StruMPL: Multi-task Dense Regression for Forest AGB Estimation
There's this interesting new method called StruMPL that's designed to estimate forest aboveground biomass (AGB) using data from Earth observations. It faces a challenge because it relies on two different types of data that don’t quite match up. On one hand, spaceborne lidar gives us canopy structure info from millions of locations, but it doesn't provide biomass estimates. On the other hand, ground-based plots do offer biomass data, but they’re often biased and lack structural details. StruMPL creatively addresses this by treating it as a multi-task regression problem, managing the tricky missing data and applying known allometric laws. You can find more details about the research on arXiv.
Key facts
- StruMPL stands for multi-task dense regression under disjoint partial supervision and MNAR labels
- It estimates forest aboveground biomass from Earth observation data
- Two label sources: spaceborne lidar (structure, no biomass) and ground plots (biomass, biased locations)
- No single sample has labels for all target variables
- Plot labels are missing not at random (MNAR)
- Biomass linked to structural variables by biome-specific allometric laws
- Uses shared encoder with regression, imputation, and propensity heads
- Includes a learnable physics module for inter-task constraints
Entities
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