no code implementations • 20 Apr 2023 • Max F. Burg, Florian Wenzel, Dominik Zietlow, Max Horn, Osama Makansi, Francesco Locatello, Chris Russell
While we find that personalizing diffusion models towards the target data outperforms simpler prompting strategies, we also show that using the training data of the diffusion model alone, via a simple nearest neighbor retrieval procedure, leads to even stronger downstream performance.
no code implementations • 14 Apr 2023 • Jaime Spencer, C. Stella Qian, Michaela Trescakova, Chris Russell, Simon Hadfield, Erich W. Graf, Wendy J. Adams, Andrew J. Schofield, James Elder, Richard Bowden, Ali Anwar, Hao Chen, Xiaozhi Chen, Kai Cheng, Yuchao Dai, Huynh Thai Hoa, Sadat Hossain, Jianmian Huang, Mohan Jing, Bo Li, Chao Li, Baojun Li, Zhiwen Liu, Stefano Mattoccia, Siegfried Mercelis, Myungwoo Nam, Matteo Poggi, Xiaohua Qi, Jiahui Ren, Yang Tang, Fabio Tosi, Linh Trinh, S. M. Nadim Uddin, Khan Muhammad Umair, Kaixuan Wang, YuFei Wang, Yixing Wang, Mochu Xiang, Guangkai Xu, Wei Yin, Jun Yu, Qi Zhang, Chaoqiang Zhao
This paper discusses the results for the second edition of the Monocular Depth Estimation Challenge (MDEC).
1 code implementation • 28 Mar 2023 • Guillaume Rochette, Chris Russell, Richard Bowden
We show how our approach can be used for motion transfer between individuals; novel view synthesis of individuals captured from just a single camera; to synthesize individuals from any virtual viewpoint; and to re-render people in novel poses.
1 code implementation • 26 Feb 2023 • Matthäus Kleindessner, Michele Donini, Chris Russell, Muhammad Bilal Zafar
We revisit the problem of fair principal component analysis (PCA), where the goal is to learn the best low-rank linear approximation of the data that obfuscates demographic information.
no code implementations • 5 Feb 2023 • Brent Mittelstadt, Sandra Wachter, Chris Russell
Many current fairness measures suffer from both fairness and performance degradation, or "levelling down," where fairness is achieved by making every group worse off, or by bringing better performing groups down to the level of the worst off.
1 code implementation • 12 Jan 2023 • Yuejiang Liu, Alexandre Alahi, Chris Russell, Max Horn, Dominik Zietlow, Bernhard Schölkopf, Francesco Locatello
Recent years have seen a surge of interest in learning high-level causal representations from low-level image pairs under interventions.
1 code implementation • 22 Nov 2022 • Jaime Spencer, C. Stella Qian, Chris Russell, Simon Hadfield, Erich Graf, Wendy Adams, Andrew J. Schofield, James Elder, Richard Bowden, Heng Cong, Stefano Mattoccia, Matteo Poggi, Zeeshan Khan Suri, Yang Tang, Fabio Tosi, Hao Wang, Youmin Zhang, Yusheng Zhang, Chaoqiang Zhao
This challenge evaluated the progress of self-supervised monocular depth estimation on the challenging SYNS-Patches dataset.
1 code implementation • 2 Aug 2022 • Jaime Spencer, Chris Russell, Simon Hadfield, Richard Bowden
It is likely that many papers were not only optimized for particular datasets, but also for errors in the data and evaluation criteria.
1 code implementation • 19 Jul 2022 • Florian Wenzel, Andrea Dittadi, Peter Vincent Gehler, Carl-Johann Simon-Gabriel, Max Horn, Dominik Zietlow, David Kernert, Chris Russell, Thomas Brox, Bernt Schiele, Bernhard Schölkopf, Francesco Locatello
Since out-of-distribution generalization is a generally ill-posed problem, various proxy targets (e. g., calibration, adversarial robustness, algorithmic corruptions, invariance across shifts) were studied across different research programs resulting in different recommendations.
Adversarial Robustness
Out-of-Distribution Generalization
+1
no code implementations • 8 Jul 2022 • Yash Sharma, Yi Zhu, Chris Russell, Thomas Brox
While self-supervised learning has enabled effective representation learning in the absence of labels, for vision, video remains a relatively untapped source of supervision.
