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  /external/ceres-solver/internal/ceres/
trust_region_minimizer.cc 233 double model_cost_change = 0.0; local
238 // model_cost_change
244 model_cost_change =
247 if (model_cost_change < 0.0) {
249 << " absolute difference " << model_cost_change
250 << " relative difference " << (model_cost_change / cost);
327 // Boost the model_cost_change, since the inner iteration
329 model_cost_change += x_plus_delta_cost - new_cost;
381 iteration_summary.cost_change / model_cost_change;
385 (accumulated_reference_model_cost_change + model_cost_change);
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  /external/ceres-solver/docs/source/
version_history.rst 384 #. Numerically robust computation of ``model_cost_change``.

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