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probabilistic context-free grammar
概率上下文无关语法
在识别句子时,给合法的句子以较大概率,给不合法的句子以较小概率的方法。由A.D.布斯(A.D.Booth,美国)于1969年最早提出。简称PCFG。又称随机上下文无关语法(stochastic context-free grammar,简称SCFG)。
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