duplication rate

1) the number of entities represented by multiple records, i.e., groups (G), compared to the total number of entities represented in a file, i.e., uniquely significant records (NU); the d. r. is measured for a sample of records which are matched manually; 2) redundancy rate. [Cf. Ch. 3, §2, ¶1, Ch. 2, §2, ¶7]