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The data pretreatment to reduce the redundancy of data and eliminate the data imprecise is the bottleneck in data mining. This article uses the superiority of the rough set model to eliminate the data imprecise, reduce the redundancy as far as possible in the data pretreatment and reduces the data capacity by the deduction of the attributes and deduction of values. It has also laid the foundation...
In this paper, the niche breadth and overlap value of dominant species is calculated and analyzed along the community gradients to study population dynamics in the protection forest, Xinjiang, China. The main results are as follows. After four years, the amount of populations are increasing as a result of some local species naturally occurred or invaded. And seven dominant species including three...
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