Research Article
A New Dataset Size Reduction Approach for PCA-Based Classification in OCR Application
Table 1
Recognition rate for different training dataset volumes.
| | Number of samples used for recognition operation by -NN | Recognition time for a sample (seconds) | Ratio of recognition time to initial recognition time (in percent) | Accuracy | | | |
| | 60,000 | = 0.1161352 | = 100% | 97.11% | 95.93% | 95.70% | | 30,000 | = 0.0509572 | = 43.87748% | 96.39% | 94.97% | 94.91% | | 20,000 | = 0.0367815 | = 31.67128% | 94.08% | 93.66% | 93.61% | | 15,000 | = 0.0296006 | = 25.48805% | 93.57% | 93.40% | 93.17% |
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