Author

Abhishek Bhattacharjee

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Preprint Sep 2026

Distribution-Free Changepoint Inference for Rainfall Patterns

Long records of rainfall contain critical information about the temporal organization of precipitation within a year, including wet and dry spells. Detecting when this temporal pattern changes is central to climate-impact assessment and environmental monitoring.A common data structure features observations from m locat...

Aaditya Jain, Abhishek Bhattacharjee · 0 citations

#machine learning Preprint Sep 2026

Adaptive Random Matrices in Gaussian Bandits: Spectral Universality and Selection-Induced Outliers

Adaptive arm selection changes the distribution of the observations collected by a bandit algorithm, but it need not change their limiting empirical spectrum. We study Gaussian bandit designs in which the dimension and the number of observations grow proportionally. A quantitative coupling theorem compares the design g...

Sudarshan Manikantan, Abhishek Bhattacharjee · 0 citations

Preprint Sep 2026

Cluster-Based Dimensionality Reduction by Nonparametric Distributional Screening

The objective is not to construct a low-rank projection, but to retain an interpretable subset of the original coordinates that preserves the distributional information distinguishing the clusters that preserves the distributional information distinguishing the clusters.

S. Jha, Rishikesh Muralimohan, Praveen Athauda Arachchi et al. · 0 citations