Shared fitness
where:
T'
=
new members, added on at a time, starting with empty set
pt(a,a')
=
as before
pt(a'',a')
= {
0.0 if
a''
loses against
a'
0.5 if
a''
and
a'
tie
1.0 if
a''
wins against
a'
l(a')
=
number of games lost by
a'