The Application of Principal Component Analysis in the Planning of Spatial Arrangement of County Town System-With Longchuan County in Guangdong Province as an Example;
主成分分析方法在县域城镇体系空间布局规划中的应用——以广东省龙川县为例
Taking farmland in Longchuan County,Guangdong Province as example,six kinds of learning samples were chosen from clustering results by means of experimentation,and 4000 samples were finally learning sa.
运用此方法以广东省龙川县耕地为研究对象,以试验法挑选出6种聚类结果的学习样本,确定4000个样本作为最终的学习样本;利用决策代价权重来改进决策树评价模型,最终建立的评价模型的预测精度达到94。
The Impact of Flood Control Works of the Longchuan River on Evolution of River Bed;
龙川江防洪工程建设对河床演变的影响
Water Quality of Longchuan River;
保山市境内龙川江水质变化状况分析
Li Longchuan and Famous General of Anhwei Troops Li Changle;
李龙川与淮军名将李长乐