Intercomparison of Machine Learning Algorithms for Remote Sensing-based In-season Crop Mapping
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Computer Science > Machine Learning
arXiv:2606.05731 (cs)
[Submitted on 4 Jun 2026]
Title:Intercomparison of Machine Learning Algorithms for Remote Sensing-based In-season Crop Mapping
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Abstract:In-season crop type mapping is critical for food security in the face of increasingly extreme climate-related threats to crops. Currently, the USDA Cropland Data Layer provides crop type labels at 30m resolution and is available the February after harvest, but no product exists that maps crop types before harvest with satisfactory accuracy that would allow emergency managers to respond to crop threats in near real time. Furthermore, the relative advantages of a wide range of algorithms have not been evaluated in a way that accounts for interannual variability, until this study. Here, Harmonized Landsat-Sentinel surface reflectance imagery time series and crop rotation history information are combined to map corn in Iowa and almonds in California at 30m resolution accurately by early June in unseen years, with robust quantification of uncertainty due to phenology and crop distribution. Thousands of model configurations across ten machine learning algorithms were compared using a year-wise cross-validation and a suite of metrics. Hyperparameter search revealed Support Vector Machines to be the most successful algorithm overall, with a mean F1 score of 0.74 (0.59) across five unseen validation years for almonds by early June in California (corn by early June in Iowa). Interannual variation was a large source of uncertainty, but patterns showed the potential to further improve performance with ensemble approaches or ancillary data. Future work may extend these methods to include multiclass maps of all crop types, CONUS-wide maps, and in-season crop yield forecasting.
| Comments: | 22 pages, 8 figures |
| Subjects: | Machine Learning (cs.LG) |
| Cite as: | arXiv:2606.05731 [cs.LG] |
| (or arXiv:2606.05731v1 [cs.LG] for this version) | |
| https://doi.org/10.48550/arXiv.2606.05731
arXiv-issued DOI via DataCite (pending registration)
|
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