Why Does Information-Based Complexity Use the Real Number Model?
Why Does Information-Based Complexity Use the Real Number Model?
复制标题
为什么基于信息的复杂性使用实数模型?
DOI:
10.1016/s0304-3975(98)00300-4
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发表时间:
1999
期刊:
影响因子:
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通讯作者:
H. Wozniakowski
中科院分区:
文献类型:
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作者:
H. Wozniakowski
We explain why information-based complexity uses the real number model. Results in the real number model are essentially the same as in floating point arithmetic with fixed precision modulo two important assumptions, namely • we use only stable algorithms, • the approximation error is not too small, compared to the product of the condition number, the roundoff unit of floating point arithmetic, and the accumulation constant of a stable algorithm. We illustrate this by an example of solving nonlinear equations by bisection. We also indicate the possible tradeoffs between complexity and stability, and the need of using multiple or varying precision for ill-conditioned problems.
影响因子:
2.1
作者:
通讯作者:
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