Search Results for author: David Dehaene

Found 6 papers, 3 papers with code

Re-parameterizing VAEs for stability

no code implementations25 Jun 2021 David Dehaene, Rémy Brossard

We propose a theoretical approach towards the training numerical stability of Variational AutoEncoders (VAE).

Graph Context Encoder: Graph Feature Inpainting for Graph Generation and Self-supervised Pretraining

no code implementations18 Jun 2021 Oriel Frigo, Rémy Brossard, David Dehaene

We propose the Graph Context Encoder (GCE), a simple but efficient approach for graph representation learning based on graph feature masking and reconstruction.

Graph Generation Graph Representation Learning

Realistic molecule optimization on a learned graph manifold

no code implementations3 Jun 2021 Rémy Brossard, Oriel Frigo, David Dehaene

Deep learning based molecular graph generation and optimization has recently been attracting attention due to its great potential for de novo drug design.

Graph Generation Molecular Graph Generation

Graph convolutions that can finally model local structure

1 code implementation30 Nov 2020 Rémy Brossard, Oriel Frigo, David Dehaene

Despite quick progress in the last few years, recent studies have shown that modern graph neural networks can still fail at very simple tasks, like detecting small cycles.

Graph Property Prediction

Anomaly localization by modeling perceptual features

1 code implementation12 Aug 2020 David Dehaene, Pierre Eline

Although unsupervised generative modeling of an image dataset using a Variational AutoEncoder (VAE) has been used to detect anomalous images, or anomalous regions in images, recent works have shown that this method often identifies images or regions that do not concur with human perception, even questioning the usability of generative models for robust anomaly detection.

Anomaly Detection

Iterative energy-based projection on a normal data manifold for anomaly localization

1 code implementation ICLR 2020 David Dehaene, Oriel Frigo, Sébastien Combrexelle, Pierre Eline

Indeed, an autoencoder trained on normal data is expected to only be able to reconstruct normal features of the data, allowing the segmentation of anomalous pixels in an image via a simple comparison between the image and its autoencoder reconstruction.

Ranked #81 on Anomaly Detection on MVTec AD (Segmentation AUROC metric)

Unsupervised Anomaly Detection

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