Table 4 Notation use for feature selection
Symbol | Description |
|---|---|
Nall | The total no. of documents in training dataset |
Ni | No. of documents in class ci |
Wi | No. of documents in class ci contain feature f |
Xi | No. of documents not in class ci but contain feature f |
Yi = Ni − Wi | No. of documents in class ci don’t contain feature f |
Zi = Nall − Ni − Xi | No. of documents neither in class ci nor contain the feature f |