2021

A Simple Baseline for Low-Budget Active Learning

Pourahmadi, Kossar, Nooralinejad, Parsa, Pirsiavash, Hamed

Understand

Active learning focuses on choosing a subset of unlabeled data to be labeled.

  • However, most such methods assume that a large subset of the data can be annotated.
  • We are interested in low-budget active learning where only a small subset (e.g., 0.2% of ImageNet) can be annotated.
  • Instead of proposing a new query strategy to iteratively sample batches of unlabeled data given an initial pool, we learn rich features by an off-the-shelf self-supervised learning method only once, and then study the effectiveness of different sampling strategies given a low labeling budget on a variety of datasets including ImageNet.

Reading the bibliography…