# The Use of Machine Learning Model in the Evaluation of College Students’ Employment and Entrepreneurship Level

Authors: Shixiao Li
Journal: Wireless Communications and Mobile Computing
 (2022)

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## Abstract

This exploration aims to investigate the employment and entrepreneurship of college students. College students majoring in information and computing sciences in Xinxiang City are taken as the research object. A machine learning model for college students’ employment and entrepreneurship is established. Experiments are conducted using Python language and a machine learning framework. First, based on the employment and entrepreneurship indexes of college students in machine learning, the initial data of college students’ training quality evaluation are obtained from the educational administration system, library management system, college evaluation materials, and questionnaire survey. Then, the combination weighting method is adopted to determine the index weight, quantify the data, and modify the parameters of the data provided by the framework. The Gaussian kernel is selected as the kernel function, and the sample data used by the machine learning model are labeled. Finally, the sample data are employed to train and test the model. After the consistency test, the model reaches the optimal value after 7 iterations, with an error rate of 0.01 and an accuracy rate of 99%. The final error rate of entrepreneurship and innovation model based on machine learning is less than 0.1, which is consistent with the actual situation. The model can meet the requirements of college students’ entrepreneurship and employment evaluation. It proves that it can be applied to the research of college students’ employment and entrepreneurship and has certain theoretical guidance and practical significance for the evaluation of college students’ employment and entrepreneurship level.


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## Body

## 1. Introduction

With the popularization of higher education and college enrollment expansion, the number of college graduates waiting for employment is increasing [1]. Under the rapid progress of the market economy, the adjustment of economic structure leads to the increase of the contradiction between supply and demand in the labor market, affects college students’ employment rate and quality, and causes various social problems [2]. Improving college students’ employment situation has become the focus of society, the government, colleges, and college students themselves. In the 13th five-year plan, China proposed to take employment as the priority goal of economic development, implement priority strategies, and create a positive employment policy environment to solve the current situation of college students’ employment, such as reducing employment pressure and improving the employment level [3]. With the increasing number of college graduates in the city, the employment situation of college students has become quite serious. The government continues to improve the employment service system, but the imbalance between supply and demand in the labor market still exists. Improving the employment quality of college students in the city has become an essential part of college students’ employment service [4].The economic situation is changing. All countries urgently need high-quality professionals with innovative spirit and entrepreneurial ability. The phenomenon of “graduation or unemployment” is not just caused by the deterioration of employment and the increase in the number of graduates. The point is that students cannot find jobs. The college education goal is not limited to imparting corresponding professional knowledge and skills to students. More importantly, by learning basic knowledge, students can form their own learning system and thinking mode. During modern economic globalization, intellectual property, professional innovation, and the attraction and application of talents are the most crucial core competitiveness. Innovative talents and high-quality professionals are the driving force to promote the sustainable development of the global economy, politics, and culture. As the cradle of talent training, higher education should establish a new model of innovation and entrepreneurship education and cultivate new talents to meet the development requirements of the times. It is of great significance to deeply analyze the influencing factors of college students’ employability and explore the talent training mode of the combination of innovation and entrepreneurship education and vocational education to meet the requirements of the new era. This exploration is an evaluation of college students’ employment and entrepreneurship. The research goal is to evaluate college students’ employment and entrepreneurship level through a machine learning model.College students majoring in information and computing sciences in Xinxiang City are taken as the research object. A machine learning model for college students’ employment and entrepreneurship is established. Experiments are conducted using Python language and a machine learning framework. According to the employment and entrepreneurship indexes of college students in machine learning, the initial data of college students’ training quality evaluation are obtained from the educational administration system, library management system, college evaluation materials, and questionnaire survey. The sample data are employed to train and test the model. The error rate of the test results is 0.01, and the accuracy is 0.99. Section1 introduces the background of higher education and college students’ innovation and entrepreneurship. Section 2 establishes the evaluation index system of college students’ employment and entrepreneurship based on machine learning through the analysis of different levels and dimensions and analyzes the establishment process of the system by using the calculation method of combination weighting. Section 3 analyzes the test data after machine learning simulation training and test results. Section 4 systematically analyzes the research results and draws the research conclusions. This exploration has crucial reference value for improving college students’ employment and entrepreneurship level.


