Title
Learning Context-Free Grammars from Partially Structured Examples
Abstract
In this paper, we consider the problem of inductively learning context-free grammars from partially structured examples. A structured example is represented by a string with some parentheses inserted to indicate the shape of the derivation tree of a grammar. We show that the partially structured examples contribute to improving the efficiency of the learning algorithm. We employ the GA-based learning algorithm for context-free grammars using tabular representations which Sakakibara and Kondo have proposed previously [7], and present an algorithm to eliminate unnecessary nonterminals and production rules using the partially structured examples at the initial stage of the GA-based learning algorithm. We also show that our learning algorithm from partially structured examples can identify a context-free grammar having the intended structure and is more flexible and applicable than the learning methods from completely structured examples [5].
Year
DOI
Venue
2000
10.1007/978-3-540-45257-7_19
ICGI
Keywords
Field
DocType
learning context-free grammars,partially structured examples,context free grammar
Rule-based machine translation,Context-free grammar,Formal language,Computer science,Finite-state machine,Grammar,Artificial intelligence,Machine learning
Conference
Volume
ISSN
ISBN
1891
0302-9743
3-540-41011-2
Citations 
PageRank 
References 
27
1.23
6
Authors
2
Name
Order
Citations
PageRank
Yasubumi Sakakibara176962.91
Hidenori Muramatsu2271.23