Table 3.

The comparison of prediction accuracy of different grades.

Algorithm	Intelligent identification	Accurate identification	General identification	Unidentification	None identification
Genetic algorithm	47.23	59.22	37.28	38.34	35.94
Neural network algorithm	82.32	80.13	81.33	82.47	81.91
Genetic algorithm and neural network	86.41	86.27	87.17	85.49	87.70