Which issue arises when applying PowerTransformer with ‘yeo-johnson’ to a feature containing negative values and zeros?

Question

Data Science — Hard

Which issue arises when applying PowerTransformer with ‘yeo-johnson’ to a feature containing negative values and zeros?

Accepted Answer

Unlike the Box-Cox transformation, which is restricted to strictly positive data, the Yeo-Johnson transformation is a power transformation that supports both positive and negative values, including zero. It is specifically designed to stabilize variance and minimize skewness across the entire real number line, making it more robust for datasets with mixed-sign distributions.