Training accurate classifiers requires many labels, but each label provides only limited information (one bit for binary classification). In this work, we propose BabbleLabble, a framework for training classifiers in which an annotator provides a natural language explanation for each labeling decision. A semantic parser converts these explanations into programmatic labeling functions that generate noisy labels for an arbitrary amount of unlabeled data, which is used to train a classifier. On three relation extraction tasks, we find that users are able to train classifiers with comparable F1 scores from 5-100× faster by providing explanations instead of just labels. Furthermore, given the inherent imperfection of labeling functions, we find that a simple rule-based semantic parser suffices.
Humangenerated natural language explanations for classification data have been used in the past to train a semantic parser that in turn generates more noisy labeled data which can used to train a classifier REF .
Training Classifiers with Natural Language Explanations
Proceedings of the conference. Association for Computational Linguistics. Meeting
Proceedings of the conference. Association for Computational Linguistics. Meeting
Computer Science Medicine