Search Results for author: Yizhe Xu

Found 6 papers, 6 papers with code

The Shaky Foundations of Clinical Foundation Models: A Survey of Large Language Models and Foundation Models for EMRs

1 code implementation22 Mar 2023 Michael Wornow, Yizhe Xu, Rahul Thapa, Birju Patel, Ethan Steinberg, Scott Fleming, Michael A. Pfeffer, Jason Fries, Nigam H. Shah

The successes of foundation models such as ChatGPT and AlphaFold have spurred significant interest in building similar models for electronic medical records (EMRs) to improve patient care and hospital operations.

MOTOR: A Time-To-Event Foundation Model For Structured Medical Records

1 code implementation9 Jan 2023 Ethan Steinberg, Jason Fries, Yizhe Xu, Nigam Shah

MOTOR is the first foundation model for medical TTE predictions and we release a 143M parameter pretrained model for research use at [redacted URL].

Transfer Learning

Calibration Error for Heterogeneous Treatment Effects

1 code implementation24 Mar 2022 Yizhe Xu, Steve Yadlowsky

However, while many methods exist for evaluating the calibration of prediction and classification models, formal approaches to assess the calibration of HTE models are limited to the calibration slope.

Survival Analysis

Net benefit, calibration, threshold selection, and training objectives for algorithmic fairness in healthcare

1 code implementation3 Feb 2022 Stephen R. Pfohl, Yizhe Xu, Agata Foryciarz, Nikolaos Ignatiadis, Julian Genkins, Nigam H. Shah

A growing body of work uses the paradigm of algorithmic fairness to frame the development of techniques to anticipate and proactively mitigate the introduction or exacerbation of health inequities that may follow from the use of model-guided decision-making.

Decision Making Fairness

A comparison of approaches to improve worst-case predictive model performance over patient subpopulations

1 code implementation27 Aug 2021 Stephen R. Pfohl, Haoran Zhang, Yizhe Xu, Agata Foryciarz, Marzyeh Ghassemi, Nigam H. Shah

Predictive models for clinical outcomes that are accurate on average in a patient population may underperform drastically for some subpopulations, potentially introducing or reinforcing inequities in care access and quality.

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