Search Results for author: Vladimir Kolmogorov

Found 13 papers, 1 papers with code

One-sided Frank-Wolfe algorithms for saddle problems

no code implementations29 Jan 2021 Vladimir Kolmogorov, Thomas Pock

In case $h^*$ is the indicator function of a linear constraint and function $f$ is quadratic, we show a $O(1/n^2)$ convergence rate on the dual objective, requiring $O(n \log n)$ calls of $lmo$.

Optimization and Control

Solving relaxations of MAP-MRF problems: Combinatorial in-face Frank-Wolfe directions

no code implementations CVPR 2023 Vladimir Kolmogorov

We consider the problem of solving LP relaxations of MAP-MRF inference problems, and in particular the method proposed recently in (Swoboda, Kolmogorov 2019; Kolmogorov, Pock 2021).

MAP inference via Block-Coordinate Frank-Wolfe Algorithm

1 code implementation CVPR 2019 Paul Swoboda, Vladimir Kolmogorov

We present a new proximal bundle method for Maximum-A-Posteriori (MAP) inference in structured energy minimization problems.

Graph Matching

Efficient Optimization for Rank-based Loss Functions

no code implementations CVPR 2018 Pritish Mohapatra, Michal Rolinek, C. V. Jawahar, Vladimir Kolmogorov, M. Pawan Kumar

We provide a complete characterization of the loss functions that are amenable to our algorithm, and show that it includes both AP and NDCG based loss functions.

Information Retrieval Retrieval

Total variation on a tree

no code implementations26 Feb 2015 Vladimir Kolmogorov, Thomas Pock, Michal Rolinek

We consider the problem of minimizing the continuous valued total variation subject to different unary terms on trees and propose fast direct algorithms based on dynamic programming to solve these problems.

A Multi-Plane Block-Coordinate Frank-Wolfe Algorithm for Training Structural SVMs with a Costly max-Oracle

no code implementations CVPR 2015 Neel Shah, Vladimir Kolmogorov, Christoph H. Lampert

Structural support vector machines (SSVMs) are amongst the best performing models for structured computer vision tasks, such as semantic image segmentation or human pose estimation.

Image Segmentation Pose Estimation +2

Combining pattern-based CRFs and weighted context-free grammars

no code implementations22 Apr 2014 Rustem Takhanov, Vladimir Kolmogorov

We propose a {\em Grammatical Pattern-Based CRF model }(\GPB) that combines the two in a natural way.

Proceedings of The 38th Annual Workshop of the Austrian Association for Pattern Recognition (ÖAGM), 2014

no code implementations14 Apr 2014 Vladimir Kolmogorov, Christoph Lampert, Emilie Morvant, Rustem Takhanov

The 38th Annual Workshop of the Austrian Association for Pattern Recognition (\"OAGM) will be held at IST Austria, on May 22-23, 2014.

Potts model, parametric maxflow and k-submodular functions

no code implementations7 Oct 2013 Igor Gridchyn, Vladimir Kolmogorov

Furthermore, the output of our algorithm allows to speed-up the subsequent alpha expansion for the unlabeled part, or can be used as it is for time-critical applications.

Combinatorial Optimization

A new look at reweighted message passing

no code implementations22 Sep 2013 Vladimir Kolmogorov

We propose a new family of message passing techniques for MAP estimation in graphical models which we call {\em Sequential Reweighted Message Passing} (SRMP).

Simplifying Energy Optimization using Partial Enumeration

no code implementations7 Mar 2013 Carl Olsson, Johannes Ulen, Yuri Boykov, Vladimir Kolmogorov

Energies with high-order non-submodular interactions have been shown to be very useful in vision due to their high modeling power.

Inference algorithms for pattern-based CRFs on sequence data

no code implementations1 Oct 2012 Rustem Takhanov, Vladimir Kolmogorov

(Komodakis & Paragios, 2009) gave an $O(n L)$ algorithm for computing the MAP.

Generalized roof duality and bisubmodular functions

no code implementations NeurIPS 2010 Vladimir Kolmogorov

We say that the relaxation is {\em totally half-integral} if $\hat f(\bx)$ is a polyhedral function with half-integral extreme points $\bx$, and this property is preserved after adding an arbitrary combination of constraints of the form $x_i=x_j$, $x_i=1-x_j$, and $x_i=\gamma$ where $\gamma\in\{0, 1,\frac{1}{2}\}$ is a constant.

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