Yash Ravipati

Computer Science & Economics at Harvard

gargantua0.00 s here ≈ 0.000 days on earth

Research

Some of my favorite research

HMS
area
Clinical AI & Medical Imaging
where
Harvard Medical School · Mass General Brigham
topics
Foundation Models · Self-Supervised Learning · Computer Vision · Segmentation · Survival Modeling
brain mri · segmentation

Most of my research is here. I build deep learning models that extract clinical biomarkers from routine CT and MRI scans.

One focus is body composition: muscle loss (sarcopenia) strongly predicts survival in cancer patients, so I helped build a pipeline that segments neck muscle on head and neck cancer CTs and links it to survival and treatment toxicity. It is now being tested in clinical settings. I also worked on automated temporalis muscle measurement from brain MRI, which we used to build growth charts from over 23,000 scans.

More recently I worked on BrainIAC, a brain MRI foundation model trained with self-supervised contrastive learning. It adapts to seven downstream tasks, from brain age estimation to IDH mutation prediction, and outperforms supervised baselines when labeled data is limited. I've also worked on PET/CT tumor segmentation and on survival models that combine tumor and body composition features.

UCLA
area
Brain-Computer Interfaces
where
UCLA
topics
Machine Learning · Deep Learning · EEG Decoding · Signal Processing
p300 speller · eeg

I worked on machine learning for brain-computer interfaces, with the goal of restoring communication for patients with brain stem injuries.

In one project, I benchmarked classical and deep learning models for P300 classification on EEG from 75 subjects. EEG-Inception, a CNN, significantly outperformed the standard SWLDA approach when trained across subjects, which points toward BCIs that don't need to be calibrated for each patient.

I also worked on predicting freezing of gait in Parkinson's disease and detecting epileptic seizures, and presented some of this work at international conferences.

HBS
area
Empirical Finance
where
Harvard Business School · Prof. Victoria Ivashina
topics
Private Equity · Subscription Lines · Panel Data · STATA
j-curvesub lineno line

I worked on subscription lines of credit, the loans private equity funds take out against their investors' commitments so they can invest now and call the capital later. The question was how much funds have come to rely on them, and what that changes for the pensions that back those funds.

I built the dataset behind the project in STATA, linking each fund's cash flows to its credit line balance over time, and used it to track how that borrowing has changed across fund vintages and sizes.

On Rotation

  • When Breath Becomes AirPaul Kalanithi · 2016
  • The Three-Body ProblemCixin Liu · 2008
  • The Great GatsbyF. Scott Fitzgerald · 1925
  • Life of PiYann Martel · 2001
  • The MartianAndy Weir · 2011