| Class | No. of documents taken for Training | No. of documents taken for Testing | Total no. of documents |
| Alt.atheism | 440 | 310 | 750 |
| Comp.graphics | 520 | 360 | 880 |
| Misc.forsale | 250 | 200 | 450 |
| Sci.Crypt | 370 | 180 | 550 |
| Rec.motorcycles | 410 | 260 | 670 |
| Total | 3300 | ||