# Research on Evaluation on Agility of Agile Supply Chain Network Based on Complex Network Theory

Authors: Nai-Ru Xu; Jia-Bao Liu
Journal: Mathematical Problems in Engineering
 (2015)

---

## Abstract

The paper tries to add the network structure factors of agile supply chain network into agility evaluation. The paper firstly presents three concepts including node strength centrality, betweenness centrality, and network centrality. They are used to calculate the weight of node enterprises in the agile supply chain network. And then, a series of agility indicators are designed to evaluate agility of agile supply chain network. AHP is used to calculate the weight of the indicators. Next, these indicators are used to get initial agility evaluation matrix by means of Delphi method, Data Mining, and so forth. Then FCE is used to calculate the membership degree on agility of node enterprises by combining the evaluation matrix with the weight of indicators. Last, the evaluation result of comprehensive agility of agile supply chain network is calculated on the basis of considering the weight of node enterprises. This method can reflect the effect which the network structure of supply chain network makes on the agility of the supply chain network. It is a complement to the current evaluation methods of agility.


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## Body

## 1. Introduction

The progress of information technology and the development of globalization make the supply chain system more dynamic and complex. The supply chain system is a type of complex network consisting of the related entities. It includes many of suppliers, manufacturers, retailers, and customers. In the supply chain system, a new entity enters the system, which creates new connections between entities. Meanwhile, lots of interaction and interdependency relationships exist between different entities, progresses, and resources in the supply chain system. These interaction and interdependency relationships are highly nonlinear, multiscale, and complex. They cause interaction between the network structure and the function of the supply chain network, which leads to the evolution and the self-organization movement of the supply chain network [1].From the view of complex network, the node represents business unit which can make decision independently; the link between nodes represents exchange relationship and underlined order. Thus, the complex network model can be constructed to mirror the supply chain system. The complex network model can reflect the characteristics of the efficient supply chain system [2, 3]. This assumption has been realized and studied by some researchers [4–7].The current changing market environment and dynamic evolution of business organization require that the supply network should become more agile so that the unpredicted market demand can be efficiently and effectively satisfied by means of dynamic, adaptive, separable network evolution and movement. Meanwhile, the unpredictable changes in the internal and external environment require that the supply chain system possesses the corresponding responsive ability [8]. However, the network structure decided by the way of organization and the approach of link between individual nodes, such as regular network, random network, and scale-free network, can affect the responsive speed and ability of the supply network, accordingly affecting the agility of the supply chain. In other words, the network structure affects the function and the behavior; at the same time, agility is a kind of attribute of the function and the behavior. Thus, the network structure is related to the agility closely. So, the research on the agility of the supply chain system must consider the state of network structure [9]. In the research literature on agility, there are two ways to follow: one way is to synthesize the evaluation results of agility of each individual node in the supply chain system to get the agility of the supply chain [10, 11]. The defect of this way is that the evaluation result cannot reflect the effect which can be made by the whole network structure factors on the agility of the supply chain system. Another way is to view the supply chain system as an entirety and use a series of indicators assessing the entirety to evaluate the agility level in order to get the agility of the whole supply chain [12]. This approach seems to consider the comprehensiveness and wholeness but has great subjectivity. Because of lack of indicators which can accurately reflect the effect of the whole network structure, it is hard to get a scientific and reasonable evaluation result.The paper adds the network structure factors into the agility evaluation of the supply chain system and meanwhile considers the types of node enterprises, the weight of node enterprises, and the weight of indicators and then obtains the comprehensive evaluation result finally. This method combines the analytic hierarchy process (AHP) with the fuzzy comprehensive evaluation (FCE) method based on incorporating the network structure factors into constructing a comprehensive evaluation method system in order to get the comprehensive agility evaluation result of the agile supply chain network.


