Equipment Management Information System Evaluation Based on Entropy Weight Method and AHP Model

— The system idea was used to comprehensively evaluate the equipment management information system construction, and the implementation effect of the equipment management information system was objectively reflected, thus a scientific basis for system decision-making was provided. Firstly, the index system of the military equipment management information system was established. On the basis of this, the entropy weight method and the AHP model were combined to evaluate the equipment management information system, and finally, the comprehensive level of the equipment management information system is obtained. The results show that the evaluation of the equipment management information system based on the entropy weight method and the AHP model can effectively test the equipment management information system capability of a certain type of force and provide guidance and reference for further decision-making.


I. INTRODUCTION
Under the guidance of the concept of information management, the equipment management information system uses modern information technology to comprehensively transform equipment management activities, so that the organizational management system, management processes and management methods of equipment management can be transformed as a whole, and equipment management organizations, plans, and Coordination and control capabilities, and promote the process of equipment management activities to information transformation [1].From the perspective of the information system of foreign troops, especially the US military, the use of information technology in the process of equipment management can greatly improve the scientific level and quality of equipment management and become a "multiplier" for combat effectiveness.President Xi pointed out that our military should comprehensively advance the modernization of weapons and equipment, and strive to achieve national defense and military modernization by the year 2000.This requires us to use information methods and methods to improve the ability of the troops to use the equipment to enhance the combat effectiveness.The purpose of equipment management information system is to improve the level of equipment management under the conditions of informatization.In the process of transition from mechanization to informatized military, traditional management thinking and methods have been unable to adapt to the ever-changing needs of equipment management.To improve the quality and level of equipment management, we must use informational thinking and technology.
In recent years, the research and practice of equipment management information system which inside and outside the military has been increasing day by day, and many excellent results have been achieved.From the recent related research, our military's research on equipment management informatization mostly focuses on specific technology applications, and there are few evaluations of military equipment management information system at the system level.
Management guru Drucker has a famous saying: "There is no management without evaluation."Equipment management information system is also inseparable from evaluation.The evaluation of military equipment management information system through scientific and effective methods can solve the problems in the equipment management information system process to a certain extent.It has important practical significance for further improving the information system and scientific level of equipment management [2].This paper aims to evaluate the equipment information system from the system level through the improved model and obtain the evaluation results of the military equipment management information system, which provides reference and basis for further promoting and strengthening the informatization level of military equipment management.

II. MILITARY EQUIPMENT MANAGEMENT INFORMATION SYSTEM EVALUATION INDEX SYSTEM
From the current research, the research on the evaluation index system of military equipment management information construction is blank, but the research on the informatization evaluation index system is widely carried out by the state and the local.Here, the author refers to the "13th Five-Year Plan" issued by the State Council.In the National Informatization Plan, the indicators of informatization development, the elements of the national informatization system and the informatization index system of China's enterprises have established a first-level indicator, and then combined with the actual situation of the troops, designed the second-level indicators.The influencing factors of military equipment management informatization mainly include the following five aspects:

A. Strategic Position
Informatization is not only the direction and goal of our military development, but also the inevitable requirement of military equipment management.For the information management of equipment management, it is not only a technical means and a management method, but also a global and strategic issue of military equipment management [3].Only by putting it at a strategic height to examine, strengthen the top-level design, and enhance the strategic position of informatization, can we fully utilize the advantages of informatization and promote the efficiency of equipment management and combat effectiveness.The criteria for strategic status are measured by three secondary indicators.The investment in information management of equipment management is a quantitative indicator, which can be determined by the proportion of the total expenditure of the equipment management department in the equipment management work.The two levels of equipment management informatization construction planning level and informatization in equipment management are qualitative indicators, and experts determine the specific measures.

B. Information Resource
Information resources are an indispensable part of the construction of military equipment management and play a vital role in the management of information efficiency.Rational development and utilization of information resources can give full play to the utility of information in equipment management and improve the level of equipment management information and science.The information resources described in this paper are mainly information technology and its application in military equipment management, as well as the information content itself related to equipment management.On this basis, three secondary indicators are established: a unified equipment management database platform, the application of information technology in equipment management, and the total amount of equipment management information resources.The unified equipment management database platform and the application of information technology in equipment management are qualitative indicators, which mainly reflect the specific application ability level of information resources in the military equipment management process and are comprehensively evaluated by experts.The total amount of equipment management information is a quantitative indicator, which can reflect the amount of information obtained by equipment management.

C. Informational Talent
All management is inseparable from human participation.Talents are the basic and core of the success of informatization construction, and have a decisive influence on the development and results of other factors in the management of military equipment.This indicator specifically includes the following three aspects: equipment user informatization skills penetration rate, equipment management department information technology skills penetration rate, information technology professionals ratio.These three indicators can be used to obtain specific quantitative results through sample surveys.

D. Information Network Foundation
The information network foundation determines the hardware conditions of the equipment management information, and the reliable network foundation and network services can promote the efficiency of information management.The indicator has the following sub-indicators: military network coverage, computer ownership, and number of servers.These three indicators are quantitative indicators and can be obtained through survey statistics.

