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ORA-40108: input data contains too few distinct target (string) values ORACLE 报错 故障修复 远程处理

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ORA-40108: input data contains too few distinct target (string) values ORACLE 报错 故障修复 远程处理

文档解释

ORA-40108: input data contains too few distinct target (string) values

Cause: At least two distinct target values are required for Build.

Action: Provide counter-example target values in the input data.

该错误提示输入数据中分类值过少,即类别太少。通常出现这个错误的情况是:机器学习算法中有一个需要对输入进行分类的阶段,而输入的数据中有的类别的数据量太少,不能满足算法的要求。此时系统会报错ORA-40108:输入数据中分类值过少。

官方解释

常见案例

一般处理方法及步骤

1.查看数据中的类别数量,如果某一类的数据量过少,需要删除该类数据;

2.如果要保留该类数据,需要对其他类数据进行抽样,增加每个类数据的数量;

3.如果没有足够数据进行抽样,则需要收集新数据,使每个类数据的数量都达到最少要求;

4.如果某两个或多个类别相关性较强,可以将这些类别合并,减少类别的数量。

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ORA-40108: input data contains too few distinct target (string) values ORACLE 报错 故障修复 远程处理

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