Numerical matched condition is proposed to overcome the difference error and to reduce the computational expense of PML.
为了克服理想匹配层的差分误差，减少计算开销，提出数值匹配条件。
These approaches can be regarded as 'good house keeping measures' that improves on the computational expense of large FE runs;
这些方法 可视为的好场所维护措施的 改进了计算费用的大铁跑；
A composite feature selection method for reaping the benefits of precision from the wrapper method and keeping the computational expense down from the filter method is proposed.
为了利用过滤方法计算简单和绕封方法精度高的优点，提出一种组合过滤和绕封方法的特征选择新方法。
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