Daylight bit count nomenclature


  1. Fingerprint size, n
    S
  2. Bits on in A, A
    A
  3. Bits on in B, B
    B
  4. On-bits unique to A, a
    A intersect Bc
  5. On-bits unique to B, b
    Ac intersect B
  6. On-bits in common between A and B, c
    Aintersect B
  7. Off-bits in common between A and B, d  
    Ac intersect Bc
  8. Total bits in common, c + d
    (A intersect B) union (Ac intersect Bc)
  9. Total on-bits a + b + c
    Denominator in Tanimoto index
    A union B
  10. Total unique on-bits, a + b
    Minimised to break ties
    (Ac intersect B) union (A intersect Bc)
Venn Diagram


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