本文整理汇总了Java中weka.core.DistanceFunction.distance方法的典型用法代码示例。如果您正苦于以下问题：Java DistanceFunction.distance方法的具体用法？Java DistanceFunction.distance怎么用？Java DistanceFunction.distance使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类weka.core.DistanceFunction的用法示例。
在下文中一共展示了DistanceFunction.distance方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Java代码示例。
示例1: calcRadius
import weka.core.DistanceFunction; //导入方法依赖的package包/类
/**
* Calculates the radius of a node.
*
* @param start The start index of the portion in indices array
* that belongs to the node.
* @param end The end index of the portion in indices array
* that belongs to the node.
* @param instList The indices array holding indices of
* instances.
* @param insts The actual instances. instList points to
* instances in this object.
* @param pivot The centre/pivot of the node.
* @param distanceFunction The distance function to use to
* calculate the radius.
* @return The radius of the node.
* @throws Exception If there is some problem calculating the
* radius.
*/
public static double calcRadius(int start, int end, int[] instList,
Instances insts, Instance pivot,
DistanceFunction distanceFunction)
throws Exception {
double radius = Double.NEGATIVE_INFINITY;
for(int i=start; i<=end; i++) {
double dist = distanceFunction.distance(pivot,
insts.instance(instList[i]), Double.POSITIVE_INFINITY);
if(dist>radius)
radius = dist;
}
return Math.sqrt(radius);
}