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Table 3 Weighting procedure of the atomic similarities (Appendix)

From: Medical record linkage in health information systems by approximate string matching and clustering

Weights

BN

MN

MN/BN

BN/MN

FN

DB

Case 1

A(MN) = {0} and B(MN) = {0} then

      

   If aS (BN) <T or aS (FN) <T then

2/4

-

-

-

1/4

1/4

Else

2/6

-

-

-

1/6

3/6

Case 2

A(MN)! = {0} and B(MN) = {0}

      

(1) If aS (MN/BN) <aS (BN) then

      

   If aS (BN) <T or aS (FN) <T then

2/4

-

-

-

1/4

1/4

Else

2/6

-

-

-

1/6

3/6

(*) Else

1/6

-

1/6

-

1/6

3/6

Case 3

B(MN)! = {0} and A(MN) = {0}, switch A and B and go to (1)

Case 4

A(MN)! = {0} and B(MN)! = {0}

      

   If aS (BN/MN) <aS (BN) and aS (MN/BN) <aS (MN) then

2/7

1/7

-

-

1/7

3/7

   If aS (BN/MN) >aS (BN) and aS (MN/BN) <aS (MN) then

1/7

1/7

-

1/7

1/7

3/7

   If aS (BN/MN) < aS(BN) and aS (MN/BN) >aS (MN) then

1/7

1/7

1/7

-

1/7

3/7

   If aS (BN/MN) >aS (BN) and aS (MN/BN) >aS (MN) then

1/8

1/8

1/8

1/8

1/8

3/8