## 2. Recent Related Work

Machine learning has brought people new inspiration for studying college students’ employment and entrepreneurship level. Knaus et al. systematically investigated the impact of job search plans on unemployed workers. To study the possible heterogeneous employment effect, they combined the nonexperimental causal empirical model with machine learning Lasso-type estimation to make an empirical analysis based on the rich administrative data in Swiss social security records. Considerable heterogeneity was found in the first six months after the training started. Finally, it showed the potential of easy-to-implement project participation rules to improve the average employment effect of these active labor market projects. The results show that the unemployed with fewer employment opportunities benefit more from participating in these projects [5]. Kumar et al. used a supervised machine learning method to study employment. On the one hand, the support vector machine (SVM) is superior to other methods in predicting employment, and the highest accuracy is 90%. On the other hand, the highest accuracy of random forest identification of the arranged students’ gender is 88%. Besides, it is suggested to use several important characteristics to determine gender and placement status. There is a significant correlation between students’ curriculum specialization and students’ employment status. Research shows that there is no significant correlation between students’ degrees and employment status [6]. Broda et al. demonstrated the potential of machine learning methods as inductive analysis tools to expand the evidence base of current policy-making and practice. The most accurate model is the random forest classifier, which predicts the employment results of adults with iodine deficient disorder, with an accuracy of 89% in the test sample and 80% in the persistence sample. These results suggest that potential machine learning tools can examine the results used to support the employment value of iodine deficient disorder patients in evidence-based decision-making [7]. Awujoola et al. proposed a modern, accurate, and valuable machine learning classification model. It could be deployed, implemented, and used to predict and evaluate the attributes of job seekers from the academic performance dataset of other industries to meet the industry’s selection criteria. The supervised and unsupervised machine learning classifiers were considered, including the Naive Bayes, logistic regression, and SVM. The results reveal that random forest and the decision tree perform well, and logistic regression is better than other methods, with an accuracy of 93% [8]. Gupta et al. used the quantitative model of business dynamics and the machine learning algorithm in counterfactual analysis to study the effect of long-term trends or external shocks on total employment growth. Thereby, the comprehensive enterprise-level data of Belgium’s small open economy were used to increase the dynamic decomposition of total employment, allowing the life cycle dynamics, survival rate, and conditional growth rate of enterprises to change with the business cycle. In particular, a method based on machine learning was applied to predict the counterfactual evolution of life cycle dynamics. With this dynamic framework, coupled with machine learning, the evolution of total employment under various e-commerce conditions from 2020 to 2030 was predicted [9]. Griffiths et al. used machine learning to study the employment environment of people with autism and developed an online survey tool to assess employers’ views on hiring job seekers with autism spectrum disorders. Cluster analysis shows that company structure, policies and practices, ideas, and employers’ and employees’ needs are crucial to determining who will successfully hire job seekers [10]. To sum up, there are some research gaps in previous studies, and insufficient attention is paid to the evaluation results of college students’ innovation and entrepreneurship evaluation index system. This exploration adopts the combination weighting method to determine the index weight, quantify the data, and modify the parameters of the data provided by the framework. The Gaussian kernel is selected as the kernel function to label the sample data used in the machine learning model. The application results of the model have practical reference value for improving the level of innovation and entrepreneurship.


## 3. Establishment of a Machine Learning Model for College Students’ Employment and Entrepreneurship

### 3.1. Establishment of an Index System of a Machine Learning Model for College Students’ Employment and Entrepreneurship

A machine learning model for college students’ employment and entrepreneurship is inseparable from the index system for training quality evaluation. By analyzing the quality evaluation system of college students’ training, this exploration divides the quality evaluation system into three aspects: knowledge, ability, and quality. Each item is analyzed to obtain the secondary index, and the secondary index is quantified through the observation points. By comparing and analyzing the advantages and disadvantages of the subjective and objective weighting method, a more reasonable combination weighting method for the weighting of college students’ quality evaluation indexes is proposed and adopted [11]. Figure 1 presents the specific hierarchy diagram.Figure 1
Index system diagram of a machine learning model for college students’ employment and entrepreneurship.In Figure1, the training quality of college students is analyzed through three dimensions: quality, ability, and knowledge [12]. (1) The evaluation of knowledge for the training quality of college students is inseparable from the evaluation of their knowledge reserve. The knowledge learned in college includes multiple aspects, among which professional knowledge is the most fundamental. Only qualified professional knowledge reserves can meet the graduation requirements. Of course, knowledge includes professional knowledge, humanistic and social science knowledge, mathematical and chemical knowledge, and foreign language knowledge. Knowledge will accompany a student’s life, and it can be used in all life. (2) In the current society, ability plays an increasingly important role in one’s development. A person’s ability reflects whether this person is competent for the current work, can complete the corresponding learning tasks, and finish what the person should do faster and better. At present, the demand for talents in society is more and more dissatisfied with talents with rich professional knowledge. The demand for college students’ ability is increasingly higher, and the ability is more and more important in their development. Thereby, students’ abilities should be evaluated to evaluate college students’ training quality. (3) In addition to evaluating knowledge and ability, the evaluation of students’ training quality should also include college students’ quality. Quality includes ideological, cultural, physical and mental, and professional quality. It is not enough for the personal development of college students and their contribution to society to just have professional knowledge and high ability. College students also need to have a positive and optimistic attitude and have a healthy body and mind [13]. Talents should have talent, morality, and high quality. Hence, the evaluation of college students’ training quality needs to be conducted in terms of quality. Quality should be used as an important index to evaluate the training quality of college students.


