Author

Alokesh Manna

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Preprint Sep 2026

Bigraphical Mat\'ern-Whittle (BMW) Processes for Fast Inference of Big Multivariate Spatial Data on General Domains

Large spatial data sets now record many correlated variables at many thousands of locations, often on domains where Euclidean distance misrepresents proximity. The central difficulty is modelling the cross-variable dependence jointly while retaining variable-level interpretation. We introduce the bigraphical Mat'ern-Wh...

D. Dey, Alokesh Manna, Christopher J. Geoga · 1 citation

Preprint Sep 2026

Structured Bayesian Modeling of Dynamic Receptive1 Fields in Salamander Retinal Ganglion Cells

Neurons in the visual system are selective for specific spatial and temporal stimulus features, described by their \emph{receptive field}. Estimating one means a coefficient per pixel per time bin from few trials -- a high-dimensional problem requiring regularization. Sparse regularizers such as the LASSO handle the di...

Alokesh Manna · 0 citations