1 code implementation • 9 Apr 2022 • Michael Lohaus, Matthäus Kleindessner, Krishnaram Kenthapadi, Francesco Locatello, Chris Russell
Based on this observation, we investigate an alternative fairness approach: we add a second classification head to the network to explicitly predict the protected attribute (such as race or gender) alongside the original task.
no code implementations • CVPR 2022 • Avishkar Saha, Oscar Mendez, Chris Russell, Richard Bowden
Estimating a semantically segmented bird's-eye-view (BEV) map from a single image has become a popular technique for autonomous control and navigation.
no code implementations • CVPR 2022 • Dominik Zietlow, Michael Lohaus, Guha Balakrishnan, Matthäus Kleindessner, Francesco Locatello, Bernhard Schölkopf, Chris Russell
Algorithmic fairness is frequently motivated in terms of a trade-off in which overall performance is decreased so as to improve performance on disadvantaged groups where the algorithm would otherwise be less accurate.
1 code implementation • 24 Nov 2021 • Guillaume Rochette, Chris Russell, Richard Bowden
We show how our approach can be used for motion transfer between individuals; novel view synthesis of individuals captured from just a single camera; to synthesize individuals from any virtual viewpoint; and to re-render people in novel poses.
1 code implementation • 3 Oct 2021 • Avishkar Saha, Oscar Mendez Maldonado, Chris Russell, Richard Bowden
We show how a novel form of transformer network can be used to map from images and video directly to an overhead map or bird's-eye-view (BEV) of the world, in a single end-to-end network.
1 code implementation • ICLR 2022 • Lukas Schott, Julius von Kügelgen, Frederik Träuble, Peter Gehler, Chris Russell, Matthias Bethge, Bernhard Schölkopf, Francesco Locatello, Wieland Brendel
An important component for generalization in machine learning is to uncover underlying latent factors of variation as well as the mechanism through which each factor acts in the world.
1 code implementation • 7 May 2021 • Matthäus Kleindessner, Samira Samadi, Muhammad Bilal Zafar, Krishnaram Kenthapadi, Chris Russell
We initiate the study of fairness for ordinal regression.
2 code implementations • NeurIPS 2020 • Herman Yau, Chris Russell, Simon Hadfield
We present a novel form of explanation for Reinforcement Learning, based around the notion of intended outcome.
1 code implementation • 11 Jun 2020 • Jacob Abernethy, Pranjal Awasthi, Matthäus Kleindessner, Jamie Morgenstern, Chris Russell, Jie Zhang
We propose simple active sampling and reweighting strategies for optimizing min-max fairness that can be applied to any classification or regression model learned via loss minimization.
1 code implementation • 12 May 2020 • Sandra Wachter, Brent Mittelstadt, Chris Russell
Through this proposal for procedural regularity in the identification and assessment of automated discrimination, we clarify how to build considerations of fairness into automated systems as far as possible while still respecting and enabling the contextual approach to judicial interpretation practiced under EU non-discrimination law.
no code implementations • 21 Jan 2020 • Nicholas Asher, Soumya Paul, Chris Russell
This partiality makes it possible to hide explicit biases present in the algorithm that may be injurious or unfair. We investigate how easy it is to uncover these biases in providing complete and fair explanations by exploiting the structure of the set of counterfactuals providing a complete local explanation.
no code implementations • CVPR 2021 • Andrew Elliott, Stephen Law, Chris Russell
We present a simple regularization of adversarial perturbations based upon the perceptual loss.
1 code implementation • NeurIPS 2019 • Chris Russell, Matteo Toso, Neill Campbell
We present a new technique for the learning of continuous energy functions that we refer to as Wibergian Learning.
no code implementations • 13 Sep 2019 • Guillaume Rochette, Chris Russell, Richard Bowden
We present a novel data-driven regularizer for weakly-supervised learning of 3D human pose estimation that eliminates the drift problem that affects existing approaches.
no code implementations • ICCV 2019 • Armin Mustafa, Chris Russell, Adrian Hilton
We introduce the first approach to solve the challenging problem of unsupervised 4D visual scene understanding for complex dynamic scenes with multiple interacting people from multi-view video.
1 code implementation • 2 Jan 2019 • Chris Russell
This paper proposes new search algorithms for counterfactual explanations based upon mixed integer programming.
no code implementations • 4 Nov 2018 • Brent Mittelstadt, Chris Russell, Sandra Wachter
Recent work on interpretability in machine learning and AI has focused on the building of simplified models that approximate the true criteria used to make decisions.
1 code implementation • 4 Aug 2018 • Denis Tome, Matteo Toso, Lourdes Agapito, Chris Russell
We propose a CNN-based approach for multi-camera markerless motion capture of the human body.
