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Table 3 Causality terms and resulting values for causality extraction between Hepatitis C and Hepatocellular Carcinoma

From: Disease causality extraction based on lexical semantics and document-clause frequency from biomedical literature

Causality Term

\( \upalpha \)

DF

CF

DCF

\( \upalpha \bullet \mathrm{D}\mathrm{C}\mathrm{F} \)

affect

1.00

1

1

0.30

0.30

cause

1.00

26

27

37.63

37.63

contribute

0.75

1

1

0.30

0.23

develop

1.00

10

10

10.41

10.41

due to

1.00

8

8

7.63

7.63

educe

0.75

1

1

0.30

0.23

effect

1.00

3

3

1.81

1.81

induce

0.75

1

4

0.70

0.52

infect

0.75

4

4

2.80

2.10

lead to

0.75

10

10

10.41

7.81

link

0.25

1

1

0.30

0.08

relate

0.25

21

21

28.19

7.05

result

1.00

1

1

0.30

0.30

rise

1.00

1

1

0.30

0.30

secondary to

0.50

1

1

0.30

0.15

triggered by

1.00

1

1

0.30

0.30

\( \upalpha \mathrm{DCFC}={\mathrm{w}}_{\mathrm{AB}}-{\mathrm{w}}_{\mathrm{BA}}=76.84-8.63=68.21 \)