### 3.2. Process Design of Machine Learning Model for College Students’ Employment and Entrepreneurship

The evaluation index system of college students’ training quality has been established. Indexes are analyzed, and their importance is compared in pairs through the scale comparison table of the analytic hierarchy process (AHP). According to the scale in the table, the scale corresponding to the index importance is determined. The judgment matrix is constructed through the determined importance value [14]. Figure 2 is the process design of the machine learning model for college students’ employment and entrepreneurship:Figure 2
Flow chart of the machine learning model for college students’ employment and entrepreneurship.In general, college students’ employment and entrepreneurship machine model is divided into six steps. First, the index system is established, and the indexes are analyzed. The relationship between each layer of indexes and the lower layer is analyzed. Then, it is essential to analyze the importance of indexes, indexes relative to the target layer, and indexes relative to the upper layer. According to the scale comparison table of the AHP given by the AHP, the indexes are compared in pairs, and then the important degree is obtained. The judgment matrix is established, the consistency test is conducted, and hierarchical single-ranking and total ranking are carried out. Finally, the evaluation is carried out, and the evaluation results are analyzed.


### 3.3. Index Weighting Method of Machine Model for College Students’ Employment and Entrepreneurship

Different weighting methods determine the characteristics of weights and the differences of evaluation results [15]. The subjective weighting method is relatively mature, and the evaluation results are easier to explain and more in line with people’s subjective will. The linear combination method is adopted, and the distance function is introduced to determine the linear combination coefficient [16]. The improved combination weight is obtained by multiplying the subjective weight and objective mass by different coefficients [17]. Figure 3 is the flow chart of the combination weight calculation method.Figure 3
Flow chart of combination weight calculation method.In Figure3, the judgment matrix needs to pass the consistency test to be determined as reasonable. Then, the judgment matrix that fails the consistency test needs to be modified. For example, the importance of index A to index B is 2, and the importance of index B to index C is 3. Then, what should be the appropriate importance of index A to index C? If it is determined to be 4, there is an inconsistency. For the judgment matrix that does not meet the consistency, it is necessary to reanalyze the index, determine the relative importance, and reconduct the consistency test until the consistency is met [18].The calculation of evaluation objective judgment matrix A reads:(1)A=b11⋯b1n⋮⋱⋮bn1⋯bnn.In (1), A is the evaluation objective. B=B1,B2,⋯,Bn is the evaluation index. bij is the relative importance of evaluation objective A. The value of Bij is an integer between 1 and 9 (i,j=1,2,3,⋯,n), Bij=1/Bji. Equation (2) is to normalize matrix A:
(2)bij∧=bij∑j=1nbij,j=1,2,3⋯,n.In (2), bij∧ is the matrix element that normalizes matrix A. bij is the relative importance of evaluation objective A [19]. The normalized matrix is summed by the row vector:
(3)W=wi=∑jnbij,i=1,2,3⋯,n.In (3), W is the column vector obtained by summing the normalized matrix according to the row vector. bij is the relative importance of evaluation objective A [20]. The column vector W is normalized:
(4)Wij∧=Wi∑i=1nWi,i=1,2,3⋯,n.In (4), Wij∧ is the index weight vector. W is the column vector obtained by summing the normalized matrix according to the row vector. Next, the consistency of the normalized matrix needs to be tested. The maximum eigenvalue shall be calculated as follows:
(5)λmax=∑inAWij∧nWij∧.In (5), A is the initial matrix. λmax is the maximum eigenvalue of matrix A. Wij∧ is the weight vector of the index. The calculation equation of the sample consistency index is as follows:
(6)CI=λmax−nn−1In (6), λmax is the maximum eigenvalue of matrix A, and CI is the fixed consistency index. The consistency ratio (CR) is calculated as follows:
(7)CR=CIRI.In (7), CI is the sample consistency index, RI is the random consistency index, and n is the index quantity. The value of the random consistency index can be obtained by looking up the table [21]. Table 1 shows the specific values:Table 1
Consistency indexes.
Random consistency indexn123456789RI00.560.891.241.982.312.953.414.13CI00.230.720.991.531.922.362.973.97In Table1, if CR<5, it meets the weight value corresponding to the index determined by the consistency requirements [22]. According to the established index system, the secondary index is taken as the index of college students’ training quality evaluation [23], and the following matrix is constructed:
(8)R=rijnm=r11⋯r1m⋮⋱⋮rn1⋯rnm.In (8), m is the number of indexes, and n is the number of students. The proportion of index j of sample i in this index is calculated [24] according to the matrix, and the equation is as follows:
(9)pij=rij∑Rij,i=1,2,⋯,n,j=1,2,⋯,mIn (9), rij is the j-th index of sample i. pij is the proportion of index j of sample i in this index [25]. Finally, the weight of j-th index is calculated:
(10)wj=1−ej∑j−1m1−ej.In (10), wj is the weight of the j-th index, and ej is the entropy of the j-th index. The method of weighting the evaluation index system of college students’ entrepreneurship and employment is determined, and the entropy weight method is selected for combination weighting [26].


