Artificial neural network is a kind of implicit expression without explicit expression as statistical regression model, and it is its disadvantage.

人工神经网络不具备统计回归模型的显式表达形式，是一种隐式模型，因而有它的缺陷性。

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Explicit numeric conversion is used to convert any numeric type to any other numeric type, for which there is no implicit conversion, by using a cast expression.

显式数值转换用于通过显式转换表达式，将任何数字类型转换为任何其他数字类型。对于它不存在隐式转换。

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To recognize the Chinese temporal expression, we divide the task into two sub-tasks: the explicit temporal expression recognition and the implicit temporal expression recognition.

在汉语时间表达识别中，主要内容分为两部分：明显时间表达的识别和隐含时间表达的抽取。

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