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Interval Control Methods of Rounding Error in Numerical Calculation

机译:数值计算中舍入误差的间隔控制方法

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The analysis of the errors arising in numerical calculation can contribute to identify the reliability of calculated results, avoid error hazards and improve the accuracy of calculations. It is one of the research focuses of numerical calculation to efficiently control the errors by improved algorithms. In the actual process of calculations, the number of significant digits always only gets limited because of the length restrictions of the numbers in the computer. Therefore, these methods for some algorithms, especially when the problems are ill-conditioned or unstable, may not be able to get the desired results, that is, the errors can't effectively be controlled. The use of interval calculation methods is able to more effectively solve these problems. Furthermore, some mathematical softwares, such as mathematica, provided the infinite-precision calculation methods by which we can get real results for the specific numeric type.
机译:在数值计算中产生的误差的分析可以有助于确定计算结果的可靠性,避免危险危险并提高计算的准确性。它是数值计算的重点之一,以通过改进的算法有效地控制误差。在实际计算过程中,由于计算机中的数字的长度限制,始终只有有限的数字。因此,对于一些算法的这些方法,特别是当问题不稳定或不稳定时,可能无法获得所需的结果,即,无法有效地控制错误。使用间隔计算方法能够更有效地解决这些问题。此外,一些数学软件,例如Mathematica,提供了无限精度的计算方法,我们可以为特定数字类型获得实际结果。

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