Hessian matrix
Hessian matrix: The matrix of second derivatives of a scalar function, describing local curvature across variable pairs. Eigenvalues and conditioning affect optimisation and stationary points. Full computation is expensive for large networks, so approximations are used. This perspective connects the definition with practical behaviour in artificial intelligence systems.
In italiano: Matrice HessianaLegge IV · Loss, gradiente e ottimizzatoriEigenvalues and conditioning affect optimisation and stationary points. Full computation is expensive for large networks, so approximations are used.