The Third Party Logistics Partner Selection of B2C E-Commerce Enterprise

In recent years, with the rapid development of Internet, e-commerce enterprises in China is at an alarming rate of sustainable development, the B2C e-commerce in the online shopping market accounted for a large proportion, with the rapid change of the market and customer needs to establish a flexible distribution service is one of the many e-commerce companies need to solve. Using self logistics capital occupancy bigger; the logistics alliance, with the risk of internal information disclosure; and on the third party logistics, not only capital and manpower can be effectively used, helps enterprises to strengthen the core business. Therefore, it is very important to choose the appropriate third party logistics providers to reduce operating costs and improve the market influence. This paper analyses the existing problems in the third party logistics, the establishment of a more complete index system, according to the actual situation of the suppliers, using the improved AHP method and the entropy coefficient method to get the comprehensive weight, finally get the approximation method to meet the business requirements of the logistics service providers use the ideal, for commercial enterprises to third party logistics service provider selection and puts forward some available models.


B2C e-commerce enterprise development status quo
With the continuous development of network shopping market ,the proportion of B2C e-commerce market in the online shopping market is more and more comprehensive, in order to explain this question, this article illustrate these two aspects the B2C e-commerce market scale and market share in detail.

e-commerce market scale
In 2015 the network shopping market share of 22.9% in the entire e-commerce market segment.B2C market share trading volume in the online shopping market is a sharp increase in the recent six years survey,in 2011 B2C accounted for the first time exceeded 20%, accounting for 29.7% in 2012,in 2013 accounted for 35.1%,and in 2015 B2C market transactions accounted for 45.8% of the entire online shopping market.In just a few years, the B2C market in the entire online shopping market develops rapidly and gradually holds the dominant position.

Market share
According to the survey, with the B2C market demand, B2C shopping sites are also increasing, which are familiar with the Jing dong, such as T mall, suning.complays an important role in the whole B2C market ,in 2015 the scale of the market share of B2C shopping website transactions in China see Figure 2. From the above illustrations, it can see that the B2C market with the rapid pace of development gradually becomes the main driving force of the online shopping market.

Analysis in factors of supplier selection
Based on the above third party logistics development situation, analysing the factors that affect the supplier selection, among them, the third party logistics service provider is the focus of our research, this paper will analyze the following factors.

2016
MATEC Web of Conferences 100 GCMM matecconf/201 32 Third party logistics service quality is the most important factor that should be considered when selecting suppliers, the quality of service will directly affect the reputation of enterprises.
(2) the cost of third party logistics service cost of logistics service is too high has been an important factor affecting domestic logistics development, enterprises in the selection of third party logistics, reduce the logistics cost of service must follow the principle of logistics service cost will directly determine the cost of enterprises so that this paper will treat the service cost as an important factor.
(3) service of the geographical Scope The third party logistics provider selection should be consistent with the scope of business enterprise principle, for large multinational companies, its scope of business throughout the world, its sales is bound to be about local culture or influence, in order to further develop the market to help the choice of local suppliers.
(4) third party logistics flexibility In the network economy environment, customers pay attention to the ability to adapt to rapid changes in the market and customer demand diversification so that logistics flexibility, time flexibility dynamic index is also equally important therefore, the flexible factors, the third party logistics is an indispensable factor.
(5) service provider information sharing ability B2C enterprises and logistics providers should also realize information sharing, information ability of logistics providers will directly affect the B2C enterprise and its information exchange.

The establishment of index system of the third party logistics supplier
This article through to the domestic and foreign related literature retrieval and consulting experts and scholars, finishing induction, and ultimately determine the logistics distribution supplier selection index system, as shown in Figure 3.

