Work
The tier split
Any split that adds to n is usable, and the correction step is what makes it add up after rounding. The topic's own tags are placed first and the remaining slots are divided, so the split describes the whole set rather than the slots that were free.
The Formula
broad = 0.25 n, mid = 0.45 n, niche = 0.30 n, corrected so the three add up to n
Any split that adds to n is usable, and the correction step is what makes it add up after rounding. The topic's own tags are placed first and the remaining slots are divided, so the split describes the whole set rather than the slots that were free.
| Symbol | Meaning | Unit | Notes |
|---|---|---|---|
| n | Tags wanted | count | How many tags the set should contain. |
| n_b | Broad tags | count | Slots filled from the million-plus tier. |
| n_m | Mid tags | count | Slots filled from the hundred-thousand tier. |
| n_t | Niche tags | count | Slots filled from the smallest tier. |
What Each Symbol Means
ncount
Tags wanted
How many tags the set should contain.
n_bcount
Broad tags
Slots filled from the million-plus tier.
n_mcount
Mid tags
Slots filled from the hundred-thousand tier.
n_tcount
Niche tags
Slots filled from the smallest tier.
See It Worked With Real Numbers
A formula on its own does not tell you which number goes where. The how to choose hashtags page applies this equation to a concrete case, shows every intermediate step, and names the mistakes that produce a wrong answer even when the algebra is right.
Where This Formula Appears
This equation is the working core of How To Choose Hashtags, filed under Everyday Life. Every number the guide produces comes from substituting into this one line.