E. Information Policy, Regulations and Standards
Informatization policies, regulations and standards are the fundamental system guarantee for promoting equipment management informatization.The US military has quickly realized the informatization of equipment management through the strict implementation of the regulations, which has reference value for our army.The indicator includes three sub-indicators: the formulation and implementation of information management regulations, the formulation and implementation of information application specifications, and the formulation and implementation of information security standards.These three indicators are qualitative and are obtained through expert evaluation.
This paper divides the indicator system into the target layer, the criterion layer and the indicator layer.Through analysis, we get the indicator system as shown in Table პ:

III. EVALUATION BASED ON ENTROPY WEIGHT AHP MODEL
According to the analysis, a step hierarchy model is formed, and then the index weights of each level are obtained according to the AHP model and the entropy weight method.

A. AHP Method Determines the Weight of the First Level Indicator
Considering that the first-level index is difficult to quantify, there is no strong mutual coupling.Therefore, the AHP method is used to score the weight of the first-level index by experts, and then calculate the weight.
According to the scale criterion of the analytic hierarchy process, the pairwise comparison judgment matrix of the first-level indicator is given as follows: Calculate the eigenvalues and eigenvectors that satisfy max BZ O Z .
1) The maximum eigenvalue and eigenvector are calculated by the normalized summation method.a) Normalize each column of the judgment matrix, ie c) Vector positive planning The resulting vector is the obtained eigenvector (B ) i Z is the ith element of vector BZ .

B. Entropy Weight Method to Determine the Weight of Secondary Indicators
Due to the comparison, judgment and rough results of the AHP method, the deviation of the judgment results is not suitable for further accurate quantification of the secondary indicators.In addition, the secondary indicators have both qualitative and quantitative indicators.If the AHP method may cause loss and waste of quantitative indicators, the entropy method is used to determine the weight of the secondary indicators.
Entropy is the amount of uncertainty in information theory.The larger the amount of information, the smaller the uncertainty and the smaller the entropy.Conversely, the smaller the amount of information, the greater the uncertainty and the greater the entropy.The entropy weight method uses the index entropy to determine the weight [4].There are both qualitative and quantitative indicators in the secondary indicators.After processing, the entropy method is used to reflect the importance of the differences between the indicators, highlighting the local differences between the secondary indicators, and improving the accuracy of the weights.The method [5] is provided.

d) Calculate the weight of the jth indicator
C. Comprehensive Weighting to Determine the Comprehensive Score (1) Find the combined weight of the secondary indicator to the target: Normalize to: (2) Rate the secondary indicators to get ij t The rating criteria are as follows: (3) Comprehensive evaluation by weighted method IV. CASE ANALYSIS In order to verify the validity of the model, we conduct an empirical analysis of a synthetic brigade equipment management informationization construction in the Central Theater, and normalize the qualitative indicators and some indicators, and obtain the data as follows:

A. AHP Method Determines the Weight of the First Level Indicator
According to the scale criterion of the analytic hierarchy process, the pairwise comparison judgment matrix of the first-level indicator is given as

O
=0.08855 RI=1.12 CR=CI/RI=0.0768<0.10Through the consistency test, the feature vector can be used as the weight of the target layer.

B. Entropy Weight Method to Determine the Weight of Secondary Indicators
According to the entropy weight method, the weights of the secondary indicators are as follows:

C. Comprehensive Weighting to Determine the Comprehensive Score
The final combined weights of the secondary indicators are calculated, and the initial values are scored according to Table რ, and the following table is obtained: Then the final evaluation of the unit is W = 76.09points.Here we divide the unit's informatization construction level according to the score, as shown in the following table : Therefore, the level of equipment management informationization in this unit is good, and there is still room for improvement and improvement.

V. CONCLUSION
Based on the concept of equipment management information system, the evaluation method of military equipment management information system was put forward by using the combination of entropy weight method and AHP.The equipment management information system evaluation includes first-level indicators and second-level indicators.The first-level indicators were processed by the AHP model to obtain the first-level index weights, and the secondary indicators were divided into qualitative indicators and quantitative indicators.In the secondary indicators, some quantitative indicators were normalized compared with the optimal situation, some unreasonable indicators were corrected, and then the entropy weights of the secondary indicators were calculated, and finally the comprehensive score was calculated.The method can conveniently quantify the equipment management informationization capability in a scientific way, intuitively obtain the equipment management informationization level of a certain type of force, and provide support for the manager's decision-making.
Record the set of evaluation indicators as { ij X } i=1,2,3,4,5 j=1,2,3) Use ij x to indicate the original value of the jth second-level indicator under the i-th level indicator.experts are scored on qualitative indicators in the secondary indicators 0-100),Then follow /100 ij xto process the value of the 0-1 interval.For a23 a42 a43,normalize the optimal values of the same type of troops.For a11 a31 a32 a33 a41 The percent sign is removed for normalization and used as an evaluation indicator.At the same time, taking into account the equipment management informationization funding investment situation a11 indicators are not the bigger the better, here we assume that 0.6 input is the optimal value, the difference coefficient of the jth

TABLE პ .
INFORMATIZATION EVALUATION INDEX SYSTEM OF MILITARY EQUIPMENT MANAGEMENT.

TABLE ჟ .
AVERAGE RANDOM CONSISTENCY INDICATOR RI VALUES.

TABLE ს .
PRIMARY INDEX PRIMARY VALUE.

TABLE ტ .
SECONDARY INDICATOR ENTROPY WEIGHT

TABLE ფ .
EVALUATION OF INFORMATIZATION LEVEL OF FORCE EQUIPMENT MANAGEMENT.