PjUk=14θ[𝜶k+𝜼1(Pj)𝜷k+𝜼2(Pj)](𝐳k|𝛀)=PjUck=14θ[𝜶k+𝜼1(Pj)𝜷k+𝜼2(Pj)](𝐳k|𝛀).