Figure 9
From: Application of Quantum Annealing to Nurse Scheduling Problem

Solutions of the proposed three-shift NSP with additional constraints. DT, EN and LN refer to daytime, early night and late night work shift. Among (a–c), the day-off requests are tuned differently as \(g(n,d)=0\) for (a), \(g(1,4)=1\), \(g(2,6)=1.5\) and \(g(3,5)=2\) in (b) and \(g(1,6)=1\), \(g(2,6)=1.5\) and \(g(3,4)=2\) in (c).