# Is there “unsupervised regression”?

If I am correct, “unsupervised classification” is same as clustering. Then is there “unsupervised regression”? Thanks!

However, regression parameter estimates are not reflexive. For simple linear regression, regressing $Y$ upon $X$ will give you different results, different inference, and different estimates (not even inverse necessarily), than $X$ upon $Y$. In my mind, this lack of commutativity makes most naive regression applications ineligible for unsupervised learning problems.