## 3.1. Establishment of an Index System of a Machine Learning Model for College Students’ Employment and Entrepreneurship

A machine learning model for college students’ employment and entrepreneurship is inseparable from the index system for training quality evaluation. By analyzing the quality evaluation system of college students’ training, this exploration divides the quality evaluation system into three aspects: knowledge, ability, and quality. Each item is analyzed to obtain the secondary index, and the secondary index is quantified through the observation points. By comparing and analyzing the advantages and disadvantages of the subjective and objective weighting method, a more reasonable combination weighting method for the weighting of college students’ quality evaluation indexes is proposed and adopted [11]. Figure 1 presents the specific hierarchy diagram.Figure 1
Index system diagram of a machine learning model for college students’ employment and entrepreneurship.In Figure1, the training quality of college students is analyzed through three dimensions: quality, ability, and knowledge [12]. (1) The evaluation of knowledge for the training quality of college students is inseparable from the evaluation of their knowledge reserve. The knowledge learned in college includes multiple aspects, among which professional knowledge is the most fundamental. Only qualified professional knowledge reserves can meet the graduation requirements. Of course, knowledge includes professional knowledge, humanistic and social science knowledge, mathematical and chemical knowledge, and foreign language knowledge. Knowledge will accompany a student’s life, and it can be used in all life. (2) In the current society, ability plays an increasingly important role in one’s development. A person’s ability reflects whether this person is competent for the current work, can complete the corresponding learning tasks, and finish what the person should do faster and better. At present, the demand for talents in society is more and more dissatisfied with talents with rich professional knowledge. The demand for college students’ ability is increasingly higher, and the ability is more and more important in their development. Thereby, students’ abilities should be evaluated to evaluate college students’ training quality. (3) In addition to evaluating knowledge and ability, the evaluation of students’ training quality should also include college students’ quality. Quality includes ideological, cultural, physical and mental, and professional quality. It is not enough for the personal development of college students and their contribution to society to just have professional knowledge and high ability. College students also need to have a positive and optimistic attitude and have a healthy body and mind [13]. Talents should have talent, morality, and high quality. Hence, the evaluation of college students’ training quality needs to be conducted in terms of quality. Quality should be used as an important index to evaluate the training quality of college students.


## 3.2. Process Design of Machine Learning Model for College Students’ Employment and Entrepreneurship

The evaluation index system of college students’ training quality has been established. Indexes are analyzed, and their importance is compared in pairs through the scale comparison table of the analytic hierarchy process (AHP). According to the scale in the table, the scale corresponding to the index importance is determined. The judgment matrix is constructed through the determined importance value [14]. Figure 2 is the process design of the machine learning model for college students’ employment and entrepreneurship:Figure 2
Flow chart of the machine learning model for college students’ employment and entrepreneurship.In general, college students’ employment and entrepreneurship machine model is divided into six steps. First, the index system is established, and the indexes are analyzed. The relationship between each layer of indexes and the lower layer is analyzed. Then, it is essential to analyze the importance of indexes, indexes relative to the target layer, and indexes relative to the upper layer. According to the scale comparison table of the AHP given by the AHP, the indexes are compared in pairs, and then the important degree is obtained. The judgment matrix is established, the consistency test is conducted, and hierarchical single-ranking and total ranking are carried out. Finally, the evaluation is carried out, and the evaluation results are analyzed.