## 2. The Concept of Agility

From the view of enterprise agility, the meaning of agility differs from the types of enterprises. The meaning of agility of the whole supply chain network is also different from the agility of single enterprise.First, we give the definitions of agility of different types of node enterprises.The agility of the node enterprise as a supplier is the ability of making response to sudden and unexpected changes [10].The agility of the node enterprise as a manufacturer has two typical definitions. One definition is the ability of quick switching among different product models and production lines, which focuses on flexibility of production processes and procedures in order to respond to customer needs real-time and ideally [13]. Another definition is that enterprises quickly reconstruct the existing processes and explore new processes to follow after the demand trend in order to improve the ability of surviving in the highly dynamic competitive market environment [14].The agility of the node enterprise as a distributor has two typical definitions. One definition is the surviving and development ability which can make response to quick changing and unexpected market by encouraging customers to engage in designing product and service in a competitive environment [15]. Another definition is the ability of providing low cost and high quality product with the short lead time and different quantity in order to create value for customers by customization [16].Second, the definition of agility of the whole supply chain network is a kind of ability that the whole supply chain and its members rapidly form network alliance and carry out operations in order to deal with dynamic and volatile customer demand [17].All the above definitions provide guides for designing different agility indicators for different types of node enterprises and the wholeness of the supply chain.


## 3. Research Approach

In the current research on agility evaluation of agile supply chain network, there are researches on the whole supply chain network and on the individual node enterprise. The paper deems that we should consider not only the network entirely and dynamically but also the position and influence of node enterprises in the agile supply chain network because the position and influence of node enterprises are different from each other. The agility influence of node enterprises is not the same in the whole supply chain network. So, the paper designs an agility evaluation model mixing with the influence of node enterprises on agile supply chain network. The research procedure includes four stages as follows.First, use complex network theory to calculate three parameters in the agile supply chain network. They are node strength centrality, betweenness centrality, and network centrality. Then get the weight of individual node enterprises in agile supply chain network through processing these three parameters comprehensively.Second, categorize the node enterprises into three basic types: suppliers, manufacturers, and distributors, and then design different evaluation indicators according to the types of node enterprises and use AHP to calculate the weight of indicators.Third, use fuzzy comprehensive evaluation (FCE) to deal with the initial evaluation value of agility indicators which is produced by means of Delphi method, Data Mining, and so forth, and then use the weight of indicators to process the evaluation result.Last, combine the agility evaluation result of node enterprises with the weight of node enterprises in order to calculate the comprehensive agility of the whole supply chain network. This method considers not only the agility of different types of node enterprises but also the effect which network structure makes on the agility. The schematic diagram of technology roadmap is as shown in Figure1.Figure 1
The schematic diagram of technology roadmap in the research. Note: the solid line rectangle represents indicators; the dotted line rectangle represents methods; the ellipse represents numerical value.


## 4. The Procedure of Agility Evaluation

### 4.1. The Definition of Three Parameters

Because different node enterprises have different network structure relationship,  consequently, the node enterprises have importance and influence different from each other accordingly. The paper deploys the research road from each individual node to the whole network and obtains the influence level of node enterprise through analyzing the network structure relationship of the individual node. This kind of network structure relationship is embodied in the following three parameters.Three parameters of node enterprises in agile supply chain network are designed by means of complex network theory [18]. They are node strength centrality, betweenness centrality, and network centrality.Definition 1 (node strength centrality,S(i)).
Node strength centrality is that node strength of one node accounts for the proportion of the sum of node strength of all nodes. Node strength centrality can reflect the extent to which the responsive ability of one node can make a contribution to the responsive ability of the whole supply chain. The formula is as shown in(1)Si=si∑i=1Nsi,where si=∑j∈Ωiaijwij, where wij means the weight of the edge (i,j) and aij is an adjacency matrix element; if node vi links to node vj,aij is 1; otherwise, aij equals 0. Ωi means the set of neighbor nodes of node vi.Definition 2 (betweenness centrality,B(i)).
Betweenness centrality is that the number of shortest roads going through nodei accounts for the proportion of total number of shortest roads in the whole network, which represents the contribution which node i makes to keep the network connective. The formula is as shown in(2)Bi=∑x≠yaxyiaxy,where axy means the number of all shortest roads between node x and node y in the whole network and axy(i) means the number of the shortest roads between node x and node y which go through node i.Definition 3 (network centrality,N(i)).
Network centrality of nodei is a reciprocal of the sum of all distances from node i to all other nodes, which represents position feature in the network; the bigger the number is, the closer node i is to the network center; in other words, the influence of node i is more obvious. The formula is as shown in(3)Ni=1∑j=1Nβij,where βij means the number of edges being contained in the shortest path from node i to node j and N means the total number of nodes in the network.


