No, you cannot train the Machine Learning Extractor without AI Center in UiPath. AI Center provides the infrastructure to train, deploy, and manage ML models. The Machine Learning Extractor relies on pre-trained models, but for custom training, you need AI Center to feed labeled data and retrain the model. Without AI Center, you can only adjust confidence thresholds but not improve extraction accuracy over time. If you need a trainable approach without AI Center, consider Intelligent Form Extractor with human validation instead. Let me know if you need help setting up AI Center! 