Attribute groups attribute groups provide a more formal classification structure, including attribute names, values and default value.

属性组属性组提供了一种更加规范的分类结构，包括属性名，值以及默认值。

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This text introduced the concept of the classification counter of attribute value, then introduced ID4 algorithm and ID5R algorithm especially, and compare at the end.

该文引入了属性值类别计数器的概念，然后重点介绍了ID4算法和ID5R算法，并在最后加以比较。

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This algorithm is simple, useful, and easy to implement, but the value of K is hard to determine and the result of classification is easy to disturb by individual attribute.

该算法简单有效，易于实现，但是其K值难以确定，而且分类结果易受单个属性干扰。

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