The Multi-layer Grey Relational Analysis between the Training Factors and the Employment Factors of the Engineering Subjects College Students

The aim of this paper is to construct an analyzing scheme for presenting the complex relationship between typical training factors and significant employment factors. This research was based on data acquired from senior college students majoring in different fields of engineering. Limited by the amount of questionnaires, grey relational analysis (GRA) was applied in this study for its ability to process limited data.Taking into consideration all the complexities of the training factors, an arrangement of three hierarchies were created with the training factors grouped together in a few categories for each hierarchy. Using this arrangement, the corresponding multi-layer synthetic GRA was constructed. According to the grey relational coefficient between the training and employment factors, the training factors were converged, from the lower hierarchy to the adjacent higher hierarchy, with different weights. The grey relational coefficient sequences of all training factors, within the different hierarchies, were then obtained. After the significant difference tests, the key training factors of each hierarchy were uncovered.