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08.28.25
FOLDS seminar: Heaviside Composite Optimization: A new paradigm of optimization
Zoom link: https://upenn.zoom.us/j/98220304722 A Heaviside function is an indicator function of a semi-infinite interval. A Heaviside composite function is a Heaviside function composed with a multivariate function that may be […]
08.28.25
FOLDS seminar: Algorithmic stability for regression and classification
In a supervised learning setting, a model fitting algorithm is unstable if small perturbations to the input (the training data) can often lead to large perturbations in the output (say, […]
08.25.25
FOLDS Seminar: Positive random walks and positive-semidefinite random matrices
On the real line, a random walk that can only move in the positive direction is very unlikely to remain close to its starting point. After a fixed number of […]
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