Search Results for author: Bibhas Chakraborty

Found 16 papers, 9 papers with code

Benchmarking emergency department triage prediction models with machine learning and large public electronic health records

1 code implementation22 Nov 2021 Feng Xie, Jun Zhou, Jin Wee Lee, Mingrui Tan, Siqi Li, Logasan S/O Rajnthern, Marcel Lucas Chee, Bibhas Chakraborty, An-Kwok Ian Wong, Alon Dagan, Marcus Eng Hock Ong, Fei Gao, Nan Liu

In this paper, based on the Medical Information Mart for Intensive Care IV Emergency Department (MIMIC-IV-ED) database, we developed a publicly available benchmark suite for ED triage predictive models and created a benchmark dataset that contains over 400, 000 ED visits from 2011 to 2019.

Benchmarking

AutoScore-Survival: Developing interpretable machine learning-based time-to-event scores with right-censored survival data

1 code implementation13 Jun 2021 Feng Xie, Yilin Ning, Han Yuan, Benjamin Alan Goldstein, Marcus Eng Hock Ong, Nan Liu, Bibhas Chakraborty

We illustrated our method in a real-life study of 90-day mortality of patients in intensive care units and compared its performance with survival models (i. e., Cox) and the random survival forest.

BIG-bench Machine Learning Interpretable Machine Learning +1

AutoScore-Imbalance: An interpretable machine learning tool for development of clinical scores with rare events data

1 code implementation13 Jul 2021 Han Yuan, Feng Xie, Marcus Eng Hock Ong, Yilin Ning, Marcel Lucas Chee, Seyed Ehsan Saffari, Hairil Rizal Abdullah, Benjamin Alan Goldstein, Bibhas Chakraborty, Nan Liu

All scoring models were evaluated on the basis of their area under the curve (AUC) in the receiver operating characteristic analysis and balanced accuracy (i. e., mean value of sensitivity and specificity).

Decision Making Interpretable Machine Learning +1

FedScore: A privacy-preserving framework for federated scoring system development

1 code implementation1 Mar 2023 Siqi Li, Yilin Ning, Marcus Eng Hock Ong, Bibhas Chakraborty, Chuan Hong, Feng Xie, Han Yuan, Mingxuan Liu, Daniel M. Buckland, Yong Chen, Nan Liu

We also calculated the average AUC values and SDs for each local model, and the FedScore model showed promising accuracy and stability with a high average AUC value which was closest to the one of the pooled model and SD which was lower than that of most local models.

Federated Learning Model Selection +2

Skew Probabilistic Neural Networks for Learning from Imbalanced Data

1 code implementation10 Dec 2023 Shraddha M. Naik, Tanujit Chakraborty, Abdenour Hadid, Bibhas Chakraborty

This paper introduces an imbalanced data-oriented approach using probabilistic neural networks (PNNs) with a skew normal probability kernel to address this major challenge.

A Penalized Shared-parameter Algorithm for Estimating Optimal Dynamic Treatment Regimens

no code implementations13 Jul 2021 Palash Ghosh, Trikay Nalamada, Shruti Agarwal, Maria Jahja, Bibhas Chakraborty

A dynamic treatment regimen (DTR) is a set of decision rules to personalize treatments for an individual using their medical history.

Q-Learning

Reinforcement Learning in Modern Biostatistics: Constructing Optimal Adaptive Interventions

no code implementations4 Mar 2022 Nina Deliu, Joseph Jay Williams, Bibhas Chakraborty

In recent years, reinforcement learning (RL) has acquired a prominent position in the space of health-related sequential decision-making, becoming an increasingly popular tool for delivering adaptive interventions (AIs).

Causal Inference Decision Making +3

Thompson sampling for zero-inflated count outcomes with an application to the Drink Less mobile health study

no code implementations24 Nov 2023 Xueqing Liu, Nina Deliu, Tanujit Chakraborty, Lauren Bell, Bibhas Chakraborty

Mobile health (mHealth) technologies aim to improve distal outcomes, such as clinical conditions, by optimizing proximal outcomes through just-in-time adaptive interventions.

Decision Making Multi-Armed Bandits +1

Fairness-Aware Interpretable Modeling (FAIM) for Trustworthy Machine Learning in Healthcare

no code implementations8 Mar 2024 Mingxuan Liu, Yilin Ning, Yuhe Ke, Yuqing Shang, Bibhas Chakraborty, Marcus Eng Hock Ong, Roger Vaughan, Nan Liu

The escalating integration of machine learning in high-stakes fields such as healthcare raises substantial concerns about model fairness.

Fairness

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