restrict relations to specific spans

[Alexis McClimans]

Hello all,

Is it possible to restrict relations to specific span features? Such that I could constrain the usage of particular relations, or direction of their arcs, to only go from one type to another?

Valid:

Person1 -> relation1 -> Organization1

Invalid:

Organization1 ->relation1 -> Person1

Thank you!

[Richard Eckart de Castilho]

Hi,

I found this constraints rule on a relation type in one of our unit tests:

import de.tudarmstadt.ukp.dkpro.core.api.syntax.type.dependency.Dependency as DEPENDENCY;
DEPENDENCY {
Governor.pos.PosValue = "NN" & Dependent.pos.PosValue = "DET" -> DependencyType = "det";
}

The "Governor" and "Dependent" things are hard-coded and refer to the two ends of the relation - any relation, not only Dependency relations.

Cheers,

-- Richard