The space of the extremum mine microseism is closely connected with the high stress zones.

极值矿山微震发生的空间部位与高应力区密切相关。

Image reconstruction is often converted to the nonrestraint extremum of the nonlinear equations.We have deduced a conjugate gradient algorithm from the extremum of norm.

图像重建常常被转为解无约束极值问,通过范数极小出共轭梯度法的一般算法。

The results of tests show that the new subsampling method outperforms other subsampling methods in less extrema and convergence performance of the normalized mutual information.

实验结果表明，新抽样方法可以有效地减少局部极值点，提高归一互信息测度的收敛能。