Research Article
Application of an Improved CHI Feature Selection Algorithm
Table 9
Comparison of classification results between CHI and Var-CV-CHI on the unbalanced English corpus (Naïve Bayes).
| Category | CHI | Var-CV-CHI | Precision | Recall | F1-score | Precision | Recall | F1-score |
| Acq | 0.76 | 0.84 | 0.80 | 0.80 | 0.84 | 0.82 | Crude | 0.78 | 0.82 | 0.80 | 0.84 | 0.94 | 0.89 | Earn | 0.93 | 0.85 | 0.89 | 0.93 | 0.88 | 0.90 | Interest | 0.95 | 0.91 | 0.93 | 0.93 | 0.93 | 0.93 | Ship | 0.85 | 1.00 | 0.92 | 0.92 | 1.00 | 0.96 | Student | 0.73 | 0.80 | 0.76 | 0.88 | 0.75 | 0.81 | Trade | 0.93 | 0.87 | 0.89 | 0.92 | 0.95 | 0.94 | Macro-avg-P | 0.85 | 0.89 | Macro-avg-R | 0.87 | 0.90 | Macro-avg-F1 | 0.86 | 0.89 |
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