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Parallelism Constraints
Author: Katrin Erk and Joachim NiehrenEditor:
Parallelism constraints are logical desciptions of trees. They
are as expressive as context unification, i.e.
second-order linear unification. We present
a semi-decision procedure enumerating all most general
unifiers of a parallelism constraint and prove it sound
and complete. In contrast to all known procedures
for context unification, the presented procedure
terminates for the important fragment of dominance
constraints and performs reasonably well in a recent
application to underspecified natural language semantics.
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