### 4.2. The Evaluation Model of the Weight of Node Enterprise

The basic idea of the model is to treat each node enterprise as a strategy and treat the indicators being used to evaluate enterprise influence as the properties of the strategy. The gap between the strategy of a certain enterprise and the best strategy or the worst strategy can reflect the influence level of the enterprise.First, establish influence indicator matrix of node enterprises in agile supply chain network.Suppose that there areN enterprises in the agile supply chain network; the number of influence indicators is s, so we can create a set of strategies U=U1,…,UN and a set of indicators V=V1,…,VS. Ui(Vj) means influence indicator j of enterprise i. Influence indicator matrix is as shown in(4)G=U1V1⋯U1Vs⋮⋱⋮UnV1⋯UnVs.Because indicator dimensions are different from each other, they need to be standardized:(5)uij=UiVj∑i=1NUiVj.After standardization, the influence indicator matrix is(6)G∗=uijN∗s.Second, according toG∗, we get the best strategy indicator set I+ and the worst strategy indicator set I-: (7)I+=max⁡u11,…,uN1,…,max⁡u1s,…,uNs=u1max,…,usmax,(8)I-=minu11,…,uN1,…,minu1s,…,uNs=u1min,…,usmin.Third, calculate the gap between each strategy indicator and the best strategy indicator or the worst strategy indicator:(9)Mi+=∑j=1suij-ujmax,Mi-=∑j=1suij-ujmin.Fourth, calculate proximityTi to the best strategy and use Ti to measure the influence level of enterprise i:(10)Ti=Mi-Mi-+Mi+.The influence level of enterprisei is proportional to proximity Ti.Finally, we get the weight of the node enterprisei:(11)qi=Ti∑i=1nTi.


### 4.3. The Comprehensive Agility Evaluation

Some of the influence factors on agility of supply chain network can be quantitatively evaluated directly and some of them cannot. Fuzzy comprehensive evaluation (FCE) is a combination of qualitative and quantitative features [19–21]. It can reflect the agility of various influence factors comprehensively. On the basis of comprehensive influence indicators evaluation of node enterprises, take enterprises influence indicators as parameters being used to build the model of evaluating agility of supply chain network.According to fuzzy comprehensive evaluation theory, defineAi=ai,1,ai,2,…,ai,n as a set of influence factor indicators of agility of node enterprise i.Evaluation levels of all node enterprises are the same, which can be defined asL=l1,l2,…,lm. For each influence factor’s indicators in Ai, a team of experts give fuzzy evaluation by means of a set of factor indicators and get evaluation matrix (n×m) of node enterprise i:(12)Ei=ei,11ei,12⋯ei,1mei,21ei,22⋯ei,2m⋮⋮⋮⋮ei,n1ei,n2⋯ei,nm.There is the number of experts that deem that factorai,x makes ly level effect on agility.e
i
,
x
y is the ratio that the above experts account for the proportion of all experts in the team, which reflects membership degree of ai,x on ly.Meanwhile, the team grade the factor indicators and use AHP [22] to analyze the weight of factor indicators, forming a weight matrix (1×n) of factor indicators on agility:(13)Fi=fi,1,fi,2,…,fi,n.According to the evaluation matrixEi and the weight matrix Fi, we can obtain the evaluation result on agility of node enterprise i:(14)Zi=Fi·Ei.The evaluation results of all node enterprises form evaluation matrix(n×m) of agility for agile supply chain network; the matrix is shown as E∗:(15)E∗=Z1,Z2,…,ZN.According to formula (10), we can calculate the weight coefficient, (11), and get enterprise weight matrix Q∗:(16)Q∗=q1,q2,…,qn.At last, we obtain the comprehensive agility evaluation result of agile supply chain network:(17)Z∗=Q∗·E∗.


