2 code implementations • 15 Apr 2022 • Chirag Nagpal, Willa Potosnak, Artur Dubrawski
Applications of machine learning in healthcare often require working with time-to-event prediction tasks including prognostication of an adverse event, re-hospitalization or death.
2 code implementations • 22 Feb 2022 • Chirag Nagpal, Mononito Goswami, Keith Dufendach, Artur Dubrawski
Estimation of treatment efficacy of real-world clinical interventions involves working with continuous outcomes such as time-to-death, re-hospitalization, or a composite event that may be subject to censoring.
4 code implementations • 16 Jan 2021 • Chirag Nagpal, Steve Yadlowsky, Negar Rostamzadeh, Katherine Heller
Survival analysis is a challenging variation of regression modeling because of the presence of censoring, where the outcome measurement is only partially known, due to, for example, loss to follow up.
no code implementations • 14 Apr 2020 • Chirag Nagpal, Robert E. Tillman, Prashant Reddy, Manuela Veloso
We consider the problem of aggregating predictions or measurements from a set of human forecasters, models, sensors or other instruments which may be subject to bias or miscalibration and random heteroscedastic noise.
3 code implementations • 2 Mar 2020 • Chirag Nagpal, Xinyu Rachel Li, Artur Dubrawski
We describe a new approach to estimating relative risks in time-to-event prediction problems with censored data in a fully parametric manner.
1 code implementation • 14 May 2019 • Chirag Nagpal, Rohan Sangave, Amit Chahar, Parth Shah, Artur Dubrawski, Bhiksha Raj
Semi-parametric survival analysis methods like the Cox Proportional Hazards (CPH) regression (Cox, 1972) are a popular approach for survival analysis.
no code implementations • 8 May 2019 • Chirag Nagpal, Dennis Wei, Bhanukiran Vinzamuri, Monica Shekhar, Sara E. Berger, Subhro Das, Kush R. Varshney
The dearth of prescribing guidelines for physicians is one key driver of the current opioid epidemic in the United States.
no code implementations • 23 Jun 2017 • Abhilasha Ravichander, Shruti Rijhwani, Rajat Kulshreshtha, Chirag Nagpal, Tadas Baltrušaitis, Louis-Philippe Morency
In this work, we focus on improving learning for such hierarchical models and demonstrate our method on the task of speaker trait prediction.