Hubs and Authorities on Japanese Inter-Firm Network: Characterization of Nodes in Very Large Directed Networks

Ohnishi, Takaaki; Takayasu, Hideki; Takayasu, Misako

doi:10.1143/ptps.179.157

Cited by 40 publications

(47 citation statements)

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“…First, we did not identify the SN as a directed networks. In our SN theory, the measures of CAS (such as clustering coefficient, the shortest path length, and others) were used for undirected networks and ignoring link directions although the real-world SN represented supplier-customer relationships with directed links [15,16]. Therefore, a future extension of SN theory will conduct a directed network, and frame SN as a directed CAS.…”

Section: Discussionmentioning

confidence: 99%

“…In this paper, we focused on the supply chains in the central region, which contained a total of 182,538 firms. These data were provided by Tokyo Shoko Research (TSR) and were collected in 2012 [4,5,15,16,44]. Based on geographic distribution, the number of firms that belonging to each prefecture is described in Table 1.…”

Section: Geographical Informationmentioning

confidence: 99%

“…An increasing interest in applying a network analysis approach to understand supply networks (SNs) instead of linear supply chains (SCs) has been observed [2][3][4][5][6][7][8][9][10][11][12][13][14]. SNs have become a new analytic paradigm in SCM, and have been identified as regional clusters [2][3][4]6] or industrial sectors [4,7,8], and are also well known as complex adaptive systems (CAS) [5,[9][10][11][12][13][14][15][16].…”

Section: Introductionmentioning

confidence: 99%

“…The SF nature suggested that an efficient SN should present a power law connectivity distribution, accounting for SN resilience derived by hub firms. Ohnishi et al [15] also identified the SNs as complex networks with directed links. By comparing them with random networks, they revealed that the firms with a large firm-size in the SN tended to have a large PageRank [25], and small authority and hub scores [26].…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Toward a Theory of Industrial Supply Networks: A Multi-Level Perspective via Network Analysis

Zuo

Kajikawa

2017

Entropy

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Abstract:In most supply chains (SCs), transaction relationships between suppliers and customers are commonly considered to be an extrapolation from a linear perspective. However, this traditional linear concept of an SC is egotistic and oversimplified and does not sufficiently reflect the complex and cyclical structure of supplier-customer relationships in current economic and industrial situations. The interactional relationships and topological characteristics between suppliers and customers should be analyzed using supply networks (SNs) rather than traditional linear SCs. Therefore, this paper reconceptualizes SCs as SNs in complex adaptive systems (CAS), and presents three main contributions. First, we propose an integrated framework of CAS network by synthesizing multi-level network analysis from the network-, community-and vertex-perspective. The CAS perspective enables us to understand the advances of SN properties. Second, in order to emphasize the CAS properties of SNs, we conducted a real-world SN based on the Japanese industry and describe an advanced investigation of SN theory. The CAS properties help in enriching the SN theory, which can benefit SN management, community economics and industrial resilience. Third, we propose a quantitative metric of entropy to measure the complexity and robustness of SNs. The results not only support a specific understanding of the structural outcomes relevant to SNs, but also deliver efficient and effective support to the management and design of SNs.

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Section: Discussionmentioning

confidence: 99%

Section: Geographical Informationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Toward a Theory of Industrial Supply Networks: A Multi-Level Perspective via Network Analysis

Zuo

Kajikawa

2017

Entropy

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“…The idea of the opposite PageRank is meaningless in a web network because hyperlinks cannot be inverted, but it has been applied to some other networks. For instance, in the study of an inter-firm network, the ordinary network represents the flow of money, and the opposite network represents the flow of material and service [21].…”

Section: Directed Network Analysis: Hits and Pagerankmentioning

confidence: 99%

Structure and modeling of the network of two-Chinese-character compound words in the Japanese language

Yamamoto

Yamazaki

2014

Physica A: Statistical Mechanics and its Applications

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This paper proposes a numerical model of the network of two-Chinese-character compound words (two-character network, for short). In this network, a Chinese character is a node and a twoChinese-character compound word links two nodes. The basic framework of the model is that an important character gets many edges. As the importance of a character, we use the frequency of each character appearing in publications. The direction of edge is given according to a random number assigned to nodes. The network generated by the model is small-world and scale-free, and reproduces statistical properties in the actual two-character network quantitatively.

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The Structure of Global Inter-firm Networks

Mizuno

Ohnishi

Watanabe

2015

Lecture Notes in Computer Science

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Abstract. We investigate the structure of global inter-firm relationships using a unique dataset containing information on customers, suppliers, licensors, licensees and strategic alliances for each of 412,814 major incorporated non-financial firms in the world. We focus on three different networks: customer-supplier network, licensee-licensor network, and strategic alliance network. In/out-degree distribution of these networks follows a Pareto distribution with an exponent of 1.5. The shortest path length on the networks for any pair of firms is around six links. The networks have a scale-free property.

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Hubs and Authorities on Japanese Inter-Firm Network: Characterization of Nodes in Very Large Directed Networks

Cited by 40 publications

References 0 publications

Toward a Theory of Industrial Supply Networks: A Multi-Level Perspective via Network Analysis

Toward a Theory of Industrial Supply Networks: A Multi-Level Perspective via Network Analysis

Structure and modeling of the network of two-Chinese-character compound words in the Japanese language

The Structure of Global Inter-firm Networks

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