## 4.1. The Definition of Three Parameters

Because different node enterprises have different network structure relationship,  consequently, the node enterprises have importance and influence different from each other accordingly. The paper deploys the research road from each individual node to the whole network and obtains the influence level of node enterprise through analyzing the network structure relationship of the individual node. This kind of network structure relationship is embodied in the following three parameters.Three parameters of node enterprises in agile supply chain network are designed by means of complex network theory [18]. They are node strength centrality, betweenness centrality, and network centrality.Definition 1 (node strength centrality,S(i)).
Node strength centrality is that node strength of one node accounts for the proportion of the sum of node strength of all nodes. Node strength centrality can reflect the extent to which the responsive ability of one node can make a contribution to the responsive ability of the whole supply chain. The formula is as shown in(1)Si=si∑i=1Nsi,where si=∑j∈Ωiaijwij, where wij means the weight of the edge (i,j) and aij is an adjacency matrix element; if node vi links to node vj,aij is 1; otherwise, aij equals 0. Ωi means the set of neighbor nodes of node vi.Definition 2 (betweenness centrality,B(i)).
Betweenness centrality is that the number of shortest roads going through nodei accounts for the proportion of total number of shortest roads in the whole network, which represents the contribution which node i makes to keep the network connective. The formula is as shown in(2)Bi=∑x≠yaxyiaxy,where axy means the number of all shortest roads between node x and node y in the whole network and axy(i) means the number of the shortest roads between node x and node y which go through node i.Definition 3 (network centrality,N(i)).
Network centrality of nodei is a reciprocal of the sum of all distances from node i to all other nodes, which represents position feature in the network; the bigger the number is, the closer node i is to the network center; in other words, the influence of node i is more obvious. The formula is as shown in(3)Ni=1∑j=1Nβij,where βij means the number of edges being contained in the shortest path from node i to node j and N means the total number of nodes in the network.


## 4.2. The Evaluation Model of the Weight of Node Enterprise

The basic idea of the model is to treat each node enterprise as a strategy and treat the indicators being used to evaluate enterprise influence as the properties of the strategy. The gap between the strategy of a certain enterprise and the best strategy or the worst strategy can reflect the influence level of the enterprise.First, establish influence indicator matrix of node enterprises in agile supply chain network.Suppose that there areN enterprises in the agile supply chain network; the number of influence indicators is s, so we can create a set of strategies U=U1,…,UN and a set of indicators V=V1,…,VS. Ui(Vj) means influence indicator j of enterprise i. Influence indicator matrix is as shown in(4)G=U1V1⋯U1Vs⋮⋱⋮UnV1⋯UnVs.Because indicator dimensions are different from each other, they need to be standardized:(5)uij=UiVj∑i=1NUiVj.After standardization, the influence indicator matrix is(6)G∗=uijN∗s.Second, according toG∗, we get the best strategy indicator set I+ and the worst strategy indicator set I-: (7)I+=max⁡u11,…,uN1,…,max⁡u1s,…,uNs=u1max,…,usmax,(8)I-=minu11,…,uN1,…,minu1s,…,uNs=u1min,…,usmin.Third, calculate the gap between each strategy indicator and the best strategy indicator or the worst strategy indicator:(9)Mi+=∑j=1suij-ujmax,Mi-=∑j=1suij-ujmin.Fourth, calculate proximityTi to the best strategy and use Ti to measure the influence level of enterprise i:(10)Ti=Mi-Mi-+Mi+.The influence level of enterprisei is proportional to proximity Ti.Finally, we get the weight of the node enterprisei:(11)qi=Ti∑i=1nTi.


## 4.3. The Comprehensive Agility Evaluation

Some of the influence factors on agility of supply chain network can be quantitatively evaluated directly and some of them cannot. Fuzzy comprehensive evaluation (FCE) is a combination of qualitative and quantitative features [19–21]. It can reflect the agility of various influence factors comprehensively. On the basis of comprehensive influence indicators evaluation of node enterprises, take enterprises influence indicators as parameters being used to build the model of evaluating agility of supply chain network.According to fuzzy comprehensive evaluation theory, defineAi=ai,1,ai,2,…,ai,n as a set of influence factor indicators of agility of node enterprise i.Evaluation levels of all node enterprises are the same, which can be defined asL=l1,l2,…,lm. For each influence factor’s indicators in Ai, a team of experts give fuzzy evaluation by means of a set of factor indicators and get evaluation matrix (n×m) of node enterprise i:(12)Ei=ei,11ei,12⋯ei,1mei,21ei,22⋯ei,2m⋮⋮⋮⋮ei,n1ei,n2⋯ei,nm.There is the number of experts that deem that factorai,x makes ly level effect on agility.e
i
,
x
y is the ratio that the above experts account for the proportion of all experts in the team, which reflects membership degree of ai,x on ly.Meanwhile, the team grade the factor indicators and use AHP [22] to analyze the weight of factor indicators, forming a weight matrix (1×n) of factor indicators on agility:(13)Fi=fi,1,fi,2,…,fi,n.According to the evaluation matrixEi and the weight matrix Fi, we can obtain the evaluation result on agility of node enterprise i:(14)Zi=Fi·Ei.The evaluation results of all node enterprises form evaluation matrix(n×m) of agility for agile supply chain network; the matrix is shown as E∗:(15)E∗=Z1,Z2,…,ZN.According to formula (10), we can calculate the weight coefficient, (11), and get enterprise weight matrix Q∗:(16)Q∗=q1,q2,…,qn.At last, we obtain the comprehensive agility evaluation result of agile supply chain network:(17)Z∗=Q∗·E∗.


