Leena C Vankadara

Applied Scientist II, Causality Lab@Amazon Research

vleena [AT] amazon.de

Bio

My broad interests lie in understanding the limits of learning by trying to answer questions such as when is learning possible and when is it not? Such questions are particularly interesting when posed in constrained settings, for instance, constraints on computational complexity or adversarial robustness. Understanding such fundamental limits foster the design of provably efficient and reliable Machine learning methods. More recently, I have been fascinated with statistical and causal properties of interpolating estimators in overparameterized model classes. You can find our recent work on this topic here. For a general overview of my work, please see my publications.

I joined Amazon Research as an Applied Scientist II, in January 2023. Previously, I was a Ph.D. candidate in the International Max Planck Research School for Intelligent Systems. I was jointly supervised by Debarghya Ghoshdastidar at the Theoretical Foundations of Artificial Intelligence, Technical University of Munich and Ulrike von Luxburg at the Theory of Machine learning group, University of Tuebingen.

Prospective Students

I'm actively looking for interns to work on the theory and science of deep learning! I'm especially looking for PhD students (who are preferably at the end of their PhD) with a strong background in theoretical aspects of ML, statistics, learning theory, or optimization.. If you are interested, email me with your CV and a brief description of your research interests.

Recent News

Publications

Most recent publications on Google Scholar.
indicates equal contribution.

Reinterpreting causal discovery as the task of predicting unobserved joint statistics

Dominik Janzing, Philipp M. Faller, Leena C Vankadara

A preprint: Arxiv'2023

A Consistent Estimator for Confounding Strength

Luca Rendsburg, Leena C Vankadara, Debarghya Ghosdastidar, Ulrike von Luxburg

A preprint: Arxiv'2022

Interpolation and Regularization for Causal Learning

Leena C Vankadara, Luca Rendsburg, Ulrike von Luxburg, Debarghya Ghoshdastidar

NeurIPS'22: Neural Information Processing Systems. 2022.

Causal Forecasting - Generalization Bounds for Autoregressive Models

Leena C Vankadara, Philipp Michael Faller, Mila Hardt, Lenon Minorics, Debarghya Ghoshdastidar, Dominik Janzing

UAI'22: Uncertainity in Artificial Intelligence. 2022.

Recovery Guarantees for Kernel-based Clustering under Non-parametric Mixture Models

Leena C Vankadara, Sebastian Bordt, Ulrike von Luxburg, Debarghya Ghoshdastidar

AISTATS'21: Artificial Intelligence and Statistics. 2021 (Oral presentation; 3% of all submissions)

On the optimality of kernels for high-dimensional clustering

Leena C Vankadara, Debarghya Ghoshdastidar

AISTATS'20: Artificial Intelligence and Statistics. 2020

Measures of distortion for machine learning

Leena C Vankadara, Ulrike von Luxburg

NeurIPS'18: Neural Information Processing Systems. 2018

Reinterpreting causal discovery as the task of predicting unobserved joint statistics

Dominik Janzing, Philipp M. Faller, Leena C Vankadara

A preprint: Arxiv'2023

A Consistent Estimator for Confounding Strength

Luca Rendsburg, Leena C Vankadara, Debarghya Ghosdastidar, Ulrike von Luxburg

A preprint: Arxiv'2022

Interpolation and Regularization for Causal Learning

Leena C Vankadara, Luca Rendsburg, Ulrike von Luxburg, Debarghya Ghoshdastidar

NeurIPS'22: Neural Information Processing Systems. 2022.

Causal Forecasting - Generalization Bounds for Autoregressive Models

Leena C Vankadara, Philipp Michael Faller, Mila Hardt, Lenon Minorics, Debarghya Ghoshdastidar, Dominik Janzing

UAI'22: Uncertainity in Artificial Intelligence. 2022.

Graphon based Clustering and Testing of Networks - Algorithms and Theory

Mahalakshmi Sabanayagam, Leena C Vankadara, Debarghya Ghoshdastidar

ICLR'22: International Conference on Learning Representations. 2022

Learning Theory Can (Sometimes) Explain Generalisation in Graph Neural Networks

Pascal Esser, Leena C Vankadara, Debarghya Ghoshdastidar

NeurIPS'21: Neural Information Processing Systems. 2021

Recovery Guarantees for Kernel-based Clustering under Non-parametric Mixture Models

Leena C Vankadara, Sebastian Bordt, Ulrike von Luxburg, Debarghya Ghoshdastidar

AISTATS'21: Artificial Intelligence and Statistics. 2021 (Oral presentation; 3% of all submissions)

Insights into Ordinal Embedding Algorithms - A Systematic Evaluation

Leena C Vankadara, Michael Lohaus, Siavash Haghiri, Faiz Ul Wahab, Ulrike von Luxburg

JMLR. 2023

On the optimality of kernels for high-dimensional clustering

Leena C Vankadara, Debarghya Ghoshdastidar

AISTATS'20: Artificial Intelligence and Statistics. 2020

Measures of distortion for machine learning

Leena C Vankadara, Ulrike von Luxburg

NeurIPS'18: Neural Information Processing Systems. 2018

Vitæ

Full Resume in PDF.

Productivity tools

I am an avid fan of productivity tools that enable me to make life more efficient, organized, and simply more enjoyable. There have been massive improvements in the productivity tools space in the past 5 years with tools like Notion that allow users to completely customize the tool according to their specific needs. BTW, if you have not heard of or used Notion yet, you are missing out. I rely on it every single day to manage every single aspect of my life.

Website Design

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