A machine scoring system and method based on data analysis
A data analysis and data technology, applied in the field of data analysis, can solve data leakage and other problems, and achieve the effect of high intelligence, high efficiency, and security
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Embodiment 1
[0036] Such as figure 1 , image 3 and Figure 4 As shown, a machine scoring system based on data analysis includes: a data entry device for entering student achievement data; the data entry device has several, which are assigned to different teachers, and the teachers use the exclusive data entry device respectively , inputting the achievement information of the students; the data analysis device is used for performing data analysis on the input achievement information, obtaining the comprehensive achievement of the students, and encrypting the input achievement information; it is characterized in that the data analysis device, Carry out data analysis on the grade information of the students to obtain the comprehensive grade of the students, and the method of encrypting the entered grade information performs the following steps: Step 1: Set the first encryption key function, use S i means that each input variable is convolved with the corresponding weight function to obtain...
Embodiment 2
[0040] On the basis of the previous embodiment, the data analysis device performs data analysis on the entered achievement information, and the method of obtaining the comprehensive achievement of the student performs the following steps: cleaning and integrating the collected raw data; The final data is discretized using entropy to obtain a sample set of nominal data; a logistic regression model for training is constructed, and a data set is randomly selected from the converted sample set as a training set, and based on this The training set solves the parameters of the constructed logistic regression model to obtain the final analysis model; another data set in the sample set is used as the test set, and the obtained final analysis model is used for testing to obtain the analysis results; An evaluation metric evaluates the accuracy of the analysis results.
[0041] Using the above technical solution, discretization is a commonly used technique in program design, which can ef...
Embodiment 3
[0043] On the basis of the previous embodiment, the method for cleaning and integrating the collected performance information by the data analysis device performs the following steps: set four quadrants of data filtering sets in the coordinate axes to express respectively using the following formulas:
[0044] Among them, x is the grade information,
[0045] is a set of real numbers, p is the first parameter, and the value range is: (1~10); q is the first parameter, and the value range is: (11~100); Eliminate, complete data cleaning and integration.
[0046] Specifically, when simulating a continuous system on a digital computer, the first problem encountered is how to solve the basic problem of the numerical and temporal discreteness of the digital computer and the numerical and temporal continuity of the simulated system. Fundamentally speaking, the numerical calculations performed by digital computers are only "digital" calculations, which represent that the precision ...
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