## 5. Case Analysis

There is an agile supply chain network including three suppliers of the first class, two suppliers of the second class, three manufacturers, and four distributors. The network structure of agile supply chain is shown as Figure2.Figure 2
The structure diagram of the agile supply chain network. Note:S1 means the supplier of the 1st class, S2 means the supplier of the 2nd class, M means manufacturer, D means distributor, and the edge weight means the responsive ability between node enterprises; the responsive ability comes from a comparison between the same type of enterprises; there is no comparison between different types of enterprises.Step 1.
Use formulas (1), (2), and (3) to calculate node strength centrality S(i), betweenness centrality B(i), and network centrality N(i) of node enterprises, as shown in Table 1.
The data in Table1 can be processed by unifying indicator dimensions; then get unified dimensional influence indicator matrix G∗:(18)G∗=0.063330.000000.076710.020000.000000.072450.083330.000000.072450.126670.238460.108680.206670.261540.108680.066670.153850.086940.166670.269230.118560.100000.076920.081510.016670.000000.065210.016670.000000.065210.083330.000000.081510.050000.000000.06210.
According to the standardized matrixG∗, we can use the best strategy indicator set I+, (7), and the worst strategy indicator set I-, (8), to calculate the gap between each strategy and the best strategy or the worst strategy:(19)I+=0.206670.269230.11856,I-=0.016670.000000.06210.Then calculate proximity Ti (10) to the best strategy; finally calculate the weight of each node enterprise, as shown in Table 2.Table 1
The data of influence indicators of node enterprises in the agile supply chain network.
ID
S
(
i
)
B
(
i
)
N
(
i
)
1
0.063333
0.000000
0.029412
2
0.020000
0.000000
0.027778
3
0.083333
0.000000
0.027778
4
0.126667
0.469697
0.041667
5
0.206667
0.515152
0.041667
6
0.066667
0.303030
0.033333
7
0.166667
0.530303
0.045455
8
0.100000
0.151515
0.031250
9
0.016667
0.000000
0.025000
10
0.016667
0.000000
0.025000
11
0.083333
0.000000
0.031250
12
0.050000
0.000000
0.023810Table 2
The weight of node enterprises.
ID
M
i
+
M
i
-
T
i
P
i
1
0.45442
0.06127
0.11881
0.02982
2
0.50201
0.01368
0.02652
0.00666
3
0.43868
0.07701
0.14933
0.03748
4
0.12065
0.39504
0.76604
0.19225
5
0.01757
0.49812
0.96593
0.24242
6
0.28700
0.22869
0.44346
0.11130
7
0.04000
0.47569
0.92243
0.23150
8
0.33603
0.17966
0.34839
0.08743
9
0.51258
0.00311
0.00603
0.00151
10
0.51258
0.00311
0.00603
0.00151
11
0.42962
0.08607
0.16690
0.04189
12
0.48236
0.03333
0.06463
0.01622Step 2.
Design evaluation indicator system of agility of supply chain network and use AHP to calculate the weight of indicators. The indicator system is as shown in Table3.
Use AHP to calculate the indicator weight; the example of calculation is shown as in Table4.
The calculation result of all indicators is shown as in Table5.Table 3
Evaluation indicator system of agility in agile supply chain network.
The type of node
The 1st-class indicator
The 2nd-class indicator
Supplier (S)
Customer response capacity (A1)
The rate of timely transmission of information (A11)
The rate of accurate transmission of information (A12)
The rate of delivery on time (A13)
Delivery period (A14)
Logistics operation capacity [23] (A2)
Order processing speed (A21)
Dispatching speed (A22)
The speed of delivery (A23)
Supply capacity (A3)
The rate of order-fulfilling (A31)
The rate of delivery on time (A32)
Inventory level (A33)
Manufacturer (M)
Production flexibility (B1)
The ability of scalability (B11)
Process reengineering (B12)
Multiple employee skills (B13)
