Abstract
Motivated by applications in natural language processing, we study the uniform membership problem for hyperedge-replacement grammars that generate directed acyclic graphs. Our major result is a low-degree polynomial-time algorithm that solves the uniform membership problem for a restricted type of such grammars. We motivate the necessity of the restrictions by two different NP-completeness results.
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Acknowledgements
We gratefully acknowledge the support from the Swedish Research Council grant 621-2011-6080 and the EU FP7 MICO project. We are furthermore grateful to the anonymous referees for various helpful comments.
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Björklund, H., Drewes, F., Ericson, P. (2016). Between a Rock and a Hard Place – Uniform Parsing for Hyperedge Replacement DAG Grammars. In: Dediu, AH., Janoušek, J., Martín-Vide, C., Truthe, B. (eds) Language and Automata Theory and Applications. LATA 2016. Lecture Notes in Computer Science(), vol 9618. Springer, Cham. https://doi.org/10.1007/978-3-319-30000-9_40
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DOI: https://doi.org/10.1007/978-3-319-30000-9_40
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