Abstract
Parallelism constraints are logical descriptions 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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Erk, K., Niehren, J. (2000). Parallelism Constraints. In: Bachmair, L. (eds) Rewriting Techniques and Applications. RTA 2000. Lecture Notes in Computer Science, vol 1833. Springer, Berlin, Heidelberg. https://doi.org/10.1007/10721975_8
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DOI: https://doi.org/10.1007/10721975_8
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