Search Results for author: Marios Papachristou

Found 3 papers, 3 papers with code

Core-periphery Models for Hypergraphs

1 code implementation1 Jun 2022 Marios Papachristou, Jon Kleinberg

Our inference algorithm is capable of learning embeddings that correspond to the reputation (rank) of a node within the hypergraph.

Sublinear Domination and Core-Periphery Networks

1 code implementation4 Mar 2021 Marios Papachristou

In this paper we devise a generative random network model with core-periphery properties whose core nodes act as sublinear dominators, that is, if the network has $n$ nodes, the core has size $o(n)$ and dominates the entire network.

Social and Information Networks

Truncated Log-concave Sampling with Reflective Hamiltonian Monte Carlo

1 code implementation25 Feb 2021 Apostolos Chalkis, Vissarion Fisikopoulos, Marios Papachristou, Elias Tsigaridas

We introduce Reflective Hamiltonian Monte Carlo (ReHMC), an HMC-based algorithm, to sample from a log-concave distribution restricted to a convex body.

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