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ORA-40262: NMF: number of features not between [1, string] ORACLE 报错 故障修复 远程处理

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ORA-40262: NMF: number of features not between [1, string] ORACLE 报错 故障修复 远程处理

文档解释

ORA-40262: NMF: number of features not between [1, string]

Cause: The number of requested features must be greater than 1, and less than the smaller of the number of attributes and the number of cases in the dataset.

Action: Specify the desired number of features within the acceptable range.

错误说明:

ORA-40262是ORACLE数据库中的一个特定错误,即Non-Negative Matrix Factorization(NMF)中number of features不在规定范围[1, string]。这意味着非负矩阵因式分解(NMF)假设指定的特征数量必须在一定的范围内,而此范围为1到任意字符串字符数。

常见案例

ORA-40262错误常常发生在使用ORACLE的Non-Negative Matrix Factorization( NMF)算法(自然语言处理、文本挖掘)时。此算法以非负项分解(non-negative factorization)的方式拆解一个矩阵,用于抽取其模式的功能。

解决方法:

要解决ORA-40262错误,首先应找出出错的部分:number of features不在范围[1, string]之内,代码在哪里输入了非规定范围之外的number of features(也许是一个非数值字符串)。若是在ORACLE中,用户可以用ALTER SESSION或CHANGE SESSION指令修改number of features值,这样能够使输入值符合要求,从而解决这个错误;若是其他系统,用户可以检查传入参数是否符合要求,从而解决这样的错误。

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ORA-40262: NMF: number of features not between [1, string] ORACLE 报错 故障修复 远程处理

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