## 3.3. Index Weighting Method of Machine Model for College Students’ Employment and Entrepreneurship

Different weighting methods determine the characteristics of weights and the differences of evaluation results [15]. The subjective weighting method is relatively mature, and the evaluation results are easier to explain and more in line with people’s subjective will. The linear combination method is adopted, and the distance function is introduced to determine the linear combination coefficient [16]. The improved combination weight is obtained by multiplying the subjective weight and objective mass by different coefficients [17]. Figure 3 is the flow chart of the combination weight calculation method.Figure 3
Flow chart of combination weight calculation method.In Figure3, the judgment matrix needs to pass the consistency test to be determined as reasonable. Then, the judgment matrix that fails the consistency test needs to be modified. For example, the importance of index A to index B is 2, and the importance of index B to index C is 3. Then, what should be the appropriate importance of index A to index C? If it is determined to be 4, there is an inconsistency. For the judgment matrix that does not meet the consistency, it is necessary to reanalyze the index, determine the relative importance, and reconduct the consistency test until the consistency is met [18].The calculation of evaluation objective judgment matrix A reads:(1)A=b11⋯b1n⋮⋱⋮bn1⋯bnn.In (1), A is the evaluation objective. B=B1,B2,⋯,Bn is the evaluation index. bij is the relative importance of evaluation objective A. The value of Bij is an integer between 1 and 9 (i,j=1,2,3,⋯,n), Bij=1/Bji. Equation (2) is to normalize matrix A:
(2)bij∧=bij∑j=1nbij,j=1,2,3⋯,n.In (2), bij∧ is the matrix element that normalizes matrix A. bij is the relative importance of evaluation objective A [19]. The normalized matrix is summed by the row vector:
(3)W=wi=∑jnbij,i=1,2,3⋯,n.In (3), W is the column vector obtained by summing the normalized matrix according to the row vector. bij is the relative importance of evaluation objective A [20]. The column vector W is normalized:
(4)Wij∧=Wi∑i=1nWi,i=1,2,3⋯,n.In (4), Wij∧ is the index weight vector. W is the column vector obtained by summing the normalized matrix according to the row vector. Next, the consistency of the normalized matrix needs to be tested. The maximum eigenvalue shall be calculated as follows:
(5)λmax=∑inAWij∧nWij∧.In (5), A is the initial matrix. λmax is the maximum eigenvalue of matrix A. Wij∧ is the weight vector of the index. The calculation equation of the sample consistency index is as follows:
(6)CI=λmax−nn−1In (6), λmax is the maximum eigenvalue of matrix A, and CI is the fixed consistency index. The consistency ratio (CR) is calculated as follows:
(7)CR=CIRI.In (7), CI is the sample consistency index, RI is the random consistency index, and n is the index quantity. The value of the random consistency index can be obtained by looking up the table [21]. Table 1 shows the specific values:Table 1
Consistency indexes.
Random consistency indexn123456789RI00.560.891.241.982.312.953.414.13CI00.230.720.991.531.922.362.973.97In Table1, if CR<5, it meets the weight value corresponding to the index determined by the consistency requirements [22]. According to the established index system, the secondary index is taken as the index of college students’ training quality evaluation [23], and the following matrix is constructed:
(8)R=rijnm=r11⋯r1m⋮⋱⋮rn1⋯rnm.In (8), m is the number of indexes, and n is the number of students. The proportion of index j of sample i in this index is calculated [24] according to the matrix, and the equation is as follows:
(9)pij=rij∑Rij,i=1,2,⋯,n,j=1,2,⋯,mIn (9), rij is the j-th index of sample i. pij is the proportion of index j of sample i in this index [25]. Finally, the weight of j-th index is calculated:
(10)wj=1−ej∑j−1m1−ej.In (10), wj is the weight of the j-th index, and ej is the entropy of the j-th index. The method of weighting the evaluation index system of college students’ entrepreneurship and employment is determined, and the entropy weight method is selected for combination weighting [26].


