The Structure of Context-Free Grammatical Families.

Armin B. Cremers Seymour Ginsburg Edwin H. Spanier

Published in: J. Comput. Syst. Sci. (1977)

Keyphrases

context free
phrase structure
grammar rules
context free grammars
context sensitive
context dependent
grammatical inference
parse tree
natural language
inductive inference
metadata
co occurrence
tree structures
graph grammars