Research Article
Application of an Improved CHI Feature Selection Algorithm
Table 4
Comparison of classification results between CHI and Var-CV-CHI on the balanced Chinese corpus (KNN).
| Category | CHI | Var-CV-CHI | Precision | Recall | F1-score | Precision | Recall | F1-score |
| Culture | 0.92 | 0.95 | 0.93 | 0.94 | 0.94 | 0.94 | Education | 0.94 | 0.93 | 0.94 | 0.93 | 0.92 | 0.92 | Entertainment | 0.94 | 0.88 | 0.91 | 0.93 | 0.87 | 0.90 | Event | 0.82 | 0.82 | 0.82 | 0.75 | 0.85 | 0.80 | Finance | 0.82 | 0.88 | 0.85 | 0.87 | 0.89 | 0.88 | Game | 0.98 | 0.97 | 0.98 | 0.98 | 0.97 | 0.97 | Health | 0.92 | 0.78 | 0.84 | 0.95 | 0.82 | 0.88 | Occultism | 0.77 | 0.98 | 0.86 | 0.83 | 1.00 | 0.90 | Sport | 0.98 | 0.92 | 0.95 | 0.98 | 0.91 | 0.95 | Technology | 0.92 | 0.84 | 0.88 | 0.93 | 0.86 | 0.89 | Macro-avg-P | | 0.90 | | | 0.91 | Macro-avg-R | | 0.90 | | | 0.90 | Macro-avg-F1 | | 0.90 | | | 0.90 |
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