Earley Parser
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An Earley Parser is a context-free natural language syntactic parsing algorithm similar to the one proposed in (Earley, 1970).
References
1970
- (Earley, 1970) ⇒ Jay Earley. (1970). “An Efficient Context-Free Parsing Algorithm.” In: Communications of the ACM, 13(2). doi:10.1145/362007.362035
- ABSTRACT: A parsing algorithm which seems to be the most efficient general context-free algorithm known is described. It is similar to both Knuth's LR(k) algorithm and the familiar top-down algorithm. It has a time bound proportional to n3 (where n is the length of the string being parsed) in general; it has an n2 bound for unambiguous grammars; and it runs in linear time on a large class of grammars, which seems to include most practical context-free programming language grammars. In an empirical comparison it appears to be superior to the top-down and bottom-up algorithms studied by Griffiths and Petrick.