Designing efficient estimators which are robust to aggressive noise models
Sushrut Karmalkar got his Ph.D. from The University of Texas at Austin with Prof. Adam Klivans, before which he was at the Chennai Mathematical Institute.
PhD, Computer Science, The University of Texas at Austin
I broadly work in the areas of the theory of machine learning and computational learning theory. Here are some examples of my work
- Outlier-robust Regression:
Can we recover a high dimensional linear function or univariate polynomial function from a constant fraction of the samples being arbitrarily corrupted? What about half? more than half? We explore these problems and either show that these are possible or demonstrate lower bounds.
- Learning one-layer neural networks.
We show that even for the Gaussian distribution, it is hard to agnostically learn a one-layer neural network. We also show that this is possible if we weaken the objective.
- Inverse problems under generative model assumptions.
Can we sample-efficiently recover signals which are sampled from a 'natural-looking' distribution from their linear measurements? We demonstrate an instance optimal algorithm for this problem when the measurements are drawn from the output of a Generative Adversarial Network (GAN).
- CRA/NSF Computing Innovation Fellowship
- Continuing Graduate Fellowship, UT Austin