no code implementations • 6 Feb 2024 • Chao Pang, Xinzhuo Jiang, Nishanth Parameshwar Pavinkurve, Krishna S. Kalluri, Elise L. Minto, Jason Patterson, Linying Zhang, George Hripcsak, Noémie Elhadad, Karthik Natarajan
Synthetic Electronic Health Records (EHR) have emerged as a pivotal tool in advancing healthcare applications and machine learning models, particularly for researchers without direct access to healthcare data.
no code implementations • 18 Sep 2022 • Arjun Ramachandra, Karthik Natarajan
This contrasts with the $e/(e-1)$ bound on the correlation gap ratio for monotone submodular set functions with mutually independent random inputs (which is known to be tight in case (b)), and illustrates a fundamental difference in the behavior of submodular functions with weaker notions of independence.
no code implementations • 12 Aug 2022 • Yanqiu Ruan, Xiaobo Li, Karthyek Murthy, Karthik Natarajan
The marginal distribution model (MDM) is one such model, that requires only the specification of marginal distributions of the random utilities.
no code implementations • 2 Mar 2022 • Bahar Taşkesen, Soroosh Shafieezadeh-Abadeh, Daniel Kuhn, Karthik Natarajan
We study the computational complexity of the optimal transport problem that evaluates the Wasserstein distance between the distributions of two K-dimensional discrete random vectors.
no code implementations • 10 Nov 2021 • Chao Pang, Xinzhuo Jiang, Krishna S Kalluri, Matthew Spotnitz, Ruijun Chen, Adler Perotte, Karthik Natarajan
CEHR-BERT also demonstrated strong transfer learning capability, as our model trained on only 5% of data outperformed comparison models trained on the entire data set.
1 code implementation • NeurIPS 2020 • Louis Chen, Divya Padmanabhan, Chee Chin Lim, Karthik Natarajan
We propose a distributionally robust model for the influence maximization problem.