Think about a company like Amazon and the common "Customers who purchased X also purchased y" feature. If Amazon were to create a classification tree, how many branches and nodes could it have?
举个例子，亚马逊这样的公司常常使用“购买了X的顾客还购买了Y ”特性，如果亚马逊拟创建一个分类树，那么它将需要多少分支和节点？
There are many, but one plausible rule is based on the idea that weight and threshold modification should be determined by a fraction of (t - y).
有很多，不过有一条似乎合理的规则是基于这样一种思想，即权系数和阈值的调整应该由分式(t- y)确定。
The NCAR Graphics home page provides a stable UNIX package for drawing contours, maps, surfaces, weather maps, x-y plots, and many others.
NCAR Graphics主页提供了一个稳定的UNIX包用来绘制轮廓图、地图、表面图、气象图、x - y图以及很多其他图形。
Y - STR has many advantages over other genetic markers and it has become a hot topic of both application and research in forensic medicine.
与其他遗传标记相比，Y-STR具有许多优点，正成为Y染色体遗传标记中法医学应用和研究的热点。
One could also say (in a more optimistic fashion) that they depict how a Generation Y-er strives to discover his true identity in this world filled with too many possibilities;
或者我们也可以说（更为积极乐观的）它描绘Y世代奋争在这个拥有无数可能性的世界里寻找自己真实的身份。
Many bronze valves offer a Y-pattern body with an angle seat forimproved performance.
许多青铜阀门为了改进性能，采用角式阀座的Y形阀体。
Many bronze valves offer a Y-pattern body with an angle seat forimproved performance.
许多青铜阀门为了改进性能，采用角式阀座的Y形阀体。
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