## 4. Result

### 4.1. Data Collection and Preprocessing of College Students’ Employment and Entrepreneurship in Machine Learning

The evaluation experiment data are the data of all students of 2019 and 2020 majoring in information and computing sciences. The data generated by these students during their study in school are collected from the following aspects. Theoriginal data of the corresponding indexes are obtained. Figure 4 is the data acquisition diagram.Figure 4
Original data chart of indexes.In Figure4, the observation points in the evaluation index system of college students’ employment and entrepreneurship are analyzed. There are five sources of data. The academic achievement and practical achievement can be obtained through the educational administration system. Using the library management system can obtain the category and quantity of reading books. Students’ ideological quality can be obtained through the questionnaire survey of teachers’ evaluation of students and students’ mutual evaluation results. The competition and awards can be obtained from the college’s annual awards and the evaluation and investigation of scientific research achievements. The invalid data in the data are manually eliminated. Figure 5 is the data diagram after preprocessing:Figure 5
Processed sample data diagram.In Figure5, the preprocessed data need further processing to obtain the sample data used in the machine learning model. The sample data have three steps. First, the collected data are processed to obtain the score of each indexand then determine the weight of the index. Finally, the students’ score is calculated according to the index score and weight. The students’ samples are marked according to theirscores. Finally, 270 pieces of data are collected, and the proportion of males and females is more appropriate.


### 4.2. Index and Weight Calculation of College Students’ Employment and Entrepreneurship in Machine Learning

The collected data shall be preprocessed, and the corresponding scores of each index shall be scored in the percentage system. If the student scores more than 100 under a certain index, the highest score of 100 shall be scored. Figure6 displays the specific score calculation results:Figure 6
Employment and entrepreneurship indexes of college students.In Figure6, the score of the index is represented by Gij (ij is the subscript of the secondary index, i∈1,2,3, and j∈1,2,3,4,5,6). The observation points include five aspects. G1 is the result of practice and experimental course, G2 is the score of award, G3 is the score of the thesis, G4 is the score of reading books, and G5 is the score of teachers’ evaluation and mutual evaluation of students. The score range of reading books is 0≤G4≤100.Thescore of the hundred mark system obtained by the educational administration system is used as the score of the index. Among them,0≤G5≤100 is obtained from the teacher’s evaluation of students and mutual evaluation of students, and the weight of the index needs to be determined. Therefore, next, the index weight is determined. Figure 7 is the weight calculation diagram:Figure 7
Calculation of employment weight.Figure7 reveals that for knowledge in the primary indexes, the comprehensive weight of humanities and social sciences is 0.02009; that of mathematics, chemistry, and computer science is 0.037261; that of foreign language knowledge is 0.037261; that of professional knowledge is 0.069388; and that of application of knowledge is 0.062416. Forthe ability, the comprehensive weights of communication ability, innovation ability, and entrepreneurship ability are 0.04851, 0.215708, and 0.03967, respectively. At the quality level, the comprehensive weights of ideological quality, cultural quality, and physical and mental quality are 0.103075, 0.25251, and 0.1369, respectively.


### 4.3. Machine Learning Simulation Training and Testing

Python language and machine learning framework are used to write code. 270 labeled sample data are used for model training, and the model parameters are adjusted. Figure8 reveals a training chart:Figure 8
Simulation training chart of machine learning.In Figure8, after the training of machine learning employment and entrepreneurship model, when the number of learning times is 7, the error rate of model output reaches the lowest. The final error rate output of the machine learning model is 0.01, that is, the accuracy is 0.99. The running results show that when the number of component learning machines is 7, the model’s error rate in the test set and training set reaches the best value. When seven learning machines are constructed, the model’s error rate reaches the optimal result under the given parameters. When the curve is balanced, the model’s error rate on the test set is 0.01. The curve does not change with the increase of the number of base classifiers. In the data samples of students majoring in information and computing science, the sample data other than training data are used as test data to test the employment and entrepreneurship model of machine learning. Four sets of data with 25 samples in each group are used. Figure 9 shows the test results:Figure 9
Testing diagram of machine learning employment and entrepreneurship model.Figure9 shows that the sample data has four categories, with 25 students in each category. After the data are input into the sample model, for class A students, the number of correct classifications is 21, and the number of wrong classifications is 4. Two samples are incorrectly classified as class B and two are incorrectly classified as class C. 24 class B students are correctly classified, and 1 sample is incorrectly classified as class C. For class C students, 23 samples are correctly classified, and the other two samples are incorrectly classified as class B and class D, respectively. For class D students, the number of samples correctly classified is 23. Two samples are wrongly classified into class C, and the sample data obtained are used to train and test the model. The final error rate of machine learning entrepreneurial innovation model is less than 0.1. Meanwhile, machine learning adopts “black box” modeling, which is simple and efficient. Moreover, the initial index weight model can be adjusted through model training. Some student data can be selected for the test. The test results are accurate and in line with the actual situation and can be used to evaluate the employment and entrepreneurship of college students.To sum up, college students’ employment service has ushered in great challenges with the rapid progress of higher education. In order to alleviate the employment pressure of college students, it is necessary to improve the employability of college students and the employment level of college graduates. The reason for the difficulty of college students’ employment lies in the poor information about China’s labor market, the lack of understanding of the real situation of the employment market, and their inaccurate positioning of themselves when looking for jobs. It is difficult to find a job that meets their own development requirements. The municipal government in Xinxiang City should cooperate with the employment guidance department of colleges in the following three aspects. First, the cooperation between private employment agencies and employment guidance courses in colleges can let students understand the current situation of the employment market.Moreover, it can consciously guide college students to find employment according to their own situation in the employment process andaccurately position themselves instead of blindly following the crowd. Second, it is necessary to help college students carry out targeted prevocational training. Then, they can be fully prepared for their upcoming career and enhance employment confidence. Third, private employment agencies should establish information-sharing cooperation with college employment guidance centers. These agencies provide the obtained employment information to the employment guidance center of colleges. The employment guidance center of colleges publishes employment information through the employment guidance website of colleges to reduce students’ concerns about false information when looking for employment information from private employment agencies. In short, they should take the government as the leading role and cooperate with multiple subjects such as colleges and employment agencies to improve the quality of college students’ employment service.


