Search Results for author: William Fithian

Found 7 papers, 3 papers with code

AdaPT-GMM: Powerful and robust covariate-assisted multiple testing

1 code implementation30 Jun 2021 Patrick Chao, William Fithian

We propose a new empirical Bayes method for covariate-assisted multiple testing with false discovery rate (FDR) control, where we model the local false discovery rate for each hypothesis as a function of both its covariates and p-value.

Statistical Methods for Replicability Assessment

1 code implementation20 Mar 2019 Kenneth Hung, William Fithian

Large-scale replication studies like the Reproducibility Project: Psychology (RP:P) provide invaluable systematic data on scientific replicability, but most analyses and interpretations of the data fail to agree on the definition of "replicability" and disentangle the inexorable consequences of known selection bias from competing explanations.

Methodology Applications 62F03, 62P25

Data Augmentation via Levy Processes

1 code implementation21 Mar 2016 Stefan Wager, William Fithian, Percy Liang

The framework imagines data as being drawn from a slice of a Levy process.

Image Augmentation

Selective Sequential Model Selection

no code implementations8 Dec 2015 William Fithian, Jonathan Taylor, Robert Tibshirani, Ryan Tibshirani

Extending the selected-model tests of Fithian et al. (2014), we construct p-values for each step in the path which account for the adaptive selection of the model path using the data.

Model Selection regression

Altitude Training: Strong Bounds for Single-Layer Dropout

no code implementations NeurIPS 2014 Stefan Wager, William Fithian, Sida Wang, Percy Liang

Dropout training, originally designed for deep neural networks, has been successful on high-dimensional single-layer natural language tasks.

Local case-control sampling: Efficient subsampling in imbalanced data sets

no code implementations16 Jun 2013 William Fithian, Trevor Hastie

By contrast, our estimator is consistent for $\theta^*$ provided that the pilot estimate is.

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