By introducing safe-inserted-node and safe-deleted-node concept into the structure,the performance of tree creation is reenforced.

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By introducing safe-inserted-node and safe-deleted-node concept into the structure, the performance of tree creation is reenforced. The algorithms are also given for the creation of ER-Tree. The empirical test results show that (1) the tree creation algorithm proposed is about 10 times faster than R*-Tree.

Rivest激情欧美自拍偷拍，Cleary以及 Arya和 Mount在假設點集為均勻分布的情況下分析了這類算法的平均復雜度為 O（2〕目前最好的靜態(tài)索引結構和檢索算法是 Arya和 Mountl'在Friedman，Bentley和Finkel等人工作的基礎上提出來的人人干黄视频。