Languages Convex with Respect to Binary Relations, and Their Closure Properties.

Thomas Ang Janusz A. Brzozowski

Published in: Acta Cybern. (2009)

Keyphrases

closure properties
binary relations
expressive power
transitive closure
context free grammars
tree automata
inference rules
first order logic
query language
context free
graph theoretic
information retrieval
relational algebra
conjunctive queries
concept lattice
grammatical inference
data analysis
databases