On the Efficiency and Stbility of Networks Formation

论网络组建的效率和稳定性

• 批准号: 10630013
• 负责人: KAWAMATA Kunio
• 金额: $ 1.54万
• 依托单位: Keio University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 1998
• 资助国家: 日本
• 起止时间: 1998 至 1999
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-10630013/
• 关键词: contribution of a Firm; free Entry; excessive entry; auction; Supermodularity; network; complete graph; coalition formation; 独占的競争; 対安定性; インセンティブ; 効率性; 垂直的統合; 接続料金; 参入企業数

In the article ''On the Efficiency and Stability of Networks" we examined the relationships between the incentive for the links formation and the efficiency of the resulting networks. Although it is desirable that networks are both efficient and stable, these two objectives are often incompatible. Imposing reasonable requirements we give conditions under which this conflict is avoided.In the article "Optimal Entry and Marginal Contribution of Players" we defined the concept of the "marginal contribution of a firm" as the difference between the maximum welfare with the firm and that without it. It is established that(I) in the competitive market, the contribution of a firm equals the profit of the firm,(ii) in the monopolistic competition market, the contribution of the firm less than the profit, and that(iii) entry is excessive in such a market.

在“论网络的效率和稳定性”这篇文章中，我们研究了链接形成的激励与由此产生的网络的效率之间的关系。虽然人们希望网络既高效又稳定，但这两个目标往往是不相容的。在《最优进入与参与者边际贡献》一文中，我们将“企业边际贡献”定义为有企业与无企业时的最大福利之差，并证明了：（1）在竞争市场中，企业的边际贡献等于企业的利润，（ii）在垄断竞争市场中，企业的贡献小于利润，以及（iii）在这样的市场中，进入是过度的。

项目成果

川又邦雄、山方竜二: "企業の垂直分離・統合とその規制"三田学会雑誌. 91巻3号. 44-69 (1998)

Kunio Kawamata，Ryuji Yamakata：“公司的垂直分离/整合及其监管”三田学会杂志，第 91 卷，第 3. 44-69 期（1998 年）。

Kunio Kawamata and Ryuji Yamagata: "On the Regulation of Vertical Separation Integration"Mita Journal of Economics. Vol.91-3(in Japanese). 44-69 (1998)

Kunio Kawamata 和 Ryuji Yamagata：“论纵向分离一体化的调节”三田经济学杂志。

Kunio Kawamata and Yumiko Baba: "Auction Theory and Its Practices"Government Auditing Review. Vol.5. 35-44 (1998)

Kunio Kawamata 和 Yumiko Baba：“拍卖理论及其实践”政府审计审查。

Kunio Kawamata: "Optimal Entry and Marginal Contribution of a Player in A. Alkan, C.D. Aliprantis and N.C. Yannelis (eds)"Current Trends in Economics. 233-254 (1999)

Kunio Kawamata：“A. Alkan、C.D. Aliprantis 和 N.C. Yannelis 中玩家的最佳进入和边际贡献（编辑）”当前经济学趋势。

Kunio Kawamata: "Auction Theory and Its Practices"Government Auditing Review. Vol.5. 35-44 (1998)

Kunio Kawamata：“拍卖理论及其实践”政府审计审查。