Uncertainty Sampling
Uncertainty sampling is an active learning technique that strategically selects data points for labeling, prioritizing those where a model's prediction is most uncertain. Current research focuses on improving uncertainty estimation methods, particularly for complex data structures like graphs and time series, and integrating uncertainty sampling with other active learning strategies like diversity sampling to enhance efficiency. This approach is crucial for optimizing data annotation in resource-constrained scenarios, such as federated learning and medical image analysis, leading to more efficient and effective machine learning model training. The development of robust uncertainty estimators and their application across diverse domains are key areas of ongoing investigation.