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arXiv research

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8 results for badges

We design a new algorithm for batch active learning with deep neural network models. Our algorithm, Batch Active learning by Diverse Gradient Embeddings (BADGE), samples groups of points that are disparate and high-magnitude when represented in a hallucinated gradient space, a strategy designed to incorporate both pred…

2019-06-09abs ↗pdf ↗

The Web has enabled one of the most visible recent developments in education---the deployment of massive open online courses. With their global reach and often staggering enrollments, MOOCs have the potential to become a major new mechanism for learning. Despite this early promise, however, MOOCs are still relatively u…

2014-03-12abs ↗pdf ↗

The paper proposes a survival model to optimize mobile notification delivery times.

problem Inappropriate notification timing and interruptions lead to user complaints.
method Developed a state transition framework and a survival model with log-linear and Weibull structures.
result The survival model outperforms logistic regression in prediction accuracy.

Extends batch active learning to non-differentiable models.

problem Efficiently training machine learning models on large, initially unlabelled datasets.
method Black-box batch active learning for regression tasks that relies solely on model predictions.
result Achieves strong performance on regression datasets compared to white-box approaches for deep learning models.

Ask-n-Learn uses gradient embeddings for active learning in image classification.

problem Efficiently labeling large amounts of training data for deep models.
method Gradient embeddings based on pseudo-labels, prediction calibration, and data augmentation.
result Significant improvements over state-of-the-art baselines on image classification tasks.