Ranked #169 on
3D Human Pose Estimation
on Human3.6M
no code implementations • 18 Jul 2018 • Stephen Law, Brooks Paige, Chris Russell
Not only do few quantitative methods exist that can measure the urban environment, but that the collection of such data is both costly and subjective.
no code implementations • 6 Jun 2018 • Matt J. Kusner, Chris Russell, Joshua R. Loftus, Ricardo Silva
Most approaches in algorithmic fairness constrain machine learning methods so the resulting predictions satisfy one of several intuitive notions of fairness.
no code implementations • 15 May 2018 • Joshua R. Loftus, Chris Russell, Matt J. Kusner, Ricardo Silva
In this work, we argue for the importance of causal reasoning in creating fair algorithms for decision making.
1 code implementation • 10 Jan 2018 • Pankaj Pansari, Chris Russell, M. Pawan Kumar
Submodular extensions of an energy function can be used to efficiently compute approximate marginals via variational inference.
no code implementations • NeurIPS 2017 • Chris Russell, Matt J. Kusner, Joshua Loftus, Ricardo Silva
In this paper, we show how it is possible to make predictions that are approximately fair with respect to multiple possible causal models at once, thus mitigating the problem of exact causal specification.
5 code implementations • 1 Nov 2017 • Sandra Wachter, Brent Mittelstadt, Chris Russell
We suggest data controllers should offer a particular type of explanation, unconditional counterfactual explanations, to support these three aims.
no code implementations • 4 Aug 2017 • Qi Liu-Yin, Rui Yu, Lourdes Agapito, Andrew Fitzgibbon, Chris Russell
We demonstrate the use of shape-from-shading (SfS) to improve both the quality and the robustness of 3D reconstruction of dynamic objects captured by a single camera.
1 code implementation • NeurIPS 2017 • Akash Srivastava, Lazar Valkov, Chris Russell, Michael U. Gutmann, Charles Sutton
Deep generative models provide powerful tools for distributions over complicated manifolds, such as those of natural images.
3 code implementations • NeurIPS 2017 • Matt J. Kusner, Joshua R. Loftus, Chris Russell, Ricardo Silva
Machine learning can impact people with legal or ethical consequences when it is used to automate decisions in areas such as insurance, lending, hiring, and predictive policing.
11 code implementations • CVPR 2017 • Denis Tome, Chris Russell, Lourdes Agapito
We propose a unified formulation for the problem of 3D human pose estimation from a single raw RGB image that reasons jointly about 2D joint estimation and 3D pose reconstruction to improve both tasks.
Ranked #20 on
Weakly-supervised 3D Human Pose Estimation
on Human3.6M
no code implementations • ICCV 2015 • Rui Yu, Chris Russell, Neill D. F. Campbell, Lourdes Agapito
In contrast, our method makes use of a single RGB video as input; it can capture the deformations of generic shapes; and the depth estimation is dense, per-pixel and direct.
no code implementations • 13 Nov 2015 • Rui Yu, Chris Russell, Lourdes Agapito
We propose a novel Linear Program (LP) based formula- tion for solving jigsaw puzzles.
no code implementations • CVPR 2015 • Anton van den Hengel, Chris Russell, Anthony Dick, John Bastian, Daniel Pooley, Lachlan Fleming, Lourdes Agapito
We propose a method to recover the structure of a compound scene from multiple silhouettes.
no code implementations • 9 Sep 2014 • Francesco Setti, Chris Russell, Chiara Bassetti, Marco Cristani
Then, as a main contribution, we present a brand new method for the automatic detection of groups in still images, which is based on a graph-cuts framework for clustering individuals; in particular we are able to codify in a computational sense the sociological definition of F-formation, that is very useful to encode a group having only proxemic information: position and orientation of people.
no code implementations • CVPR 2013 • Nikolaos Pitelis, Chris Russell, Lourdes Agapito
In this work, we return to the underlying mathematical definition of a manifold and directly characterise learning a manifold as finding an atlas, or a set of overlapping charts, that accurately describe local structure.
no code implementations • CVPR 2013 • Parthipan Siva, Chris Russell, Tao Xiang, Lourdes Agapito
We propose a principled probabilistic formulation of object saliency as a sampling problem.
no code implementations • 11 Sep 2011 • Srikumar Ramalingam, Chris Russell, Lubor Ladicky, Philip H. S. Torr
E +n^4 {\log}^{O(1)} n)$ where $E$ is the time required to evaluate the function and $n$ is the number of variables \cite{Lee2015}.