Cooperation capacity (B2)
Resource sharing (B21)
The level of resource integration (B22)
Information sharing (B23)
Market response capacity (B3)
The rate of accurate transmission of information (B31)
The rate of timely transmission of information (B32)
Delivery period (B33)
The rate of delivery on time (B34)
Distributor (D)
Market response capacity (C1)
The rate of timely transmission of information (C11)
The rate of accurate transmission of information (C12)
The rate of delivery on time (C13)
Delivery period (C14)
Logistics operation capacity (C2)
Order processing speed (C21)
Dispatching speed (C22)
The speed of delivery (C23)
The level of service quality (C3)
The rate of product satisfaction (C31)
The rate of customer complaint (C32)
The rate of solved customer complaint (C33)Table 4
The calculation example of indicator weight based on AHP.
A1
A11
A12
A13
A14
W
i
¯
W
i
A11
1
3
5
3
2.590
0.529
λ
max
⁡ = 4.065
A12
1/3
1
2
1/2
0.760
0.155
CI = 0.022
A13
1/5
1/2
1
1/2
0.470
0.097
RI = 0.90
A14
1/3
2
2
1
1.075
0.219
CR = 0.024 < 0.1Table 5
The calculation result of indicator weight.
The typeof node
The 1st-class indicator
Weight
The 2nd-class indicator
Weight
S
A1
0.391
A11
0.529
A12
0.155
A13
0.097
A14
0.219
A2
0.308
A21
0.296
A22
0.265
A23
0.440
A3
0.302
A31
0.347
A32
0.329
A33
0.324
M
B1
0.374
B11
0.347
B12
0.329
B13
0.324
B2
0.359
B21
0.233
B22
0.467
B23
0.300
B3
0.267
B31
0.229
B32
0.287
B33
0.268
B34
0.216
D
C1
0.360
C11
0.270
C12
0.330
C13
0.201
C14
0.199
C2
0.265
C21
0.296
C22
0.265
C23
0.440
C3
0.375
C31
0.328
C32
0.342
C33
0.330Step 3.
Calculate the membership degree of the indicator evaluation grade.
Use a series of methods such as Delphi method and Data Mining to get initial membership degree of the 2nd-class indicators of suppliers, manufacturers, and distributors, as shown in Tables6–8.
Combine the membership degree of the 2nd-class indicators with their weight; then get the membership degree of the 1st-class indicators, as shown in Table9.Table 6
The membership degree of evaluation grade of the 2nd-class indicators on suppliers.
Node
Grade
Indicator
A11
A12
A13
A14
A21
A22
A23
A31
A32
A33
1
A
0.0
0.0
0.2
0.1
0.0
0.0
0.2
0.1
0.3
0.2
B
0.6
0.6
0.4
0.5
0.4
0.5
0.4
0.6
0.6
0.5
C
0.4
0.4
0.4
0.4
0.6
0.5
0.4
0.3
0.1
0.3
D
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
2
A
0.1
0.1
0.2
0.0
0.0
0.0
0.2
0.1
0.2
0.2
B
0.7
0.7
0.4
0.5
0.4
0.6
0.5
0.6
0.6
0.6
C
0.2
0.2
0.4
0.5
0.6
0.4
0.3
0.3
0.2
0.2
D
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
3
A
0.0
0.1
0.2
0.1
0.2
0.2
0.2
0.2
0.1
0.2
B
0.6
0.6
0.4
0.5
0.4
0.5
0.4
0.6
0.6
0.5
C
0.4
0.3
0.4
0.4
0.4
0.3
0.4
0.2
0.3
0.3
D
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
4
A
0.1
0.1
0.2
0.0
0.1
0.0
0.2
0.1
0.2
0.2
B
0.6
0.6
0.6
0.7
0.7
0.6
0.6
0.6
0.6
0.6
C
0.3
0.3
0.2
0.3
0.2
0.4
0.2
0.3
0.2
0.2
D
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
5
A
0.1
0.1
0.0
0.0
0.0
0.0
0.1
0.1
0.2
0.2
B
0.6
0.6
0.7
0.7
0.6
0.6
0.6
0.6
0.6
0.6
C
0.3
0.3
0.3
0.3
0.4
0.4
0.3
0.3
0.2
0.2
D
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
Note: A: excellent, B: good, C: average, and D: poor.Table 7
The membership degree of evaluation grade of the 2nd-class indicators on manufacturers.
Node
Grade
Indicator
B11
B12
B13
B21
B22
B23
B31
B32
B33
B34
6
A
0.1
0.1
0.0
0.2
0.2
0.0
0.0
0.0
0.1
0.1
B
0.6
0.6
0.6
0.6
0.6
0.7
0.6
0.6
0.5
0.5
C
0.3
0.3
0.4
0.2
0.2
0.2
0.4
0.4
0.4
0.4
D
0.0
0.0
0.0
0.0
0.0
0.1
0.0
0.0
0.0
0.0
7
A
0.1
0.1
0.0
0.1
0.1
0.0
0.0
0.0
0.1
0.1
B
0.7
0.7
0.7
0.6
0.6
0.6
0.6
0.6
0.5
0.5
C
0.2
0.2
0.3
0.3
0.3
0.3
0.4
0.4
0.4
0.4
D
0.0
0.0
0.0
0.0
0.0
0.1
0.0
0.0
0.0
0.0
8
A
0.1
0.1
0.0
0.1
0.1
0.0
0.0
0.0
0.1
0.1
B
0.6
0.7
