scholarly journals Prediction of College Students’ Employment Rate Based on Gray System

2021 ◽  
Vol 2021 ◽  
pp. 1-7
Author(s):  
Hexia Yao ◽  
Mohd Dahlan Hj. A. Malek

College students’ employment is affected by many factors such as economy and policy, which makes the prediction error of college students’ employment rate large. In order to solve this problem, a prediction method of college students’ employment rate based on the gray system is designed. Firstly, it analyzes the current research status of college students’ employment rate prediction, finds out the causes of errors, then collects the historical data of college students’ employment rate, fits the change characteristics of college students’ employment rate through the gray system, and establishes the prediction model of college students’ employment rate. Finally, the simulation test is realized by using the employment rate data of college students. The results show that the gray system can reflect the change characteristics of college students’ employment rate and obtain high-precision college students’ employment rate prediction results. The prediction error is less than that of other college students’ employment rate prediction methods. We achieved an average accuracy of 95.22% as compared to 92.3% and 87.7% of other proposed systems. The prediction results can provide some reference information for the university employment management department.

2013 ◽  
Vol 779-780 ◽  
pp. 602-606 ◽  
Author(s):  
Chao Zhang ◽  
De Jiang Shang ◽  
Qi Li

A prediction method for the sound radiated power from submerged double cylindrical shells based on measuring vibration of inner shell is presented. The prediction model of submerged double cylindrical shells is established by using modal superposition method. Applied the ratio of the measuring value and theoretical value of the acceleration in one point or mean square velocity of inner shell, and combined with the theoretical value of the sound radiated power, the predicted value of the sound radiated power is derived. The corresponding experiment is carried out in lake. And then the measuring power curve is compared with the predicted power curve based on this method. The result shows that they have good agreement and the average prediction error is less than 2dB.


2004 ◽  
Vol 148 (2) ◽  
pp. 64-75 ◽  
Author(s):  
Kenji Shimizu ◽  
Hideki Motoyama

2020 ◽  
Author(s):  
Jin-Li Guo ◽  
Ya-Zhi Fu

Abstract This paper proposes a conversion rate prediction method and a parameter reevaluation method based on Logistic curve (S-curve) to predict the spread of NCP (the Novel coronavirus pneumonia). According to the statistical data, we use the conversion rate prediction method to predict the spread of NCP. The prediction accuracy is quite high. By fitting the cumulative number of NCP sufferers with the logistic curve, the average estimation method of the limit number is proposed to predict the spread of NCP and the limit number of sufferers. This paper also assessing the effectiveness of prevention and control measures with the dynamic estimation of the infection probability of NCP. Based on the Markov property, the parameter reevaluation method proposed in this paper avoids over-fitting the theoretical curve and improves the accuracy of prediction. This research idea is not only suitable for Logistic curve regression, but also for other regression prediction problems.


2013 ◽  
Vol 816-817 ◽  
pp. 180-184
Author(s):  
Dong Lei Wang ◽  
Li Juan Peng ◽  
Zhong Hua Lu

Definition of homology gene, mutual exclusion gene, formulations gene and compatriots gene set has been given based on the characteristics of the energetic formulation components in this paper. The complex formula chromosome resolution rules have been designed to solve the energetic formulation component burst speed estimate problem combined with the GEP theories and test techniques. The test results showed that the performance prediction error of the detonation velocity is less than 3%.


2021 ◽  
Vol 107 ◽  
pp. 103620
Author(s):  
Liu-jie Jing ◽  
Jian-bin Li ◽  
Na Zhang ◽  
Shuai Chen ◽  
Chen Yang ◽  
...  

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