Given a set X and a function h:XβΆ{0,1} which labels each
element of X with either 0 or 1, we may define a function h(s) to
measure the similarity of pairs of points in X according to h.
Specifically, for hβ{0,1}X we define h(s)β{0,1}XΓX
by h(s)(w,x):=1[h(w)=h(x)]. This idea can be extended to a set
of functions, or hypothesis space Hβ{0,1}X by defining
a similarity hypothesis space H(s):={h(s):hβH}.
We show that vcβdimension(H(s))βΞ(vcβdimension(H)).Comment: 6 page