0.6
0.6
0.6
0.7
0.6
0.7
0.6
0.6
C
0.3
0.2
0.4
0.3
0.3
0.2
0.4
0.3
0.3
0.3
D
0.0
0.0
0.0
0.0
0.0
0.1
0.0
0.0
0.0
0.0
Note: A: excellent, B: good, C: average, and D: poor.Table 8
The membership degree of evaluation grade of the 2nd-class indicators on distributors.
Node
Grade
Indicator
C11
C12
C13
C14
C21
C22
C23
C31
C32
C33
9
A
0.2
0.2
0.2
0.1
0.1
0.2
0.2
0.7
0.4
0.6
B
0.6
0.6
0.5
0.6
0.7
0.6
0.7
0.3
0.4
0.3
C
0.2
0.2
0.3
0.3
0.2
0.2
0.1
0.0
0.2
0.1
D
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
10
A
0.2
0.3
0.2
0.1
0.2
0.3
0.2
0.5
0.5
0.6
B
0.7
0.6
0.5
0.6
0.7
0.6
0.7
0.4
0.4
0.3
C
0.1
0.1
0.3
0.3
0.1
0.1
0.1
0.1
0.1
0.1
D
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
11
A
0.1
0.1
0.2
0.1
0.1
0.1
0.2
0.6
0.5
0.6
B
0.6
0.7
0.5
0.6
0.6
0.7
0.7
0.3
0.4
0.4
C
0.3
0.2
0.3
0.3
0.3
0.2
0.1
0.1
0.1
0.0
D
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
12
A
0.2
0.3
0.2
0.2
0.3
0.2
0.2
0.6
0.5
0.6
B
0.7
0.6
0.7
0.6
0.7
0.8
0.8
0.3
0.4
0.3
C
0.1
0.1
0.1
0.2
0.0
0.0
0.0
0.1
0.1
0.1
D
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
Note: A: excellent, B: good, C: average, and D: poor.Table 9
The membership degree of the 1st-class indicators of node enterprises.
Node
Grade
Indicator
A1
A2
A3
B1
B2
B3
C1
C2
C3
1
A
0.04
0.09
0.20
—
—
—
—
—
—
B
0.56
0.42
0.57
—
—
—
—
—
—
C
0.40
0.49
0.23
—
—
—
—
—
—
D
0.00
0.00
0.00
—
—
—
—
—
—
2
A
0.09
0.09
0.17
—
—
—
—
—
—
B
0.63
0.50
0.60
—
—
—
—
—
—
C
0.28
0.41
0.23
—
—
—
—
—
—
D
0.00
0.00
0.00
—
—
—
—
—
—
3
A
0.06
0.20
0.17
—
—
—
—
—
—
B
0.56
0.43
0.57
—
—
—
—
—
—
C
0.38
0.37
0.26
—
—
—
—
—
—
D
0.00
0.00
0.00
—
—
—
—
—
—
4
A
0.09
0.12
0.17
—
—
—
—
—
—
B
0.62
0.63
0.60
—
—
—
—
—
—
C
0.29
0.25
0.23
—
—
—
—
—
—
D
0.00
0.00
0.00
—
—
—
—
—
—
5
A
0.07
0.04
0.17
—
—
—
—
—
—
B
0.63
0.60
0.60
—
—
—
—
—
—
C
0.30
0.36
0.23
—
—
—
—
—
—
D
0.00
0.00
0.00
—
—
—
—
—
—
6
A
—
—
—
0.07
0.14
0.05
—
—
—
B
—
—
—
0.60
0.63
0.55
—
—
—
C
—
—
—
0.33
0.20
0.40
—
—
—
D
—
—
—
0.00
0.03
0.00
—
—
—
7
A
—
—
—
0.07
0.07
0.05
—
—
—
B
—
—
—
0.70
0.60
0.55
—
—
—
C
—
—
—
0.23
0.30
0.40
—
—
—
D
—
—
—
0.00
0.03
0.00
—
—
—
8
A
—
—
—
0.07
0.07
0.05
—
—
—
B
—
—
—
0.63
0.63
0.63
—
—
—
C
—
—
—
0.30
0.27
0.32
—
—
—
D
—
—
—
0.00
0.03
0.00
—
—
—
9
A
—
—
—
—
—
—
0.18
0.17
0.57
B
—
—
—
—
—
—
0.58
0.67
0.33
C
—
—
—
—
—
—
0.24
0.16
0.10
D
—
—
—
—
—
—
0.00
0.00
0.00
10
A
—
—
—
—
—
—
0.21
0.23
0.53
B
—
—
—
—
—
—
0.61
0.67
0.37
C
—
—
—
—
—
—
0.18
0.10
0.10
D
—
—
—
—
—
—
0.00
0.00
0.00
11
A
—
—
—
—
—
—
0.12
0.14
0.56
B
—
—
—
—
—
—
0.61
0.67
0.37
C
—
—
—
—
—
—
0.27
0.19
0.07
D
—
—
—
—
—
—
0.00
0.00
0.00
12
A
—
—
—
—
—
—
0.23
0.23
0.57
B
—
—
—
—
—
—
0.65
0.77
0.33
C
—
—
—
—
—
—
0.12
0.00
0.10
D
—
—
—
—
—
—
0.00
0.00
0.00
Note: A: excellent, B: good, C: average, and D: poor.Step 4.
Calculate the agility membership degree of node enterprises combining the weight of the 1st-class indicators, as shown in Table10.Table 10
The agility membership degree of the node enterprises.
Grade
Node
1
2
3
4
5
6
7
8
9
10
11
12
A
0.10
0.11
0.14
0.12
0.09
0.09
0.07
0.07
0.32
0.33
0.30
0.36
B
0.52
0.58
0.52
0.62
0.61
0.60
0.62
0.63
0.51
0.54
0.53
0.56
C
0.38
0.31
0.34
0.26
0.30
0.30
0.30
0.29
0.17
0.13
0.17
0.08
D
0.00
0.00
0.00
0.00
0.00
0.01
0.01
0.01
0.00
0.00
0.00
0.00Step 5.
Calculate the result of comprehensive agility evaluation of agile supply chain network.Combine the agility evaluation result of the node enterprises with the weight of the node enterprises; then get the result of comprehensive agility evaluation of agile supply chain network, as shown in Table11.Table 11
The result of comprehensive agility evaluation of agile supply chain network.
Grade of agility
A
B
C
D
Evaluation
0.11
0.60
0.29
0.00


