Common vocabulary between pages

[nablator]

Doesn't that look like it's not normalized?

It's not.

a = number of types of a page
b = number of types of another page
c = number of common types

pct = 100*c/(a+b-c)

Maybe averaging c/a and c/b would give a better indicator of how much the pages have in common, giving equal importance to both pages?

pct = 50*(c/a+c/b)

EDIT: no, the results are visually very close.