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Ravi Kannan

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titleconferencedate
Latent Variable models and Subset SmoothingThe Role of TCS in Modern Machine Learning2026-05-26
Defines Subset Smoothed polytope K' as the convex hull of averages over k‑subsets of the n noisy samples and proves K' ≈ K when many latent points lie near…
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Detecting Weak Signals via Hypothesis TestingRobust and High-Dimensional Statistics (Simons Institute workshop, 2018)2018-10-29
Binary test between product noise P0 and a weak mixture signal (1−ε)P0+εP1 uses the chi‑square distance D = χ2(P1||P0) to set a sharp threshold: if ε√D → 0 no…
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Intro and Foundations of Data Science IFoundations of Data Science Boot Camp 20182018-08-27
A compact course first promotes a finite-moment method that replaces exponential moment proofs with Rth moments and an R! bound to get Gaussian-like moment…
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Foundations of Data Science IIFoundations of Data Science Boot Camp 20182018-08-27
Claims that SVD identifies the k-dimensional subspace spanned by Gaussian means, yielding a polynomial-time algorithm to learn K spherical Gaussians with…
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Topic Modeling: A Provable Spectral MethodSpectral Algorithms: From Theory to Practice 20142014-10-27
Provides a provable pipeline that recovers K topic vectors by combining threshold then SVD with k‑means and a catchword extraction step, under four explicit…
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Optimizing with TensorsWorkshop on Succinct Data Representations and Applications (Simons Institute Big Data 2013)2013-09-16
Reductions show Max‑3SAT and planted‑clique become problems of maximizing a cubic form over unit vectors by encoding clauses or parity into an n×n×n tensor; a…
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Theory and Big DataBig Data Boot Camp 20132013-09-03
Argues that linear algebra + randomness actually gives provable wins: computing the best-fit k-subspace via SVD and projecting reduces dimension and often acts…
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