Imperial College London
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DrCristinaBanks-Leite

Faculty of Natural Sciences, Department of Life Sciences (Silwood Park)

Reader in Conservation Ecology
 
 
 
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Contact

 

+44 (0)20 7594 2289c.banks

 
 
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Location

 

2.2MunroSilwood Park

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Summary

 

Publications

Citation

BibTex format

@article{Rizos:2024:10.1016/j.patter.2024.100932,
author = {Rizos, G and Lawson, J and Mitchell, S and Shah, P and Wen, X and Banks-Leite, C and Ewers, R and Schuller, BW},
doi = {10.1016/j.patter.2024.100932},
journal = {Patterns},
title = {Propagating variational model uncertainty for bioacoustic call label smoothing},
url = {http://dx.doi.org/10.1016/j.patter.2024.100932},
volume = {5},
year = {2024}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - Along with propagating the input toward making a prediction, Bayesian neural networks also propagate uncertainty. This has the potential to guide the training process by rejecting predictions of low confidence, and recent variational Bayesian methods can do so without Monte Carlo sampling of weights. Here, we apply sample-free methods for wildlife call detection on recordings made via passive acoustic monitoring equipment in the animals' natural habitats. We further propose uncertainty-aware label smoothing, where the smoothing probability is dependent on sample-free predictive uncertainty, in order to downweigh data samples that should contribute less to the loss value. We introduce a bioacoustic dataset recorded in Malaysian Borneo, containing overlapping calls from 30 species. On that dataset, our proposed method achieves an absolute percentage improvement of around 1.5 points on area under the receiver operating characteristic (AU-ROC), 13 points in F1, and 19.5 points in expected calibration error (ECE) compared to the point-estimate network baseline averaged across all target classes.
AU  - Rizos,G
AU  - Lawson,J
AU  - Mitchell,S
AU  - Shah,P
AU  - Wen,X
AU  - Banks-Leite,C
AU  - Ewers,R
AU  - Schuller,BW
DO  - 10.1016/j.patter.2024.100932
PY  - 2024///
SN  - 2666-3899
TI  - Propagating variational model uncertainty for bioacoustic call label smoothing
T2  - Patterns
UR  - http://dx.doi.org/10.1016/j.patter.2024.100932
UR  - https://www.ncbi.nlm.nih.gov/pubmed/38487806
UR  - https://www.cell.com/patterns/fulltext/S2666-3899(24)00023-0
UR  - http://hdl.handle.net/10044/1/110375
VL  - 5
ER  -
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