Data fusion of sparse, heterogeneous, and mobile sensor devices using adaptive distance attention

Jean-Marie Lepioufle; Philipp Schneider; Paul David Hamer; Rune Odegard; Islen Vallejo; Tuan-Vu Cao; Amir Taherkordi; Marek Wójcikowski

doi:10.1017/eds.2024.18

Data fusion of sparse, heterogeneous, and mobile sensor devices using adaptive distance attention

Abstract

In environmental science, where information from sensor devices are sparse, data fusion for mapping purposes is often based on geostatistical approaches. We propose a methodology called adaptive distance attention that enables us to fuse sparse, heterogeneous, and mobile sensor devices and predict values at locations with no previous measurement. The approach allows for automatically weighting the measurements according to a priori quality information about the sensor device without using complex and resource-demanding data assimilation techniques. Both ordinary kriging and the general regression neural network (GRNN) are integrated into this attention with their learnable parameters based on deep learning architectures. We evaluate this method using three static phenomena with different complexities: a case related to a simplistic phenomenon, topography over an area of 196 km2 and to the annual hourly NO2 concentration in 2019 over the Oslo metropolitan region (1026 km2 ). We simulate networks of 100 synthetic sensor devices with six characteristics related to measurement quality and measurement spatial resolution. Generally, outcomes are promising: we significantly improve the metrics from baseline geostatistical models. Besides, distance attention using the Nadaraya–Watson kernel provides as good metrics as the attention based on the kriging system enabling the possibility to alleviate the processing cost for fusion of sparse data. The encouraging results motivate us in keeping adapting distance attention to space-time phenomena evolving in complex and isolated areas.

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Authors (8)

Jean-Marie Lepioufle
Philipp Schneider
Paul David Hamer
Rune Odegard
Islen Vallejo
Tuan-Vu Cao
Amir Taherkordi
Marek Wójcikowski dr hab. inż.

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Articles

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artykuły w czasopismach

Published in:

Environmental Data Science no. 3, pages 1 - 27,
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Language:

English

Publication year:

2024

Bibliographic description:

Lepioufle J., Schneider P., Hamer P. D., Odegard R., Vallejo I., Cao T., Taherkordi A., Wójcikowski M.: Data fusion of sparse, heterogeneous, and mobile sensor devices using adaptive distance attention// Environmental Data Science -Vol. 3,iss. e9 (2024), s.1-27

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