Abstract
Filling large data-gaps in Micro-Meteorological data has mostly been done using interpolation techniques based on a marginal distribution sampling. Those methods work well but need a large horizon of the previous events to achieve good results since they do not model the system but only rely on previously encountered iterations. In this paper, we propose to use multi-head deep attention networks to fill gaps in Micro-Meteorological Data. This methodology couples large-scale information extraction with modeling capabilities that cannot be achieved by interpolation-like techniques. Unlike Bidirectional RNNs, our architecture is not recurrent, it is simple to tune and our data efficiency is higher. We apply our architecture to real-life data and clearly show its applicability in agriculture, furthermore, we show that it could be used to solve related problems such as filling gaps in cyclic-multivariate-time-series.
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Notes
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Please note that this is only true in attention heads. We use a mask in the overall structure to copy the non-gap-points.
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Data available upon request.
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Acknowledgements
We would like to thank Lionel Clavien from our partner InnoBoost SA in Switzerland for providing us access to the server used for our experiments as well as some starting help on the platform. This work was supported by a grant from the Ministry of Science and Technology (MOST), Israel, under the France-Israel Maimonide Program, & Ministry of Europe and Foreign Affairs (MEAE), and the Ministry of Higher Education, Research and Innovation (MESRI) of France.
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Richard, A., Fine, L., Rozenstein, O., Tanny, J., Geist, M., Pradalier, C. (2021). Filling Gaps in Micro-meteorological Data. In: Dong, Y., Ifrim, G., Mladenić, D., Saunders, C., Van Hoecke, S. (eds) Machine Learning and Knowledge Discovery in Databases. Applied Data Science and Demo Track. ECML PKDD 2020. Lecture Notes in Computer Science(), vol 12461. Springer, Cham. https://doi.org/10.1007/978-3-030-67670-4_7
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