Hierarchies of String Languages Generated by Deterministic Tree Transducers

  • Joost Engelfriet
  • Sebastian Maneth
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 2295)


The composition of total deterministic macro tree transducers gives rise to a proper hierarchy with respect to the generated string languages (these are the languages obtained by taking the yields of the output trees). The same holds for attributed tree transducers, for controlled EDT0L systems, and for YIELD mappings (which shows properness of the IO-hierarchy).


Yield Mapping Hasse Diagram Tree Automaton Tree Language Rank Zero 
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Copyright information

© Springer-Verlag Berlin Heidelberg 2002

Authors and Affiliations

  • Joost Engelfriet
    • 1
  • Sebastian Maneth
    • 1
  1. 1.LIACSLeiden UniversityLeidenThe Netherlands

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