This dissertation discusses the theory and realization of the Probabilistic Context Free Grammar-based syntactic parser.
本文论述了基于概率的上下文无关语法的句法分析的原理及实现过程。
Context free grammar extended by constrained formula and an improved LR parser are adopted to formalize and recognize the special strings.
提出从组成形式和上下文语境两个方面来自动识别汉语文本中的各种特殊符号串。
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