Bootstrap-based estimation for probabilistic characteristic value of river ice compression strength

Abstract:

Aimed at the problems that the probabilistic characteristic value of the river ice compression strength of small sample is unstable and it is difficult to obtain its distribution,the Bootstrap is applied to the determination of the characteristic value of river ice compression strength,then the stable characteristic value of the compression strength of small sample is obtained and its distribution is determined.The experimental data indicate that the probabilistic characteristic value calculated by Bootstrap is better than the results obtained by classical calculating method and Jackknife method,so Bootstrap can improve the stability of probabilistic characteristic value of the river ice compression strength of small sample.