Feature selection has abroad application in machine learning and data mining area, it is always applied as a primary pre-processing step.
属性选择通常作为一个主要的预处理步骤，在机器学习和数据挖掘领域有着广泛的应用。
This paper introduces the land occupation condition and features of coal mine, and probes into the plants arrangement and selection principle of tree species in mining area greening.
介绍了矿区立地条件及特点，对矿区绿化的植物配置及树种选择原则进行了探讨。
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