光有策略语法是不够的：还需要通过一种机制判断策略的有效性并演算策略。
Having policy syntax is not enough: You also need to have a mechanism to assert the validity of the policy and to evaluate the policy.
与演算的语法研究的同时，还有数理逻辑的形式语言的语义研究。
And the grammar study calculus at the same time, there are mathematical logic in the form of the semantic language study.
本课程涵盖了语法、语意及对话处理模型，著重在机器学习或是以语料库为基础的方法及演算法。
It covers syntactic, semantic and discourse processing models, emphasizing machine learning or corpus-based methods and algorithms.
一个合法的谓词演算表达式，即谓词演算语法所允许的公式。
A legitimate expression of the predicate calculus. That is, it is acceptable under the predicate calculus' syntax.
一个合法的谓词演算表达式，即谓词演算语法所允许的公式。
A legitimate expression of the predicate calculus. That is, it is acceptable under the predicate calculus' syntax.
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