## 4.1. Data Collection and Preprocessing of College Students’ Employment and Entrepreneurship in Machine Learning

The evaluation experiment data are the data of all students of 2019 and 2020 majoring in information and computing sciences. The data generated by these students during their study in school are collected from the following aspects. Theoriginal data of the corresponding indexes are obtained. Figure 4 is the data acquisition diagram.Figure 4
Original data chart of indexes.In Figure4, the observation points in the evaluation index system of college students’ employment and entrepreneurship are analyzed. There are five sources of data. The academic achievement and practical achievement can be obtained through the educational administration system. Using the library management system can obtain the category and quantity of reading books. Students’ ideological quality can be obtained through the questionnaire survey of teachers’ evaluation of students and students’ mutual evaluation results. The competition and awards can be obtained from the college’s annual awards and the evaluation and investigation of scientific research achievements. The invalid data in the data are manually eliminated. Figure 5 is the data diagram after preprocessing:Figure 5
Processed sample data diagram.In Figure5, the preprocessed data need further processing to obtain the sample data used in the machine learning model. The sample data have three steps. First, the collected data are processed to obtain the score of each indexand then determine the weight of the index. Finally, the students’ score is calculated according to the index score and weight. The students’ samples are marked according to theirscores. Finally, 270 pieces of data are collected, and the proportion of males and females is more appropriate.


## 4.2. Index and Weight Calculation of College Students’ Employment and Entrepreneurship in Machine Learning

The collected data shall be preprocessed, and the corresponding scores of each index shall be scored in the percentage system. If the student scores more than 100 under a certain index, the highest score of 100 shall be scored. Figure6 displays the specific score calculation results:Figure 6
Employment and entrepreneurship indexes of college students.In Figure6, the score of the index is represented by Gij (ij is the subscript of the secondary index, i∈1,2,3, and j∈1,2,3,4,5,6). The observation points include five aspects. G1 is the result of practice and experimental course, G2 is the score of award, G3 is the score of the thesis, G4 is the score of reading books, and G5 is the score of teachers’ evaluation and mutual evaluation of students. The score range of reading books is 0≤G4≤100.Thescore of the hundred mark system obtained by the educational administration system is used as the score of the index. Among them,0≤G5≤100 is obtained from the teacher’s evaluation of students and mutual evaluation of students, and the weight of the index needs to be determined. Therefore, next, the index weight is determined. Figure 7 is the weight calculation diagram:Figure 7
Calculation of employment weight.Figure7 reveals that for knowledge in the primary indexes, the comprehensive weight of humanities and social sciences is 0.02009; that of mathematics, chemistry, and computer science is 0.037261; that of foreign language knowledge is 0.037261; that of professional knowledge is 0.069388; and that of application of knowledge is 0.062416. Forthe ability, the comprehensive weights of communication ability, innovation ability, and entrepreneurship ability are 0.04851, 0.215708, and 0.03967, respectively. At the quality level, the comprehensive weights of ideological quality, cultural quality, and physical and mental quality are 0.103075, 0.25251, and 0.1369, respectively.


