TY - RPRT TI - From exact gradients to exact standard errors: third-order sensitivity equations for the FOCE and FOCEI population likelihood AU - van de Beek, H. AU - Beldjenna, M. AU - Fidler, M. L. AU - Zwep, L. B. AU - van Hasselt, J. G. C. PY - 2026 DO - 10.64898/2026.07.09.737434 UR - https://www.biorxiv.org/content/10.64898/2026.07.09.737434v1 ID - 10.64898/2026.07.09.737434 ER -