Collusion in a buyer–seller network formation game

2018 ◽  
Vol 155 ◽  
pp. 445-457
Author(s):  
Gönül Doğan
Keyword(s):  
Network Formation ◽  
Network Formation Game ◽  
Formation Game

Stable Production Networks

2020 ◽  
Vol 22 (02) ◽  
pp. 2040006
Author(s):  
Manish Sarkhel ◽  
Nagarajan Krishnamurthy
Keyword(s):  
Network Formation ◽  
Industrial Clusters ◽  
Network Structures ◽  
Production Networks ◽  
Network Stability ◽  
Second Stage ◽  
Stable Production ◽  
Network Formation Game ◽  
Formation Game ◽  
Number Of Firms

One of the key features which promote growth of industrial clusters is collaboration among firms within such clusters. Collaboration among firms leads to the formation of networks. Stability of these networks is vital to the sustainability of the particular firms. In this paper, we model a supply chain network where a set of downstream firms (players) source inputs from upstream firms (players) who manufacture goods, add value to the products and resell them. The upstream firms produce identical goods and compete on quantities to sell these goods to the downstream firms. The upstream firms procure goods from the downstream firms and sell them. Additionally, upstream firms network among themselves so as to reduce their costs. We model this setting as a two-stage [Formula: see text]-player strategic network formation game. Firms decide their links before competing on quantities in the second stage of the game. Using the defined model, we derive equilibrium quantities and profits as a function of the network structure and number of firms. Following which we analyze the conditions under which different stable network emerge. Our analysis brings forth several interesting insights such as higher connections among downstream players lead to increased profits for upstream manufacturers. From the network stability perspective, we obtain the conditions under which regular, star, etc. network structures are pairwise and bilaterally stable. Furthermore, we also find the conditions under which core–periphery network structures emerge and are stable.

scholarly journals Homophily and Social Norms in Experimental Network Formation Games

Games ◽  
2018 ◽  
Vol 9 (4) ◽  
pp. 83
Author(s):  
Jasmina Arifovic ◽  
Giuseppe Danese
Keyword(s):  
Social Norms ◽  
Network Formation ◽  
Field Studies ◽  
The Other ◽  
Strategy Formulation ◽  
Network Formation Games ◽  
Network Formation Game ◽  
Profile Rating ◽  
Formation Game

Field studies of networks have uncovered a preference to befriend people we perceive as similar according to some dimensions of our identity (“homophily”). Lab studies of network formation games have found that adherence to social norms of reciprocity and inequity aversion are also drivers of network choices. No study so far has attempted to investigate the role of both homophily and social norms in a controlled environment. At the beginning of our experiment, each player fills in a personal profile. Each player then views the profile of all other players and expresses a degree of perceived similarity between his/her profile and the profile of the other player. At this point, a repeated network formation game ensues. We find that: (1) potential homophily considerations triggered by the profile rating task did not measurably change the players’ behavior compared to the baseline; (2) reciprocity plays a significant role in the formulation of the players’ strategies, in particular lowering the probability that the player naively best responds to the network observed in the previous period. We speculate that reciprocation of past choices might be a more “available” aid in strategy-formulation than considerations related to the similarity of the other players.

scholarly journals Interference Aware Routing Game for Cognitive Radio Ad-hoc Networks

2018 ◽  
Vol 3 ◽  
pp. 55-63
Author(s):  
Soodeh Amiri-Doomari ◽  
Ghasem Mirjalily ◽  
Jamshid Abouei
Keyword(s):  
Cognitive Radio ◽  
Ad Hoc ◽  
Network Formation ◽  
Mesh Networks ◽  
Secondary Users ◽  
End To End Delay ◽  
Aggregate Interference ◽  
End To End ◽  
Network Formation Game ◽  
Formation Game

Cognitive radio is a new communication paradigm that is able to solve the problem of spectrum scarcity in wireless networks. In this paper, interference aware routing game, (IRG), is proposed that connects the flow initiators to the destinations. A network formation game among secondary users (SUs) is formulated in which each secondary user aims to maximize its utility, while it reduces the aggregate interference on the primary users (PUs) and the end-to-end delay. In order to reduce the end-to-end delay and the accumulated interference, the IRG algorithm selects upstream neighbors in a view point of the sender. To model the interference between SUs, IRG uses the signal-to-interference-plus noise (SINR) model. The effectiveness of the proposed algorithm is validated by evaluating the aggregate interference from SUs to the PUs and end-to-end delay. A comprehensive numerical evaluation is performed, which shows that the performance of the proposed algorithm is significantly better than the Interference Aware Routing (IAR) using network formation game in cognitive radio mesh networks.

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