Table 4.

Notation used in this paper.

Notation	Interpretation
s	An index to count records in the real sample
t	An index to count records in the synthetic sample
N	The number of records in the true population
fs	The equivalence class group size in the real sample for a particular record s in the real sample. The equivalence class is defined as the set of records with the same values on the quasi-identifiers.
Fs	The equivalence group size in the population that has the same quasi-identifier values as record s in the real sample. The equivalence class is defined as the set of records with the same values on the quasi-identifiers.
n	The number of records in the (real or synthetic) sample
Is	A binary indicator of whether record s in the real sample matches a record in the synthetic sample
Rs	A binary indicator of whether the adversary would learn something new if record s in the real sample matches a record in the synthetic sample
k	Number of quasi-identifiers
λ	Adjustment to account for errors in matching and a verification rate that is not perfect
L	The minimal percentage of sensitive variables that need to be similar between the real sample and synthetic sample to consider that an adversary has learned something new