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