Minimum cost flows, MDPs, and ℓ1-regression in nearly linear time for dense instances

J Van Den Brand, YT Lee, YP Liu, T Saranurak… - Proceedings of the 53rd …, 2021 - dl.acm.org
In this paper we provide new randomized algorithms with improved runtimes for solving
linear programs with two-sided constraints. In the special case of the minimum cost flow …

A strongly polynomial algorithm for approximate forster transforms and its application to halfspace learning

I Diakonikolas, C Tzamos, DM Kane - Proceedings of the 55th Annual …, 2023 - dl.acm.org
The Forster transform is a method of regularizing a dataset by placing it in radial isotropic
position while maintaining some of its essential properties. Forster transforms have played a …

Minimizing convex functions with integral minimizers

H Jiang - Proceedings of the 2021 ACM-SIAM Symposium on …, 2021 - SIAM
Given a separation oracle SO for a convex function f that has an integral minimizer inside a
box with radius R, we show how to efficiently find a minimizer of f using at most O (n (n+ log …

Convex Minimization with Integer Minima in Time

H Jiang, YT Lee, Z Song, L Zhang - arxiv preprint arxiv:2304.03426, 2023 - arxiv.org
Given a convex function $ f $ on $\mathbb {R}^ n $ with an integer minimizer, we show how
to find an exact minimizer of $ f $ using $ O (n^ 2\log n) $ calls to a separation oracle and …

Convex Minimization with Integer Minima in Õ(n4) Time

H Jiang, YT Lee, Z Song, L Zhang - Proceedings of the 2024 Annual ACM …, 2024 - SIAM
Given a convex function f on ℝ n with an integer minimizer, we show how to find an exact
minimizer of f using O (n 2 log n) calls to a separation oracle and O (n 4 log n) time. The …

Circuit imbalance measures and linear programming

F Ekbatani, B Natura, LA Végh - Surveys in combinatorics, 2022 - cambridge.org
We study properties and applications of various circuit imbalance measures associated with
linear spaces. These measures describe possible ratios between nonzero entries of support …

Revisiting Tardos's framework for linear programming: faster exact solutions using approximate solvers

D Dadush, B Natura, LA Végh - 2020 IEEE 61st Annual …, 2020 - ieeexplore.ieee.org
In breakthrough work, Tardos (Oper. Res.'86) gave a proximity based framework for solving
linear programming (LP) in time depending only on the constraint matrix in the bit complexity …

What tropical geometry tells us about the complexity of linear programming

X Allamigeon, P Benchimol, S Gaubert, M Joswig - SIAM review, 2021 - SIAM
Tropical geometry has been recently used to obtain new complexity results in convex
optimization and game theory. In this paper, we present an application of this approach to a …

No self-concordant barrier interior point method is strongly polynomial

X Allamigeon, S Gaubert, N Vandame - … of the 54th Annual ACM SIGACT …, 2022 - dl.acm.org
It is an open question to determine if the theory of self-concordant barriers can provide an
interior point method with strongly polynomial complexity in linear programming. In the …

Interior point methods are not worse than Simplex

X Allamigeon, D Dadush, G Loho… - 2022 IEEE 63rd …, 2022 - ieeexplore.ieee.org
Whereas interior point methods provide polynomial-time linear programming algorithms, the
running time bounds depend on bit-complexity or condition measures that can be …