Model establishment of evaluation and selection of supplier 4.1 Improved analytic hierarchy process to determine subjective weights
The traditional AHP method to construct the judgment matrix A, calculate feature vector, to obtain the maximum eigenvalue, but often in the next consistency check is especially cumbersome, because in practice, consistency is not satisfied, with most estimates to adjust the judgment matrix, it is possible to adjust one or not to meet the requirements, with a lot of blindness [10].This article in order to avoid this kind of blindness, the use of the concept of the optimal transfer matrix, so that the judgment matrix nature to meet the consistency requirements.Steps are as follows.Construct judgment matrix to use of the double factors, determine the degree of importance, the rule layer S and sub rule layer Sij to construct the judgment matrix in this paper respectively.construct the anti symmetric matrix B From above, A is Reciprocal matrix, that is ,B is the structure of the anti symmetric matrix.
Calculation of the optimal transfer matrix C If C is the transfer matrix, B is the anti symmetric matrix and ¦¦ is the minimum, it can say that C is the optimal transfer matrix for B, To calculate the quasi optimal consistent matrix of A* , by the definition of A is the reciprocal matrix, if ,that A is consistent.From the above, A*as a quasi optimal consistent matrix To determine the feature vector by extract method A*will be matrix elements in line multiplication, n times of the product, do get normalized, as the feature vectors .

improved entropy coefficient method to determine the objective weight
For the objective weight model more reasonable should be.theobjective weight of the model obtained can not only reflect the information of the decision matrix and decision matrix; when the change, change degree of weight should be and the decision matrix changes.Therefore, in order to overcome the above problems, in this paper, based on the traditional entropy model, a flexible entropy coefficient model is established, and the specific steps are as follows.

the TOPSIS method to build the choice of third party logistics service providers evaluation
TOPSIS model is a classical multi-objective decision-making method.Using the ideal approach, it should first construct the ideal and negative ideal solution, by calculating the ideal solution and negative solution of the Euclidean distance between each scheme and ideal scheme, and obtained the various positive and negative ideal solution close to the degree of closeness to the ideal for the supplier; and understanding recently and negative ideal solution the most distant scheme is the solution satisfactory solution.The specific steps are as follows.
(1) Weighted normalized matrix v (2) determine the positive ideal solution v+ and negative ideal solution v -

)Calculate the Euclidean distance and the relative closeness degree and order
The evaluation value of logistics supplier is the distance from the positive ideal solution and the negative ideal solution.

Q
The evaluation value of logistics supplier is the distance from the positive ideal solution and the negative ideal There is a B2C e-commerce business clothing, food, daily necessities and other products, since its inception, in the principle of maximizing the interests of customers, quickly become one of the most influential B2C e-commerce business.The company originally only in the first tier cities such as Guangzhou, Shanghai and other implementation of door-to-door, but with the market and customer demand.The B2C e-commerce enterprises have opened the second tier cities of logistics and distribution services, however, the original logistics services have been unable to meet the needs of enterprises.After screening 5 logistics suppliers have become the candidate supplier, respectively A, B, C, D, E said, according to the above proposed evaluation index system and the logistics supplier performance in the previous situation, combined with the actual operating results of enterprises and related experts.The evaluation values of the 5 suppliers are as shown in Table 1.

Supplier selection and comprehensive evaluation
According to the above evaluation model, the process is as follows.

Determine the weight of indicators
According to the above requirements to improve the analytic hierarchy process for the subjective weight of the steps, the target layer S for the target layer O, the corresponding judgment matrix, anti symmetric matrix, the optimal transfer matrix and to be and consistent matrix are as follow.
Using the root method to deal with the quasi and consistent matrix can target on criterion layer relative weights for .
Subjective and Objective weight can be.From this, it can see that the supplier D close to the highest degree, is the best partner of B2C enterprise.

Concluding remarks
Aiming at the logistics service supplier business problems, establish the index system and determine the weight by using the improved AHP method and the entropy weight coefficient method, and then use the ideal approximation method to calculate the degree of closeness of each supplier, according to the order of suppliers close to the level, select the closest suppliers, is the best partner.Through the design and analysis of the case, it is proved that this method is feasible and effective for the third party logistics supplier selection provides a reference, but this article also has some shortcomings, such as the factor analysis, may not be able to cover all the factors may also change with the times, some new factors will be taken into account.I believe that research in this area will be more comprehensive, more and more mature.

( 2 ) 2016 MATEC
Entropy coefficient model DOI: 10.1051/ , 020 (2017) 710002032 Web of Conferences 100 GCMM matecconf/201 32For the normalized matrix D, the entropy of the first j attribute is defined as The closeness of each candidate supplier is calculated by the formula

Table 1 .
Candidate supplier index evaluation form.
The positive and negative ideal solutions and the European distance between the candidate suppliers and the positive