When the tree is built, it may be pruned using cross-validation procedure, if need.
当树建好之后，如果需要的话，可能需要用交叉验证来进行剪枝。
The first step to improving our data-format validation procedure is to move all the validation logic into a single helper class, from which other methods can invoke it as needed.
改进数据格式验证过程的第一步是将所有的验证逻辑都移至一个助手类中，其它方法可以按需从这个类上调用验证逻辑。
We'll start with an introduction to conversion and validation procedures as they apply to the JSF lifecycle, then demonstrate a default conversion and validation procedure in a simple JSF application.
首先我们将介绍应用于JSF生命周期的转换和验证过程，然后展示一个简单的JSF应用程序中的默认转换和验证过程。
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