2,268 research outputs found
The Two-Point Angular Correlation Function and BATSE Sky Exposure
The Two-Point Angular Correlation Function is a standard analysis tool used
to study angular anisotropies. Since BATSE's sky exposure (the angular sampling
of gamma-ray bursts) is anisotropic, the TPACF should at some point identify
anisotropies in BATSE burst catalogs due to sky exposure. The effects of BATSE
sky exposure are thus explored here for BATSE 3B and 4B catalogs. Sky-exposure
effects are found to be small.Comment: 5 pages, 1 postscript figure. To appear in the Fourth Huntsville
Gamma-Ray Burst Symposiu
Confidence Estimation Using Unlabeled Data
Overconfidence is a common issue for deep neural networks, limiting their
deployment in real-world applications. To better estimate confidence, existing
methods mostly focus on fully-supervised scenarios and rely on training labels.
In this paper, we propose the first confidence estimation method for a
semi-supervised setting, when most training labels are unavailable. We
stipulate that even with limited training labels, we can still reasonably
approximate the confidence of model on unlabeled samples by inspecting the
prediction consistency through the training process. We use training
consistency as a surrogate function and propose a consistency ranking loss for
confidence estimation. On both image classification and segmentation tasks, our
method achieves state-of-the-art performances in confidence estimation.
Furthermore, we show the benefit of the proposed method through a downstream
active learning task. The code is available at
https://github.com/TopoXLab/consistency-ranking-lossComment: Accepted by ICLR'2
- …