Research Article
Application of an Improved CHI Feature Selection Algorithm
Table 7
Comparison of classification results between CHI and Var-CV-CHI on the unbalanced Chinese corpus (Naïve Bayes).
| Category | CHI | Var-CV-CHI | Precision | Recall | F1-score | Precision | Recall | F1-score |
| Culture | 0.96 | 0.84 | 0.89 | 0.96 | 0.84 | 0.90 | Education | 0.75 | 0.88 | 0.81 | 0.92 | 0.98 | 0.95 | Entertainment | 0.94 | 0.89 | 0.91 | 0.93 | 0.94 | 0.94 | Event | 0.68 | 0.62 | 0.65 | 0.73 | 0.80 | 0.77 | Finance | 0.85 | 0.69 | 0.76 | 0.86 | 0.83 | 0.85 | Game | 0.97 | 0.95 | 0.96 | 0.98 | 0.95 | 0.96 | Health | 0.38 | 1.00 | 0.55 | 0.87 | 1.00 | 0.93 | Occultism | 0.92 | 1.00 | 0.96 | 0.95 | 1.00 | 0.98 | Sport | 0.95 | 0.88 | 0.92 | 0.96 | 0.94 | 0.95 | Technology | 0.93 | 0.83 | 0.88 | 0.94 | 0.90 | 0.92 | Macro-avg-P | 0.83 | 0.91 | Macro-avg-R | 0.86 | 0.92 | Macro-avg-F1 | 0.83 | 0.92 |
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