## 4.3. Machine Learning Simulation Training and Testing

Python language and machine learning framework are used to write code. 270 labeled sample data are used for model training, and the model parameters are adjusted. Figure8 reveals a training chart:Figure 8
Simulation training chart of machine learning.In Figure8, after the training of machine learning employment and entrepreneurship model, when the number of learning times is 7, the error rate of model output reaches the lowest. The final error rate output of the machine learning model is 0.01, that is, the accuracy is 0.99. The running results show that when the number of component learning machines is 7, the model’s error rate in the test set and training set reaches the best value. When seven learning machines are constructed, the model’s error rate reaches the optimal result under the given parameters. When the curve is balanced, the model’s error rate on the test set is 0.01. The curve does not change with the increase of the number of base classifiers. In the data samples of students majoring in information and computing science, the sample data other than training data are used as test data to test the employment and entrepreneurship model of machine learning. Four sets of data with 25 samples in each group are used. Figure 9 shows the test results:Figure 9
Testing diagram of machine learning employment and entrepreneurship model.Figure9 shows that the sample data has four categories, with 25 students in each category. After the data are input into the sample model, for class A students, the number of correct classifications is 21, and the number of wrong classifications is 4. Two samples are incorrectly classified as class B and two are incorrectly classified as class C. 24 class B students are correctly classified, and 1 sample is incorrectly classified as class C. For class C students, 23 samples are correctly classified, and the other two samples are incorrectly classified as class B and class D, respectively. For class D students, the number of samples correctly classified is 23. Two samples are wrongly classified into class C, and the sample data obtained are used to train and test the model. The final error rate of machine learning entrepreneurial innovation model is less than 0.1. Meanwhile, machine learning adopts “black box” modeling, which is simple and efficient. Moreover, the initial index weight model can be adjusted through model training. Some student data can be selected for the test. The test results are accurate and in line with the actual situation and can be used to evaluate the employment and entrepreneurship of college students.To sum up, college students’ employment service has ushered in great challenges with the rapid progress of higher education. In order to alleviate the employment pressure of college students, it is necessary to improve the employability of college students and the employment level of college graduates. The reason for the difficulty of college students’ employment lies in the poor information about China’s labor market, the lack of understanding of the real situation of the employment market, and their inaccurate positioning of themselves when looking for jobs. It is difficult to find a job that meets their own development requirements. The municipal government in Xinxiang City should cooperate with the employment guidance department of colleges in the following three aspects. First, the cooperation between private employment agencies and employment guidance courses in colleges can let students understand the current situation of the employment market.Moreover, it can consciously guide college students to find employment according to their own situation in the employment process andaccurately position themselves instead of blindly following the crowd. Second, it is necessary to help college students carry out targeted prevocational training. Then, they can be fully prepared for their upcoming career and enhance employment confidence. Third, private employment agencies should establish information-sharing cooperation with college employment guidance centers. These agencies provide the obtained employment information to the employment guidance center of colleges. The employment guidance center of colleges publishes employment information through the employment guidance website of colleges to reduce students’ concerns about false information when looking for employment information from private employment agencies. In short, they should take the government as the leading role and cooperate with multiple subjects such as colleges and employment agencies to improve the quality of college students’ employment service.


## 5. Conclusion

The research motivation is to evaluate college students’ employment and entrepreneurship, establish college students’ employment and entrepreneurship machine learning model, and improve the success rate of college students’ employment and entrepreneurship. The experiment is conducted through Python language and a machine learning framework. The parameters of the data provided by the framework are modified, and Gaussian kernel is selected as the kernel function. According to the employment and entrepreneurship indexes of college students in the field of machine learning, the initial data of college students’ training quality evaluation are obtained from the educational administration system, library management system, college evaluation materials, and questionnaire survey. The combination weighting method is adopted to determine the index weight, quantify the data, and label the sample data used in the machine learning model. Sample data are used to train and test the model. The error rate of the test results is 0.01, and the accuracy rate is 0.99, which is in good agreement with the actual situation, and can meet the requirements of college students’ employment and entrepreneurship evaluation. However, college students’ training quality evaluation index is not invariable. With the progress of society and the development of education, evaluation indexes should also be continuously enriched and developed. The development of evaluation indexes is inseparable from the characteristics and internal requirements of evaluation objects. Although the selected parameters have achieved good performance, there is still room for improvement in parameter selection. The evaluation indexes need to be adjusted appropriately according to the specific situation in future research work. There are many ways to measure diversity. Building a machine learning model through other diversity measurement methods may achieve better results.



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*Source: 8652349-2022-07-07.xml*