Search Results for author: Joachim Schreurs

Found 14 papers, 1 papers with code

Latent Space Exploration Using Generative Kernel PCA

no code implementations28 May 2021 David Winant, Joachim Schreurs, Johan A. K. Suykens

This connection has led to insights on how to use kernel PCA in a generative procedure, called generative kernel PCA.

Novelty Detection

Towards Deterministic Diverse Subset Sampling

no code implementations28 May 2021 Joachim Schreurs, Michaël Fanuel, Johan A. K. Suykens

Determinantal point processes (DPPs) are well known models for diverse subset selection problems, including recommendation tasks, document summarization and image search.

Document Summarization Image Retrieval +1

Leverage Score Sampling for Complete Mode Coverage in Generative Adversarial Networks

no code implementations6 Apr 2021 Joachim Schreurs, Hannes De Meulemeester, Michaël Fanuel, Bart De Moor, Johan A. K. Suykens

A generative model may overlook underrepresented modes that are less frequent in the empirical data distribution.

Determinantal Point Processes Implicitly Regularize Semi-parametric Regression Problems

no code implementations13 Nov 2020 Michaël Fanuel, Joachim Schreurs, Johan A. K. Suykens

Semi-parametric regression models are used in several applications which require comprehensibility without sacrificing accuracy.

Geophysics Point Processes +3

The Bures Metric for Taming Mode Collapse in Generative Adversarial Networks

no code implementations28 Sep 2020 Hannes De Meulemeester, Joachim Schreurs, Michaël Fanuel, Bart De Moor, Johan Suykens

However, under certain circumstances, the training of GANs can lead to mode collapse or mode dropping, i. e. the generative models not being able to sample from the entire probability distribution.

Outlier detection in non-elliptical data by kernel MRCD

1 code implementation5 Aug 2020 Joachim Schreurs, Iwein Vranckx, Mia Hubert, Johan A. K. Suykens, Peter J. Rousseeuw

The minimum regularized covariance determinant method (MRCD) is a robust estimator for multivariate location and scatter, which detects outliers by fitting a robust covariance matrix to the data.

Outlier Detection

Ensemble Kernel Methods, Implicit Regularization and Determinantal Point Processes

no code implementations24 Jun 2020 Joachim Schreurs, Michaël Fanuel, Johan A. K. Suykens

By using the framework of Determinantal Point Processes (DPPs), some theoretical results concerning the interplay between diversity and regularization can be obtained.

Point Processes regression

The Bures Metric for Generative Adversarial Networks

no code implementations16 Jun 2020 Hannes De Meulemeester, Joachim Schreurs, Michaël Fanuel, Bart De Moor, Johan A. K. Suykens

However, under certain circumstances, the training of GANs can lead to mode collapse or mode dropping, i. e. the generative models not being able to sample from the entire probability distribution.

Disentangled Representation Learning and Generation with Manifold Optimization

no code implementations12 Jun 2020 Arun Pandey, Michael Fanuel, Joachim Schreurs, Johan A. K. Suykens

Our analysis shows that such a construction promotes disentanglement by matching the principal directions in the latent space with the directions of orthogonal variation in data space.

Disentanglement Stochastic Optimization

Diversity sampling is an implicit regularization for kernel methods

no code implementations20 Feb 2020 Michaël Fanuel, Joachim Schreurs, Johan A. K. Suykens

The Nystr\"om approximation -- based on a subset of landmarks -- gives a low rank approximation of the kernel matrix, and is known to provide a form of implicit regularization.

Point Processes regression

Robust Generative Restricted Kernel Machines using Weighted Conjugate Feature Duality

no code implementations4 Feb 2020 Arun Pandey, Joachim Schreurs, Johan A. K. Suykens

Experiments show that the weighted RKM is capable of generating clean images when contamination is present in the training data.

Generative Restricted Kernel Machines

no code implementations25 Sep 2019 Arun Pandey, Joachim Schreurs, Johan A.K. Suykens

We introduce a novel framework for generative models based on Restricted Kernel Machines (RKMs) with multi-view generation and uncorrelated feature learning capabilities, called Gen-RKM.

Generative Restricted Kernel Machines: A Framework for Multi-view Generation and Disentangled Feature Learning

no code implementations19 Jun 2019 Arun Pandey, Joachim Schreurs, Johan A. K. Suykens

This paper introduces a novel framework for generative models based on Restricted Kernel Machines (RKMs) with joint multi-view generation and uncorrelated feature learning, called Gen-RKM.

Nyström landmark sampling and regularized Christoffel functions

no code implementations29 May 2019 Michaël Fanuel, Joachim Schreurs, Johan A. K. Suykens

In this context, we propose a deterministic and a randomized adaptive algorithm for selecting landmark points within a training data set.

Point Processes

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