/usr/share/octave/packages/stk-2.5.0/param/ is in octave-stk 2.5.0-1.
This file is owned by root:root, with mode 0o755.
..
/usr/share/octave/packages/stk-2.5.0/param/classes/
/usr/share/octave/packages/stk-2.5.0/param/classes/doc-cache
/usr/share/octave/packages/stk-2.5.0/param/classes/stk_get_optimizable_parameters.m
/usr/share/octave/packages/stk-2.5.0/param/classes/stk_set_optimizable_parameters.m
/usr/share/octave/packages/stk-2.5.0/param/estim/
/usr/share/octave/packages/stk-2.5.0/param/estim/doc-cache
/usr/share/octave/packages/stk-2.5.0/param/estim/stk_param_estim.m
/usr/share/octave/packages/stk-2.5.0/param/estim/stk_param_getdefaultbounds.m
/usr/share/octave/packages/stk-2.5.0/param/estim/stk_param_gls.m
/usr/share/octave/packages/stk-2.5.0/param/estim/stk_param_init.m
/usr/share/octave/packages/stk-2.5.0/param/estim/stk_param_init_lnv.m
/usr/share/octave/packages/stk-2.5.0/param/estim/stk_param_relik.m