Research Article
Application of an Improved CHI Feature Selection Algorithm
Table 8
Comparison of classification results between CHI and Var-CV-CHI on the unbalanced English corpus (KNN).
| Category | CHI | Var-CV-CHI | Precision | Recall | F1-score | Precision | Recall | F1-score |
| Acq | 0.73 | 0.86 | 0.79 | 0.73 | 0.85 | 0.79 | Crude | 0.83 | 0.59 | 0.69 | 0.89 | 0.94 | 0.91 | Earn | 0.87 | 0.89 | 0.88 | 0.90 | 0.87 | 0.88 | Interest | 0.90 | 0.82 | 0.86 | 0.93 | 0.86 | 0.89 | Ship | 0.92 | 0.55 | 0.69 | 0.94 | 0.75 | 0.83 | Student | 1.00 | 1.00 | 1.00 | 1.00 | 0.91 | 0.95 | Trade | 0.93 | 0.89 | 0.91 | 0.95 | 0.90 | 0.92 | Macro-avg-P | 0.88 | 0.90 | Macro-avg-R | 0.80 | 0.87 | Macro-avg-F1 | 0.83 | 0.88 |
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