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。
Meanwhile, the protocol certificated its own fairness on the basis of right cross validation.
最后证明了在交叉验证理论可证明正确的前提下，协议具有公平性。
Path construction and path validation for cross-certification.
交叉认证的路径构造与路径验证。
Path construction and path validation for cross-certification.
交叉认证的路径构造与路径验证。
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