Search Results for author: Oscar López

Found 3 papers, 0 papers with code

Spectral gap-based deterministic tensor completion

no code implementations9 Jun 2023 Kameron Decker Harris, Oscar López, Angus Read, Yizhe Zhu

However, numerical experiments illustrate the dependence of the reconstruction error on the spectral gap for the practical max-quasinorm, ridge penalty, and Poisson loss minimization algorithms.

Recommendation Systems

Zero-Truncated Poisson Regression for Sparse Multiway Count Data Corrupted by False Zeros

no code implementations25 Jan 2022 Oscar López, Daniel M. Dunlavy, Richard B. Lehoucq

We propose a novel statistical inference methodology for multiway count data that is corrupted by false zeros that are indistinguishable from true zero counts.

regression

Beating level-set methods for 3D seismic data interpolation: a primal-dual alternating approach

no code implementations9 Jul 2016 Rajiv Kumar, Oscar López, Damek Davis, Aleksandr Y. Aravkin, Felix J. Herrmann

Acquisition cost is a crucial bottleneck for seismic workflows, and low-rank formulations for data interpolation allow practitioners to `fill in' data volumes from critically subsampled data acquired in the field.

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