Search Results for author: Mohamed Bouguessa

Found 11 papers, 5 papers with code

Hierarchical Aggregations for High-Dimensional Multiplex Graph Embedding

1 code implementation28 Dec 2023 Kamel Abdous, Nairouz Mrabah, Mohamed Bouguessa

To address these issues, we propose HMGE, a novel embedding method based on hierarchical aggregation for high-dimensional multiplex graphs.

Graph Embedding Link Prediction +1

A Contrastive Variational Graph Auto-Encoder for Node Clustering

1 code implementation28 Dec 2023 Nairouz Mrabah, Mohamed Bouguessa, Riadh Ksantini

Thanks to a newly identified term, our lower bound can escape Posterior Collapse and has more flexibility to account for the difference between the inference and generative models.

Clustering Contrastive Learning +2

Graph Attention Network for Camera Relocalization on Dynamic Scenes

no code implementations29 Sep 2022 Mohamed Amine Ouali, Mohamed Bouguessa, Riadh Ksantini

We devise a graph attention network-based approach for learning a scene triangle mesh representation in order to estimate an image camera position in a dynamic environment.

Camera Relocalization Graph Attention

TopoDetect: Framework for Topological Features Detection in Graph Embeddings

no code implementations8 Oct 2021 Maroun Haddad, Mohamed Bouguessa

TopoDetect is a Python package that allows the user to investigate if important topological features, such as the Degree of the nodes, their Triangle Count, or their Local Clustering Score, are preserved in the embeddings of graph representation models.

Clustering

Modeling Regime Shifts in Multiple Time Series

no code implementations20 Sep 2021 Etienne Gael Tajeuna, Mohamed Bouguessa, Shengrui Wang

The originality of our approach lies in modeling interactions between time series in regime identification and in modeling time-dependent regime transition probabilities, usually assumed to be static in existing work.

Time Series Time Series Forecasting

Rethinking Graph Auto-Encoder Models for Attributed Graph Clustering

1 code implementation19 Jul 2021 Nairouz Mrabah, Mohamed Bouguessa, Mohamed Fawzi Touati, Riadh Ksantini

We study these issues from two aspects: (1) there is a trade-off between Feature Randomness and Feature Drift when clustering and reconstruction are performed at the same level, and (2) the problem of Feature Drift is more pronounced for GAE models, compared with vanilla auto-encoder models, due to the graph convolutional operation and the graph decoding design.

Clustering Graph Clustering +1

Exploring the Representational Power of Graph Autoencoder

1 code implementation22 Jun 2021 Maroun Haddad, Mohamed Bouguessa

Furthermore, we ask if the presence of these structures in the embeddings is necessary for a better performance on the downstream tasks, such as clustering and classification.

Clustering Graph Embedding +2

Context Matters: Self-Attention for Sign Language Recognition

2 code implementations12 Jan 2021 Fares Ben Slimane, Mohamed Bouguessa

For that reason, we apply attention to synchronize and help capture entangled dependencies between the different sign language components.

Sign Language Recognition

Mixing syntagmatic and paradigmatic information for concept detection

no code implementations9 Apr 2019 Louis Chartrand, Mohamed Bouguessa

In the last decades, philosophers have begun using empirical data for conceptual analysis, but corpus-based conceptual analysis has so far failed to develop, in part because of the absence of reliable methods to automatically detect concepts in textual data.

Topic Models Word Embeddings

Detecting Large Concept Extensions for Conceptual Analysis

no code implementations18 Jun 2017 Louis Chartrand, Jackie C. K. Cheung, Mohamed Bouguessa

When performing a conceptual analysis of a concept, philosophers are interested in all forms of expression of a concept in a text---be it direct or indirect, explicit or implicit.

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