Excess risk
= Excess risk
If $h^*$ minimizes the <population risk> over a <hypothesis class>, the excess risk of $h$ is the nonnegative difference $R(h)-R(h^*)$.
= Excess risk
If $h^*$ minimizes the <population risk> over a <hypothesis class>, the excess risk of $h$ is the nonnegative difference $R(h)-R(h^*)$.