Abstract
As bats are an important indicator for the health of their habitat, projects in multiple countries monitor bat populations by collecting audio recordings of bat calls. Analysing these recordings is however a tedious task and there is a need for systems that accurately and efficiently detect and classify bat calls. While earlier studies focused on detection and classification separately, in this paper we propose a first approach that combines these two tasks. Moreover, we aim to build a multi-label classifier that is able to detect if multiple bat species are present in the same audio recording. One of the challenges we face is that the available data focuses either on detection or single-label classification, but not on the combined task of detection and multi-label classification. We propose to address this by a data augmentation approach, and demonstrate that the resulting approach achieves the objectives of being accurate and efficient.
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Acknowledgements
This work was supported by Service Public de Wallonie Recherche under grant n\(^\circ \)2010235 - ARIAC by DIGITALWALLONIA4.AI.
We would like to express our gratitude to Natagora and the Plecotus team for the large amount of labelled bat call recordings they shared with us. We would also like to thank Bat detective for the data they have made available and their detection tool, used as starting point in this work. We thank Olivier Bonaventure for joining discussions on this project.
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Dierckx, L., Beauvois, M., Nijssen, S. (2022). Detection and Multi-label Classification of Bats. In: Bouadi, T., Fromont, E., Hüllermeier, E. (eds) Advances in Intelligent Data Analysis XX. IDA 2022. Lecture Notes in Computer Science, vol 13205. Springer, Cham. https://doi.org/10.1007/978-3-031-01333-1_5
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DOI: https://doi.org/10.1007/978-3-031-01333-1_5
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