Question

I have a list of key value pairs. For each key, I want to see how unique the values are. For example, for a particular key k1, all the values might be the same. (best case). For a key k2, half of the values are one type and the other half are different. . . Similarly, for a key kx, none of the values match (worst case).

我想根据以上所述,对每个关键人物进行排名(或百分比,无论大小),并作出最后命令,以便我能够筛选出具有许多不同价值(超标等级或百分比)的人。

I somehow think this is somewhat related to some concepts I learned in my data mining course, but just cannot recall effectively.

感谢。

Answer 1

或许可以为此使用

For each key, you could compute the entropy of the values. The higher the entropy, the more diverse the key s values are. You could use that to rank the keys.

以下条款讨论了一些相关专题:。计算数据采矿的Entropy。

Answer 2

在从上的数据采矿中,你可以认为指数是一种预测价值的手段,在这种情况下,你可能对信任感兴趣——该指数最经常值的百分比。您也可研究两种随机选择的数值相同的可能性,即价值频率的大小,或 ,该数值具有类似特性,但涉及使用标识。

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