Search Results for author: Emil Saucan

Found 7 papers, 2 papers with code

Rewiring Networks for Graph Neural Network Training Using Discrete Geometry

no code implementations16 Jul 2022 Jakub Bober, Anthea Monod, Emil Saucan, Kevin N. Webster

Information over-squashing is a phenomenon of inefficient information propagation between distant nodes on networks.

Curved Markov Chain Monte Carlo for Network Learning

no code implementations7 Oct 2021 John Sigbeku, Emil Saucan, Anthea Monod

We present a geometrically enhanced Markov chain Monte Carlo sampler for networks based on a discrete curvature measure defined on graphs.

Network geometry and market instability

no code implementations25 Sep 2020 Areejit Samal, Hirdesh K. Pharasi, Sarath Jyotsna Ramaia, Harish Kannan, Emil Saucan, Jürgen Jost, Anirban Chakraborti

The complexity of financial markets arise from the strategic interactions among agents trading stocks, which manifest in the form of vibrant correlation patterns among stock prices.

Ricci Curvature Based Volumetric Segmentation of the Auditory Ossicles

no code implementations26 Jun 2020 Na Lei, Jisui Huang, Yuxue Ren, Emil Saucan, ZhenChang Wang

Compared to the state-of-the-art methods which usually use the gradient operator and some normalization terms, we propose to add a Ricci curvature term to the commonly employed energy function.

Computed Tomography (CT) Segmentation

Comparative analysis of two discretizations of Ricci curvature for complex networks

no code implementations20 Dec 2017 Areejit Samal, R. P. Sreejith, Jiao Gu, Shiping Liu, Emil Saucan, Jürgen Jost

We have performed an empirical comparison of two distinct notions of discrete Ricci curvature for graphs or networks, namely, the Forman-Ricci curvature and Ollivier-Ricci curvature.

Differential Geometry Discrete Mathematics

Forman curvature for complex networks

1 code implementation1 Mar 2016 R. P. Sreejith, Karthikeyan Mohanraj, Jürgen Jost, Emil Saucan, Areejit Samal

We adapt Forman's discretization of Ricci curvature to the case of undirected networks, both weighted and unweighted, and investigate the measure in a variety of model and real-world networks.

Molecular Networks Disordered Systems and Neural Networks Physics and Society

Ricci Curvature of the Internet Topology

2 code implementations17 Jan 2015 Chien-Chun Ni, Yu-Yao Lin, Jie Gao, Xianfeng David Gu, Emil Saucan

Analysis of Internet topologies has shown that the Internet topology has negative curvature, measured by Gromov's "thin triangle condition", which is tightly related to core congestion and route reliability.

Social and Information Networks Computational Geometry Networking and Internet Architecture Physics and Society

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