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研究Beta分布随着参数选取的不同可以转化为其他不同的分布,从简单分布到复杂分布,从对称分布到不对称分布,因此Beta分布的适应性很强,建议用Beta分布拟合岩土工程中随机变量的分布类型。在Beta分布的四个参数确定中,利用随机加权法较准确地估计出四个参数,随机加权法不仅解决了传统算法的繁琐迭代过程,而且避免了迭代过程可能产生的不收敛现象,通过实例分析表明,随机加权法的精度满足工程需要,具有很重要的工程实际意义。
Study on Beta Distribution With the selection of different parameters can be transformed into other different distributions, from simple distribution to complex distribution, from the symmetrical distribution to asymmetric distribution, so the Beta distribution adaptability, it is recommended to use Beta distribution fitting geotechnical engineering In the distribution of random variables type. In the four parameters of Beta distribution, four parameters are accurately estimated by stochastic weighting method. The stochastic weighting method not only solves the cumbersome iterative process of the traditional algorithm, but also avoids the non-convergence phenomenon that may occur in the iterative process. The analysis shows that the precision of the random weighting method meets the needs of the project and has very important practical significance.