“probabilistic context-free grammar”的概念、定义、翻译、参考文献-科学参考

单词	probabilistic context-free grammar
释义	probabilistic context-free grammar Encyclopedia 文学概率下文无关语法释 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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