Research

Distribution Alignment

Distribution alignment has the opposite objective of classification and is useful for constraining ML problems.

Localized Learning

Localized learning avoids end-to-end learning by updating model parts via non-global objectives.

Explainable AI

Explaining distribution shifts and prediction uncertainty are important for modern AI systems.

Selected Publications

A central theme in federated learning (FL) is the fact that client data distributions are often not independent and identically …
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Unsupervised distribution alignment estimates a transformation that maps two or more source distributions to a shared aligned …
Preprint Project

While normalizing flows for continuous data have been extensively researched, flows for discrete data have only recently been explored. …
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Distribution shift can have fundamental consequences such as signaling a change in the operating environment or significantly reducing …
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The unsupervised task of aligning two or more distributions in a shared latent space has many applications including fair …
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Shapley values have become one of the most popular feature attribution explanation methods. However, most prior work has focused on …
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While previous distribution shift detection approaches can identify if a shift has occurred, these approaches cannot localize which …
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In practical applications of machine learning, it is necessary to look beyond standard metrics such as test accuracy in order to …
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We consider objective evaluation measures of explanations of complex black-box machine learning models. We propose simple robust …
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Project

We propose a unified framework for deep density models by formally defining density destructors. A density destructor is an invertible …
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Existing research on label noise often focuses on simple uniform or classconditional noise. However, in many real-world settings, label …
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The Poisson distribution has been widely studied and used for modeling univariate count-valued data. Multivariate generalizations of …
Preprint PDF Code

Square Root Graphical Models (SQR), a novel class of parametric graphical models that provides multivariate generalizations of …
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We propose a novel distribution that generalizes the Multinomial distribution to enable dependencies between dimensions. Our novel …
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We develop a fast algorithm for the Admixture of Poisson MRFs (APM) topic model and propose a novel metric to directly evaluate this …
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This paper introduces a new topic model based on an admixture of Poisson Markov Random Fields (APM), which can model dependencies …
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Other Publications

Owing to the sheer volume of text generated by a microblog site like Twitter, it is often difficult to fully understand what is being …
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Noise cancellation in an MRI environment is difficult due to the high noise levels that are in the spectral range of human speech. This …
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Due to the sheer volume of text generated by a micro log site like Twitter, it is often difficult to fully understand what is being …
PDF DOI

Teaching

An introduction to artificial intelligence (AI).
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A graduate-level project-based introduction to artificial intelligence (AI) with a primary focus on unsupervised learning. The lecture …
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A graduate-level project-based introduction to artificial intelligence (AI) with a primary focus on unsupervised learning. The lecture …
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This course introduces Python programming to students through data science problems. Students learn Python concepts as well as …
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A graduate-level project-based introduction to artificial intelligence (AI) with a primary focus on unsupervised learning. The lecture …
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This course introduces Python programming to students through data science problems. Students learn Python concepts as well as …
Last updated on

A graduate-level project-based introduction to artificial intelligence (AI) with a primary focus on unsupervised learning. The lecture …
Last updated on

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