Earley parser

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Earley recogniser

Terminals/nonterminals Empty string Production Token Tuple

6 related topics

Overview

Computer science Algorithm Parsing Strings Context-free language

13 related topics

Fixes and optimizations

Open source Recursive descent Yacc

3 related topics

Constructing the parse forest

Tomita Ambiguous

2 related topics

Key facts & relationships

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Class: Parsing, context-free
Data structure: String
Worst-case performance: O ( n ) {\displaystyle O(n)} for non-right recursive LR(k) grammars · O ( n 2 ) {\displaystyle O(n^{2})} for unambiguous grammars · O ( n 3 ) {\displaystyle O(n^{3})} for all other context-free grammars
Worst-case space complexity: O ( n ) {\displaystyle O(n)} for non-right recursive LR(k) grammars · O ( n 2 ) {\displaystyle O(n^{2})} for all other context-free grammars

Topics to explore

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Overview

Computer science
Algorithm
Parsing
Strings String (computer science)
Context-free language
Jay Earley
Chart parser
Dynamic programming
LR parsers LR parser
LL parsers LL parser
Compilers Compiler
Left-recursively Left recursion
Unambiguous grammars Unambiguous grammar

Earley recogniser

Terminals/nonterminals Terminal and nonterminal symbols
Empty string
Production Formal grammar
Token Lexical analysis
Tuple
Daniel Jurafsky

Constructing the parse forest

Tomita Masaru Tomita
Ambiguous Syntactic ambiguity

Fixes and optimizations

Advanced semantic analysis

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Map overview Semantic statistics

Nodes29

Edges28

Triples8

Avg. degree1.93

Density0.068966

Components1

How this topic connects Entity context

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Earley parser

Top relations

Worst-case performance · 3

Earley parser → O ( n ) {\displaystyle O(n)} for non-right recursive LR(k) grammars, O ( n 2 ) {\displaystyle O(n^{2})} for unambiguous grammars, O ( n 3 ) {\displaystyle O(n^{3})} for all other context-free grammars

Worst-case space complexity · 2

Earley parser → O ( n ) {\displaystyle O(n)} for non-right recursive LR(k) grammars, O ( n 2 ) {\displaystyle O(n^{2})} for all other context-free grammars

Class · 1

Earley parser → Parsing, context-free

Data structure · 1

Earley parser → String

is a · 1

Earley parser → algorithm for parsing strings that belong to a given context-free language

Important terminology Word statistics

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Important terminology

earley algorithm lr parsing state input parser context-free parse grammar string grammars set time production symbol position original earley's every

Entity relationships Subject–Predicate–Object triples

Subject	Predicate	Object	Confidence	Src
Earley parser	Class	Parsing, context-free	1.00	infobox
Earley parser	Data structure	String	1.00	infobox
Earley parser	Worst-case performance	O ( n ) {\displaystyle O(n)} for non-right recursive LR(k) grammars	1.00	infobox
Earley parser	Worst-case performance	O ( n 2 ) {\displaystyle O(n^{2})} for unambiguous grammars	1.00	infobox
Earley parser	Worst-case performance	O ( n 3 ) {\displaystyle O(n^{3})} for all other context-free grammars	1.00	infobox
Earley parser	Worst-case space complexity	O ( n ) {\displaystyle O(n)} for non-right recursive LR(k) grammars	1.00	infobox
Earley parser	Worst-case space complexity	O ( n 2 ) {\displaystyle O(n^{2})} for all other context-free grammars	1.00	infobox
Earley parser	is a	algorithm for parsing strings that belong to a given context-free language	0.90	text

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