196 citations · 239 across the 4 of their papers we have counts for
4 papers
Spectral Decomposition Reveals Surface Processes on Europa
Gideon Yoffe, Sahar Shahaf
Competing processes shape Europa's surface: geological activity replenishes material through resurfacing, while bombardment by charged particles alters surface chemical composition…
A Linearized Approach to Radial-Velocity Extraction. II: Shot-Noise-Limited Precision via Spectral Factorization
Sahar Shahaf, Barak Zackay
We generalize the short-time Fourier transform (STFT) formalism for radial velocity extraction to cases where the underlying spectral components are unknown. The method factorizes…
Probabilistic Random Forest: A machine learning algorithm for noisy datasets
Itamar Reis, Dalya Baron, Sahar Shahaf
Machine learning (ML) algorithms become increasingly important in the analysis of astronomical data. However, since most ML algorithms are not designed to take data uncertainties i…
Detecting outliers and learning complex structures with large spectroscopic surveys - a case study with APOGEE stars
Itamar Reis, Dovi Poznanski, Dalya Baron +2
In this work we apply and expand on a recently introduced outlier detection algorithm that is based on an unsupervised random forest. We use the algorithm to calculate a similarity…