Multiply Robust Causal Mediation Analysis with Continuous Treatments

no code implementations • 19 May 2021 • Numair Sani, Yizhen Xu, AmirEmad Ghassami, Ilya Shpitser

For binary treatments, efficient estimators for the direct and indirect effects are presented in Tchetgen Tchetgen and Shpitser (2012) based on the influence function of the parameter of interest.

Inference for BART with Multinomial Outcomes

1 code implementation • 18 Jan 2021 • Yizhen Xu, Joseph W. Hogan, Michael J. Daniels, Rami Kantor, Ann Mwangi

The multinomial probit Bayesian additive regression trees (MPBART) framework was proposed by Kindo et al. (KD), approximating the latent utilities in the multinomial probit (MNP) model with BART (Chipman et al. 2010).

Classification using Ensemble Learning under Weighted Misclassification Loss

1 code implementation • 16 Dec 2018 • Yizhen Xu, Tao Liu, Michael J. Daniels, Rami Kantor, Ann Mwangi, Joseph W. Hogan

Binary classification rules based on covariates typically depend on simple loss functions such as zero-one misclassification.

Binary Classification Classification +2