activity
20242026
most citedDisentangling transients and their host galaxies with Scarlet2: A framework to forward model multi-epoch imaging

6 citations · 12 across the 6 of their papers we have counts for

collaborators

6 papers

cs.LG2026

Interleaved Noise Injection Improves Clean, Corrupted, and OOD Performance

Matt L. Wiemann, Peter Melchior, Andrew K. Saydjari

Noise injection is a well-known technique in stochastic optimization. We report its surprising effectiveness with an interleaved (on-off-on-off...) rather than the usual monotonic…

cs.LG2025

A novel approach to classification of ECG arrhythmia types with latent ODEs

Angelina Yan, Matt L. Sampson, Peter Melchior

12-lead ECGs with high sampling frequency are the clinical gold standard for arrhythmia detection, but their short-term, spot-check nature often misses intermittent events. Wearabl…

cs.LG2025

Optimization as a Dynamical System: Generative Schedules from Latent ODEs

Matt L. Sampson, Peter Melchior

We present a new meta-learning method to determine the optimal learning rate schedule for gradient descent. It leverages training runs from a hyperparameter search to learn a laten…

cs.LG2024

Path-minimizing Latent ODEs for improved extrapolation and inference

Matt L. Sampson, Peter Melchior

Latent ODE models provide flexible descriptions of dynamic systems, but they can struggle with extrapolation and predicting complicated non-linear dynamics. The latent ODE approach…

astro-ph.IM2024★ 6 cited

Disentangling transients and their host galaxies with Scarlet2: A framework to forward model multi-epoch imaging

Charlotte Ward, Peter Melchior, Matt L. Sampson +6

Many science cases for wide-field time-domain surveys rely on accurate identification and characterization of the galaxies hosting transient and variable objects. In the era of the…

astro-ph.IM2024★ 6 cited

Score-matching neural networks for improved multi-band source separation

Matt L. Sampson, Peter Melchior, Charlotte Ward +1

We present the implementation of a score-matching neural network that represents a data-driven prior for non-parametric galaxy morphologies. The gradients of this prior can be inco…