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We now require that the first derivative of the loss function be positive only if the second derivative is non-zero. This is because when the second derivative is non-positive, we do not use the second order correction suggested by BANS and instead use a simpler first order strategy which does not use a division by the gradient of the loss function. Change-Id: I3d65713f152611998e196ff389a7081acfdfd8c1
Ceres Solver - A non-linear least squares minimizer ================================================== Please see docs/html/index.html for a tutorial and reference.
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