always true/false

[mguetlein]

is_classification stump: http://github.com/mguetlein/opentox-validation/blob/test/lib/wrapper.rb#L34

feature range/domain stump: http://github.com/mguetlein/opentox-validation/blob/test/lib/wrapper.rb#L4

TODO

• a workaround could be implemented: parse feature values: numerical? regression, else classification
• finally this should be solved by accessing the ontology service