Daylight bit count nomenclature
Fingerprint size,
n
S
Bits on in A,
A
A
Bits on in B,
B
B
On-bits unique to A,
a
A
B
c
On-bits unique to B,
b
A
c
B
On-bits in common between A and B,
c
A
B
Off-bits in common between A and B,
d
A
c
B
c
Total bits in common,
c + d
(
A
B
)
(
A
c
B
c
)
Total on-bits
a + b + c
Denominator in Tanimoto index
A
B
Total unique on-bits,
a + b
Minimised to break ties
(
A
c
B
)
(
A
B
c
)
Daylight Chemical Information Systems, Inc.
support@daylight.com
John Bradshaw.
