理学 【基本概念】 释 probabilistic context-free grammars; PCFG 概率句法分析 在上下文无关文法的基础上对每个规则加以概率限制，从而就可以求出一个句子的特定语法树的概率值的方法。又称概率上下文无关语法。
人工智能 计算语言学 释文 probabilistic context free grammar, PCFG 概率上下文无关文法
- primal linear programming
- primal method
- primal path-following method
- primal problem
- primal radical
- primal simplex method
- primal solution
- primal variable
- Prima prattica,Seconda prattica
- primarily reduced representation
- primary
- primary abelian group
- primary aberration
- primary acoustical radiator
- primary active transport of nutrients in plants
- primary afferent
- primary afferent depolarization
- primary air fan
- primary air pollutant
- primary alcohol ethoxylate
- primary alkaline zinc manganese dioxide battery
- primary alkaline zinc/manganese dioxide battery
- primary amoebic meningo-encephalitis
- Primary and Middle School Library (Room) Rules
- primary and secondary