The traditional decentralized inventory management mode of blood banks and hospitals is more and more difficult to cope with the increasingly normal long periodic blood shortage in China.Therefore,this paper proposes a joint inventory op-timization problem for platelets to reduce blood shortage.An age-based platelet joint inventory optimization model with transshipment is built considering the life cycle,system cost,shortage,and outdating.For comparisons,the traditional decentralized inventory management model and the joint inventory optimization model without transshipment are also built.All the three models are described as bi-objective mixed integer nonlinear programming.According to the characteristics of the proposed mod-els,an improved NSWOA is designed.Numerical experimental results demonstrate the effectiveness of the models and algorithm.The improved NSWOA is superior to NSPSO and NSGWO.The results also show that the joint inventory management mode with transshipment can reduce shortage and outdating,and improve inventory performance under blood shortage situations.
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