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Table 2 Rules for transitive closure calculationa

From: Identifying direct temporal relations between time and events from clinical notes

- If A overlap B, then B overlap A

- If A before B, then B after A

- If A after B, then B before A

- If A overlap B, and B overlap C, then A overlap C

- If A before B, and B before C, then A before C

- If A before B, and B overlap C, then A before C

- If A overlap B, and B before C, then A before C

  1. aIt is possible that the rules may produce false positive or false negative temporal relations. For instance, A and C may not overlap even when A overlap B and B overlap C. The false positive relations are removed and missing relations are added during the manual annotation process by the domain experts
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BMC Medical Informatics and Decision Making

ISSN: 1472-6947

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