Searched refs:tau_bfgs (Results 1 – 2 of 2) sorted by relevance
| /petsc/src/tao/bound/impls/bncg/ |
| H A D | bncg.h | 27 PetscReal tau_bfgs, tau_dfp; member
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| H A D | bncg.c | 441 PetscReal gkp1_yk, gd_old, tau_bfgs, tau_dfp, gkp1D_yk, gtDg; in TaoBNCGStepDirectionUpdate() local
837 …PetscCall(TaoBNCGComputeScalarScaling(cg->yty, step * dk_yk, snorm * snorm, &tau_bfgs, cg->bfgs_sc… in TaoBNCGStepDirectionUpdate()
840 tau_k = cg->theta * tau_bfgs + (1.0 - cg->theta) * tau_dfp; in TaoBNCGStepDirectionUpdate()
843 tmp = cg->theta * tau_bfgs * gd / dk_yk + (1 - cg->theta) * tau_dfp * gkp1_yk / cg->yty; in TaoBNCGStepDirectionUpdate()
844 …beta = cg->theta * tau_bfgs * (gkp1_yk / dk_yk - cg->yty * gd / (dk_yk * dk_yk)) - step * gd / dk_… in TaoBNCGStepDirectionUpdate()
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