## 6. Conclusions

In the agility evaluation of the agile supply chain network, we consider not only the weight of agility evaluation indicators but also the weight of node enterprises which reflects the effect of the structure of supply chain network on the agility. This is a complement to current evaluation methods of agility.The paper firstly presents three concepts: node strength centrality, betweenness centrality, and network centrality, and it uses them to calculate the weight of node enterprises. Secondly, it uses AHP to calculate the weight of indicators which are used to evaluate agility of agile supply chain network. Thirdly, the paper uses Delphi method, Data Mining, and so forth to get initial agility evaluation matrix and then combines the matrix with the weight of indicators in order to get the agility membership degree of indicators. Lastly, it calculates the result of comprehensive agility evaluation of agile supply chain network on the basis of considering the weight of node enterprises.The paper starts the research from the point of the network structure relationship of the individual node. In the future, the research can be carried out on effect which could be made by the characteristics of the whole network structure and their change on agility. For example, some characteristic indicators and their change can make influence on the agility of supply chain network, such as the largest functional network, clustering coefficient, and characteristic path length. The interaction mechanism between these characteristics and the agility of the supply chain network is worthy to be studied in order to improve the agility level of the supply chain network through adjusting the scale or the structure of the supply chain network. This is the work to be carried out for further research in this field.



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*Source: 707459-2015-10-21.xml*