3 papers
math.NT2024
An exact way to verify whether n is a congruent number using Heegner points
Heng Chen, Rong Ma, Tuoping Du
We introduce the relationship between congruent numbers and elliptic curves, and compute the conductor of the elliptic curve associated with it. Furthermore, we…
stat.ME2023
Sensitivity analysis for incomplete data via unmeasured confounding
Heng Chen, Daniel F. Heitjan
We present a method to analyze sensitivity of frequentist inferences to potential nonignorability of the missingness mechanism. Rather than starting from the selection model, as is…
stat.ML2023
Augmented Learning of Heterogeneous Treatment Effects via Gradient Boosting Trees
Heng Chen, Michael L. LeBlanc, James Y. Dai
Heterogeneous treatment effects (HTE) based on patients' genetic or clinical factors are of significant interest to precision medicine. Simultaneously modeling HTE and correspondin…