A Study on the Model of Students' Behavior Assessment Based on Evidence Theory
Han Yuan-jie · Journal of Guilin University of Electronic Technology · 2004
For solving the problems of undistinguished difference, low reliability and simple method in students' behavior assessment, the technique of D-S information fusion is integrated into the new model for students' assessment based on evidential reasoning. D-S theory is a typical technique of uncertain reasoning and information fusion, and it's widely utilized for good applicability. The uncertain information of students' action is well described and processed with evidence theory. The method of function mapping is introduced to obtain Basic Probability Assignment and the uncertainty of evidence through evidential reasoning, and the decision rule based on Basic Probability Assignment is adopted to determine the result of assessment under the condition of previously given thresholds. The data of operation demonstrate that the uncertainty of objects declines greatly, and students are separated more distinctly. The degree of reliability increases and the result of assessment of students' behavior is improved.