The article establishes a practical teaching quality evaluation index system from five aspects: practical teaching goal, practical teaching content, practical teaching process, practical teaching implementation guarantee, and practical teaching effect. Through large sample surveys and big data mining, combined with factor analysis to build a complete index system for practical teaching quality evaluation. On this basis, the rough set reduction method is adopted to reduce the complete index system and establish a scientific practical teaching quality evaluation system consisting of 5 first-level indicators, 21 second-level indicators, and 72 observation indicators.
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