Supply chains are crucial for the functioning of the global economy, but disruptions to these networks can be costly. While centrally managed supply chains invest in ensuring their resilience, decentralized supply chains rely on the self-interest of individual components to maintain overall resilience. In this study, authors Victor Amelkin and Rakesh Vohra examine the incentives that independent self-interested agents have in forming a resilient supply chain network in the face of production disruptions and competition. The authors develop a model where competing suppliers face yield uncertainty (delivering less than ordered) and congestion (lead time uncertainty or "soft" supply caps). On the other hand, competing retailers must make decisions about which suppliers to link with based on both price and reliability. The researchers find that when there is only yield uncertainty, resulting supply chain networks tend to be sparse. Retailers concentrate their links on a single supplier instead of diversifying their supply base to mitigate yield uncertainty. This counterintuitive behavior occurs because retailers benefit from supply variance, suggesting that competition amplifies output uncertainty. When congestion is also considered in the model, the resulting networks become denser and resemble bipartite expander graphs proposed in previous supply chain literature. This finding provides an example of endogenous formation of resilient supply chain networks without explicitly encoding resilience in payoffs. Finally, the study reveals that investments made by suppliers to improve yield can actually make them worse off. High production output saturates the market, leading to lower prices and profits for all participants involved. Overall, this research sheds light on how self-interested agents form resilient supply chain networks under various uncertainties and competition dynamics. It highlights important considerations for both suppliers and retailers in managing disruptions and maintaining efficient operations within decentralized supply chains.
Supply chains are important for the global economy, but if they get disrupted it can be expensive.
Centrally managed supply chains focus on being strong and prepared, while decentralized supply chains rely on each person looking out for themselves.
The authors of a study looked at why people in supply chains make choices based on their own interests.
They used a model to see how uncertainty and congestion affect relationships between suppliers and retailers.
When there is only uncertainty, the connections in the network are not very strong. But when there is congestion, the connections become stronger and more like a pattern called a bipartite expander graph.
Investments by suppliers to try to improve their products can sometimes make them worse off because too many people are already selling similar things.
This research helps us understand how people in supply chains make decisions when there are uncertainties and competition."
Understanding the Incentives of Self-Interested Agents in Decentralized Supply Chains
Supply chains are essential for the functioning of the global economy, but disruptions to these networks can be costly. While centrally managed supply chains invest in ensuring their resilience, decentralized supply chains rely on the self-interest of individual components to maintain overall resilience. In a recent study, authors Victor Amelkin and Rakesh Vohra examine how self-interested agents form resilient supply chain networks under various uncertainties and competition dynamics. This research provides important considerations for both suppliers and retailers in managing disruptions and maintaining efficient operations within decentralized supply chains.
Yield Uncertainty
The researchers develop a model where competing suppliers face yield uncertainty (delivering less than ordered) and congestion (lead time uncertainty or "soft" supply caps). On the other hand, competing retailers must make decisions about which suppliers to link with based on both price and reliability. The researchers find that when there is only yield uncertainty, resulting supply chain networks tend to be sparse. Retailers concentrate their links on a single supplier instead of diversifying their supply base to mitigate yield uncertainty. This counterintuitive behavior occurs because retailers benefit from supply variance, suggesting that competition amplifies output uncertainty.
Congestion Considerations
When congestion is also considered in the model, the resulting networks become denser and resemble bipartite expander graphs proposed in previous supply chain literature. This finding provides an example of endogenous formation of resilient supply chain networks without explicitly encoding resilience in payoffs. Furthermore, investments made by suppliers to improve yield can actually make them worse off due to market saturation leading to lower prices and profits for all participants involved.
Conclusion
Overall, this research sheds light on how self-interested agents form resilient supply chain networks under various uncertainties and competition dynamics. It highlights important considerations for both suppliers and retailers in managing disruptions and maintaining efficient operations within decentralized supply chains
Supply chains are the backbone of the global economy. Disruptions to them can be costly. Centrally managed supply chains invest in ensuring their resilience. Decentralized supply chains, however, must rely upon the self-interest of their individual components to maintain the resilience of the entire chain. We examine the incentives that independent self-interested agents have in forming a resilient supply chain network in the face of production disruptions and competition. In our model, competing suppliers are subject to yield uncertainty (they deliver less than ordered) and congestion (lead time uncertainty or, "soft" supply caps). Competing retailers must decide which suppliers to link to based on both price and reliability. In the presence of yield uncertainty only, the resulting supply chain networks are sparse. Retailers concentrate their links on a single supplier, counter to the idea that they should mitigate yield uncertainty by diversifying their supply base. This happens because retailers benefit from supply variance. It suggests that competition will amplify output uncertainty. When congestion is included as well, the resulting networks are denser and resemble the bipartite expander graphs that have been proposed in the supply chain literature, thereby, providing the first example of endogenous formation of resilient supply chain networks, without resilience being explicitly encoded in payoffs. Finally, we show that a supplier's investments in improved yield can make it worse off. This happens because high production output saturates the market, which, in turn lowers prices and profits for participants.
