Displays the value of the variational lower bound (ELBO) at the current iteration.
flash_verbose_elbo(curr, prev, k)A character string, suitable for printing progress updates.
The flash_fit object from the current iteration.
The flash_fit object from the previous iteration.
Only used during sequential backfits (that is, calls to
flash_backfit where extrapolate = FALSE). It then
takes the index of the factor/loadings pair currently being optimized.
This function is an example of a function that may be passed to
parameter fns in function flash_set_verbose to
customize the output that is printed after each greedy or backfitting
iteration. See flash_set_verbose for details and examples.
flash_verbose_elbo_diff,
flash_verbose_max_chg,
flash_verbose_max_chg_L,
flash_verbose_max_chg_F