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Closure Properties of GapP and #P
Richard Beigel
Published in:
Electron. Colloquium Comput. Complex. (1995)
Keyphrases
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closure properties
expressive power
context free grammars
tree automata
conjunctive queries
structural properties
query language
context free
machine learning
information retrieval
database
high level
first order logic
query answering
grammatical inference