误差分析的方法有多种，例如，威点逊（J. H. Wilkison）针对的计算机的浮点运算提出的“向后误差分析”，这是一种先验估计误差的方法，较以往的“向前误差分析”在矩阵运算的舍入误差估计上有较好的结果，以而使矩阵的误差分析获得了突破性的进展，使不少用向前误差分析难于判定可靠性的数值方法获得新的进展。-error analysis by a number of means, for example, Granville point Morrison (J. H. Wilkison), referring to a computer's floating-point operations "backward error analysis," This is a priori estimation error method, compared to the previous "Forward Error Analysis" in the matrix computation Rounding error a better estimate on the results of a matrix so the error analysis of a breakthrough in the progress, many with forward error analysis difficult to determine the reliability of numerical methods to achieve new progress.