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- W4365145411 abstract "Abstract For maritime navigation in the Arctic, sea ice charts are an essential tool, which still to this day is drawn manually by professional ice analysts. The total Sea Ice Concentration (SIC) is the primary descriptor of the charts and indicates the fraction of ice in an ocean surface area. Naturally, automating the SIC chart creation is desired. However, the optimal representation of the corresponding machine-learning task is ambivalent and discussed in the community. In this study, we explore the representation with either regressional or classification objectives, each with two different (weighted) loss functions: Mean Square Error and Binary Cross-Entropy, and Categorical Cross-Entropy and the Earth Mover’s Distance, respectively. While all models achieve good results they differ as the regression-based models obtain the highest numerical similarity to the reference charts, whereas the classification-optimised models generate results more visually pleasing and consistent. Rescaling the loss functions with inverse class weights improves the performance for intermediate classes at the expense of open water and fully-covered sea ice areas." @default.
- W4365145411 created "2023-04-13" @default.
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- W4365145411 date "2023-04-12" @default.
- W4365145411 modified "2023-09-26" @default.
- W4365145411 title "AI4SeaIce: selecting loss functions for automated SAR sea ice concentration charting" @default.
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- W4365145411 doi "https://doi.org/10.1038/s41598-023-32467-x" @default.
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