dist：需要使用的距离函数。
规则距离函数是规则聚类中的重要一环。
The rule distance function is the key feature of rule clustering.
在经典的聚类分析中，度量差异性的指标是距离的简单函数。
In classical clustering analysis, the dissimilarity is only simple function of distance.
根据距离函数可以方便地求得较为合理的分配。
Depending on the distance function, we can easily get the effective assignment.
据此提出气门和活塞间距离的函数。
Thus the function of the distance between valve and piston is put forward.
在度量空间中有一个定义好了的距离函数。
There is an interval function that has been defined in Metric Space.
在本文中，我们提出了一种新的无需距离函数的聚类方法。
In this paper, we propose a new method for clustering without distance functions.
函数中的直线距离替换为折距，对其进行了改进。
The fold distance of the heuristic function was used instead of its direct distance.
函数中的直线距离替换为折距，对其进行了改进。
The fold distance of the heuristic function was used instead of its direct distance.
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