noun
ELSE rule; completion rule
In computing, a rule that specifies what to do when no other condition is met; often used in expert systems or decision logic.
このエキスパートシステムでは、補完規則が最後に評価される。
In this expert system, the ELSE rule is evaluated last.
Compound of 補完 (complementation) and 規則 (rule). The exact origin as a computing term is uncertain, but it likely derives from English 'ELSE rule' in programming or AI contexts.