org.allenai.nlpstack.parse.poly.polyparser
A StackRef is a StateRef (see above) whose apply operation returns the indexth element of the stack, if it exists.
index
the desired stack element, counting from 0 (i.e. 0 is the stack top)
the desired stack element, counting from 0 (i.
Provides a symbolic representation of the StateRef, used for creating feature names.
A StackRef is a StateRef (see above) whose apply operation returns the
index
th element of the stack, if it exists.the desired stack element, counting from 0 (i.e. 0 is the stack top)