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On a geometric problem of machine learning

Algebraic Geometry and Number Theory Seminar

Date: Thursday, December 19, 2024 13:00 - 15:00
Speaker: Richard Rimanyi (University of North Carolina at Chapel Hill)
Location: Office Bldg West / Ground floor / Heinzel Seminar Room (I21.EG.101)
Series: Mathematics and CS Seminar
Host: Tamas Hausel

In this talk we will enumerate the main reasons for a collection of matrices multiplying to 0. Our motivation is Bayesian Learning Theory, where one of the goals is to progressively approximate an unknown distribution using data generated from that distribution. A key component in this framework is a function K (relative entropy), which is often highly singular. The invariants of the singularities of K (in the style of log canonical threshold') are related to how well the Singular Learning Theory "generalizes"---or, in Machine Learning terms, how efficiently the model can be trained. Computing the singularity invariants in real-life scenarios of Machine Learning is notoriously difficult. In this talk, we focus on an elementary example and compute the learning coefficients of Linear Neural Networks. Joint work with S. P. Lehalleur.


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