Search Results for author: Gaël Poux-Médard

Found 11 papers, 5 papers with code

Dynamic Mixed Membership Stochastic Block Model for Weighted Labeled Networks

no code implementations12 Apr 2023 Gaël Poux-Médard, Julien Velcin, Sabine Loudcher

On the other hand, a new family of Mixed Membership Stochastic Block Models (MMSBM) allows to model static labeled networks under the assumption of mixed-membership clustering.

Stochastic Block Model

Dirichlet-Survival Process: Scalable Inference of Topic-Dependent Diffusion Networks

no code implementations12 Dec 2022 Gaël Poux-Médard, Julien Velcin, Sabine Loudcher

Building on recent Dirichlet-Point processes literature, we introduce the Houston (Hidden Online User-Topic Network) model, that jointly considers all those features in a non-parametric unsupervised framework.

Point Processes Position

Multivariate Powered Dirichlet Hawkes Process

no code implementations12 Dec 2022 Gaël Poux-Médard, Julien Velcin, Sabine Loudcher

Finally, we develop a use case of the MPDHP on Reddit data.

Interactions in Information Spread

no code implementations16 Sep 2022 Gaël Poux-Médard

The amount of data that gets generated daily is beyond human comprehension, and appeals for new information retrieval strategies.

Information Retrieval Retrieval

Properties of Reddit News Topical Interactions

no code implementations16 Sep 2022 Gaël Poux-Médard, Julien Velcin, Sabine Loudcher

Most models of information diffusion online rely on the assumption that pieces of information spread independently from each other.

Serialized Interacting Mixed Membership Stochastic Block Model

1 code implementation16 Sep 2022 Gaël Poux-Médard, Julien Velcin, Sabine Loudcher

In this work, we show that these models are all special cases of a single global framework: the Serialized Interacting Mixed membership Stochastic Block Model (SIMSBM).

Recommendation Systems Stochastic Block Model +1

Le Processus Powered Dirichlet-Hawkes comme A Priori Flexible pour Clustering Temporel de Textes

no code implementations29 Jan 2022 Gaël Poux-Médard, Julien Velcin, Sabine Loudcher

PDHP also alleviates the hypothesis that textual content and temporal dynamics are perfectly correlated.

Information Interaction Profile of Choice Adoption

1 code implementation28 Apr 2021 Gaël Poux-Médard, Julien Velcin, Sabine Loudcher

We introduce an efficient method to infer both the entities interaction network and its evolution according to the temporal distance separating interacting entities; together, they form the interaction profile.

Interactions in information spread: quantification and interpretation using stochastic block models

1 code implementation9 Apr 2020 Gaël Poux-Médard, Julien Velcin, Sabine Loudcher

Here, we propose a new model, the Interactive Mixed Membership Stochastic Block Model (IMMSBM), which investigates the role of interactions between entities (hashtags, words, memes, etc.)

Stochastic Block Model

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