Skip to main content

Advertisement

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