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- 大西 立顕
- キヤノングローバル戦略研究所
書誌事項
- タイトル別名
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- Mathematical Analysis of Economic Networks
- ケイザイ ネットワーク ノ スウリ
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抄録
Firms build business relationships through economic activities. PageRank algorithm and motif analysis are applied to Japanese inter-firm network which consists of about one million firms and four million directed links. We show scale-free degree distribution and similarities between degree and PageRank. By comparing with randomized networks, we find that PageRank correlates significantly with the growth rate which is hardly observed with other quantities. We also find that Vshaped triads are network motifs, while feedforward and feedback loop are anti-motifs. By defining roles in the subgraph according to structural equivalence, we detect the significance profile of roles characterizing the industry sector. The taxonomy of industries obtained from the profiles is economically meaningful. These empirical findings may serve to provide an easily interpretable view of the entire inter-firm network and to improve the efficiency and safety of economic systems.
収録刊行物
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- 横幹
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横幹 7 (2), 100-107, 2013
特定非営利活動法人 横断型基幹科学技術研究団体連合
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詳細情報 詳細情報について
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- CRID
- 1390282680267149568
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- NII論文ID
- 130005126996
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- NII書誌ID
- AA12434320
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- ISSN
- 21896399
- 18817610
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- NDL書誌ID
- 024949222
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- 本文言語コード
- ja
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- データソース種別
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- JaLC
- NDL
- CiNii Articles
- KAKEN
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- 抄録ライセンスフラグ
- 使用不可