Search Results for author: Erik J. Bekkers

Found 18 papers, 15 papers with code

Latent Field Discovery In Interacting Dynamical Systems With Neural Fields

1 code implementation NeurIPS 2023 Miltiadis Kofinas, Erik J. Bekkers, Naveen Shankar Nagaraja, Efstratios Gavves

Systems of interacting objects often evolve under the influence of field effects that govern their dynamics, yet previous works have abstracted away from such effects, and assume that systems evolve in a vacuum.

On genuine invariance learning without weight-tying

1 code implementation7 Aug 2023 Artem Moskalev, Anna Sepliarskaia, Erik J. Bekkers, Arnold Smeulders

We demonstrate that even when a network learns to correctly classify samples on a group orbit, the underlying decision-making in such a model does not attain genuine invariance.

Decision Making

Learned Gridification for Efficient Point Cloud Processing

no code implementations22 Jul 2023 Putri A. van der Linden, David W. Romero, Erik J. Bekkers

As a result, operations that rely on neighborhood information scale much worse for point clouds than for grid data, specially for large inputs and large neighborhoods.

Regular SE(3) Group Convolutions for Volumetric Medical Image Analysis

1 code implementation24 Jun 2023 Thijs P. Kuipers, Erik J. Bekkers

Motivated by the recent work on separable group convolutions, we devise a SE(3) group convolution kernel separated into a continuous SO(3) (rotation) kernel and a spatial kernel.

An Exploration of Conditioning Methods in Graph Neural Networks

1 code implementation3 May 2023 Yeskendir Koishekenov, Erik J. Bekkers

The flexibility and effectiveness of message passing based graph neural networks (GNNs) induced considerable advances in deep learning on graph-structured data.

Attribute

Modelling Long Range Dependencies in $N$D: From Task-Specific to a General Purpose CNN

1 code implementation25 Jan 2023 David M. Knigge, David W. Romero, Albert Gu, Efstratios Gavves, Erik J. Bekkers, Jakub M. Tomczak, Mark Hoogendoorn, Jan-Jakob Sonke

Performant Convolutional Neural Network (CNN) architectures must be tailored to specific tasks in order to consider the length, resolution, and dimensionality of the input data.

Towards a General Purpose CNN for Long Range Dependencies in $N$D

1 code implementation7 Jun 2022 David W. Romero, David M. Knigge, Albert Gu, Erik J. Bekkers, Efstratios Gavves, Jakub M. Tomczak, Mark Hoogendoorn

The use of Convolutional Neural Networks (CNNs) is widespread in Deep Learning due to a range of desirable model properties which result in an efficient and effective machine learning framework.

ChebLieNet: Invariant Spectral Graph NNs Turned Equivariant by Riemannian Geometry on Lie Groups

2 code implementations NeurIPS 2021 Hugo Aguettaz, Erik J. Bekkers, Michaël Defferrard

Surfing on the success of graph- and group-based neural networks, we take advantage of the recent developments in the geometric deep learning field to derive a new approach to exploit any anisotropies in data.

Towards Lightweight Controllable Audio Synthesis with Conditional Implicit Neural Representations

no code implementations14 Nov 2021 Jan Zuiderveld, Marco Federici, Erik J. Bekkers

The high temporal resolution of audio and our perceptual sensitivity to small irregularities in waveforms make synthesizing at high sampling rates a complex and computationally intensive task, prohibiting real-time, controllable synthesis within many approaches.

Audio Synthesis

Exploiting Redundancy: Separable Group Convolutional Networks on Lie Groups

1 code implementation25 Oct 2021 David M. Knigge, David W. Romero, Erik J. Bekkers

In addition, thanks to the increase in computational efficiency, we are able to implement G-CNNs equivariant to the $\mathrm{Sim(2)}$ group; the group of dilations, rotations and translations.

Computational Efficiency Rotated MNIST

Wavelet Networks: Scale-Translation Equivariant Learning From Raw Time-Series

1 code implementation9 Jun 2020 David W. Romero, Erik J. Bekkers, Jakub M. Tomczak, Mark Hoogendoorn

In this work, we fill this gap by leveraging the symmetries inherent to time-series for the construction of equivariant neural network.

Descriptive Time Series +2

Roto-Translation Equivariant Convolutional Networks: Application to Histopathology Image Analysis

1 code implementation20 Feb 2020 Maxime W. Lafarge, Erik J. Bekkers, Josien P. W. Pluim, Remco Duits, Mitko Veta

This study is focused on histopathology image analysis applications for which it is desirable that the arbitrary global orientation information of the imaged tissues is not captured by the machine learning models.

BIG-bench Machine Learning Breast Tumour Classification +5

Attentive Group Equivariant Convolutional Networks

1 code implementation ICML 2020 David W. Romero, Erik J. Bekkers, Jakub M. Tomczak, Mark Hoogendoorn

Although group convolutional networks are able to learn powerful representations based on symmetry patterns, they lack explicit means to learn meaningful relationships among them (e. g., relative positions and poses).

B-Spline CNNs on Lie Groups

2 code implementations ICLR 2020 Erik J. Bekkers

The impact and potential of our approach is studied on two benchmark datasets: cancer detection in histopathology slides in which rotation equivariance plays a key role and facial landmark localization in which scale equivariance is important.

Face Alignment

Template Matching via Densities on the Roto-Translation Group

no code implementations10 Mar 2016 Erik J. Bekkers, Marco Loog, Bart M. ter Haar Romeny, Remco Duits

We propose a template matching method for the detection of 2D image objects that are characterized by orientation patterns.

Template Matching Translation

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