Computer science Techniques for context-free grammar induction and applications THE UNIVERSITY OF ALABAMA AT BIRMINGHAM Barrett R. Bryant JavedFaizanGrammar Inference is the process of learning a grammar from examples, either positive (i.e., the grammar generates the string) and/or negative (i.e....
A context-free grammar provides a simple and mathematically precise mechanism for describing the methods by which phrases in some natural language are built from smaller blocks, capturing the "block structure" of sentences in a natural way. Its simplicity makes the formalism amenable to rigorous math...
编译原理英文版课件:Chapter3 Context-Free Grammars and Parsing.ppt,?-production ?-production empty ? ?, called an ?-production A grammar rule that generates the empty string, using ? for the empty string A grammar that generates a language containing the
V VP associated with the sentence I hate annoying Figure 2: A context-free grammar neighbors. On the left, we have the interpretation that the neighbors are noisy and we don’t like them. On the right, we have the interpretation that we don’t like doing things (like playing loud music...
Context-free-grammar based token tagger in reconfigurable devices The main contribution of this paper is an FPGA-based implementation of an instance-specific hardware which accelerates the CKY (Cocke-Kasami-Younger) parsi... YH Cho,J Moscola,JW Lockwood - Field Programmable Gate Arrays 被引量: ...
–However,wecandescribethislanguagebythefollowingcontext-freegrammaroverthealphabet{0,1}:PP0P1P0P0P1P1 Inductivedefinition Morecompactly:P|0|1|0P0|1P1精品文档 FormalDefinitionofaCFG •Thereisafinitesetofsymbolsthatformthestrings,i.e.thereisafinitealphabet.Thealphabet...
Test Criteria for Context-Free Grammars This paper discusses the formalization of the test adequacy criterion for context-free grammars. The basic concept of grammar-based testing is introduced a... L Hu,M Jin,L Chao,... - International Computer Software & Applications Conference 被引量: 40发表...
(introduction; inference of regular grammars; inference of context-free grammars; inference of tree grammars; inference of stochastic grammar; concluding ... RC Gonzalez,MG Thomason - American Council on Education, 被引量: 427发表: 1978年 Natural language grammar induction with a generative constituen...
It is proved constructly that there is a polynomial algorithm which,given a context-free grammar G and a string x,decides whether x∈L(G). 在形式语言中通过Chomsky范式“标准化”上下文无关文法,从而构造性地证明了:给定一上下文无关文法G=(V,∑,R,S)和一字符串x,必存在多项式算法确定是否x∈L...
In particular, speech understanding applications require appropr... M Mohri,OCN Pereira - Meeting of the Association for Computational Linguistics 被引量: 59发表: 1998年 A homomorphism theorem for weighted context-free grammars Productions of a context-free grammar can be given coefficients from ...