The divide and rule method is a common solving method, which can predigest the scope of questions and reduce the complexity of computing.

分治法是一种常用的问题求解方法，可以简化问题规模，降低计算复杂度。

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The reason beyond this is that those fast algorithms do reduce the complexity of computing but still one needs to use floating-point arithmetic operations in the computation process.

原因是这些快速算法虽减少了计算复杂性，但在计算过程中仍需要大量浮点运算。

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According to the character of expected information, the article proposed a new ID3 algorithm of decision trees to reduce the complexity of computing expected information by the convex function.

根据ID3算法中信息增益计算原理的特点，利用上凸函数的性质提出一种新的改进的ID3算法，减少了信息增益的计算量，进而提高ID3算法中信息增益的计算效率。

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Apple Computer is enjoying a comeback, in part because it saves its customers time from the growing complexity of Windows computing.

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