Lines Matching full:hessian
117 << "Ceres bug: NextDirection() called on L-BFGS after inverse Hessian "
130 LOG(WARNING) << "Numerical failure in L-BFGS update: inverse Hessian "
156 << " parameters, this will allocate a dense approximate inverse Hessian"
171 << "Ceres bug: NextDirection() called on BFGS after inverse Hessian "
183 // Update dense inverse Hessian approximation.
186 // Rescale the initial inverse Hessian approximation (H_0) to be
188 // inverse Hessian at the start point. As shown in [1]:
198 // of the true initial Hessian (not the inverse) respectively. Thus,
199 // \gamma is an approximate eigenvalue of the true inverse Hessian, and
201 // similar scale to the true inverse Hessian. This technique is widely
270 // Finally, update inverse Hessian approximation according to:
282 LOG(WARNING) << "Numerical failure in BFGS update: inverse Hessian "
