Chris Geoga

Chris Geoga is Assistant Professor of Statistics at the University of Wisconsin-Madison's School of Computer, Data & Information Sciences. His research develops computational methods for spatial statistics, focusing on scalable Gaussian process models, spectral analysis techniques, and high-performance statistical computing. Geoga's work enables efficient analysis of large spatial datasets through innovations in covariance approximation, automatic differentiation, and numerical algorithms.

Research areas include:

• Scalable inference for nonstationary spatial processes
• Machine-precision spectral likelihood computation
• Automatic differentiation for covariance functions
• Hierarchical matrix methods for spatial statistics
• Irregular time series analysis

He develops open-source Julia libraries including Vecchia.jl for Gaussian likelihood approximations, GPMaxlik.jl for statistical inference, and BesselK.jl for specialized mathematical functions. Applications span environmental monitoring, fluid dynamics, and large-scale spatiotemporal modeling.