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arXiv research

A locally-built, LLM-digested index of recent arXiv papers in quant finance, geometry/topology, and statistical ML — keyword search served straight from SQLite on this machine.

168,695 papers · 148 categories

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0111 · Jun 202019922001200920172026
2 results for “proxy-gradient”
Latent Transformations for Discrete-Data Normalising Flowscs.LG

A new method for discrete data normalizing flows using latent transformations.

problem Challenges in parameterizing bijective transformations for discrete data.
method Predict a distribution over latent transformations to make the marginal likelihood differentiable.
result Discrete-data normalizing flows can be trained using gradient-based learning with unbiased score function estimation.
normalizing flowsdiscrete datalatent transformationsscore functionbinary MNIST
2020-06-11abs ↗pdf ↗
A Barrier-Metric First-Order Method for Linearly Constrained Bilevel Optimizationmath.OC

New method tackles bilevel optimization with polyhedral constraints.

problem Challenges in bilevel optimization with active-set changes and expensive Hessian inversions.
method Logarithmic barrier smoothing and proxy-gradient algorithm for differentiable approximation.
result Stationarity rates of O(K−2/3)O(K^{-2/3}) in deterministic setting and O(K−2/5)O(K^{-2/5}) under stochastic noise.
bilevel optimizationpolyhedral constraintslogarithmic barrierproxy-gradientstationarity rates
2026-05-12abs ↗pdf ↗