01 · Established research

Network Robustness & Resilience

How do real-world networks respond when their most important nodes or links are removed?

Our research investigates vulnerability, attack strategies, fallback mechanisms, link weights and sparsification/thresholding to understand how network structure shapes resilience.

Interactive research motif

Research perspective

From centrality-based attacks to weight-thresholded networks, this research programme develops increasingly realistic ways to measure and improve robustness.

Selected publications

2025

Impact of Weight Thresholding on the Robustness of Complex Networks to Central Node Attack Strategies

John, Jisha Mariyam; Bellingeri, Michele; Lekha, Divya Sindhu; Cassi, Davide; Alfieri, Roberto;
BOOK OF ABSTRACT NetSci X 2025
2024

Robustness of real-world networks after weight thresholding with strong link removal

John, Jisha Mariyam; Bellingeri, Michele; Lekha, Divya Sindhu; Cassi, Davide; Alfieri, Roberto;
Mathematics · Vol. 12.0 · pp. 1568
2023

Effect of Weight Thresholding on the Robustness of Real-World Complex Networks to Central Node Attacks

John, J M; Bellingeri, M; Lekha, D S; Casdi, D; Alfieri, R;
Mathematics · Vol. 11.0 · pp. 3482
2023

A Procedure of Weight Thresholding on Complex Networks

John, Jisha Mariyam; Lekha, Divya Sindhu;
2023 International Conference on Emerging Techniques in Computational Intelligence (ICETCI) · pp. 119-121
2021

Vulnerability of link-weighted complex networks in central attacks and fallback strategy

Divya P.B., Divya Sindhu Lekha, T.P. Johnson, Kannan Balakrishnan;
Physica A: Statistical Mechanics and its Applications
2021

Need for a realistic measure of attack severity in centrality based node attack strategies

John, Jisha Mariyam; Lekha, Divya Sindhu;
International Conference on Complex Networks and Their Applications · pp. 857-866
2021

Attack Vulnerability of Complex Networks: A Bibliometric Analysis

Jisha Mariyam John, Divya Sindhu Lekha;
THE 8TH SATELLITE ON QUANTIFYING SUCCESS , NETWORKS 2021
2020

Central attacks in complex networks: A revisit with new fallback strategy

Lekha, Divya Sindhu; Balakrishnan, Kannan;
Physica A: Statistical Mechanics and its Applications · Vol. 549.0 · pp. 124347
2018

Security of Cyber-Physical System under Budget-Constraints - A Complex Network Approach

K.S., Sruthi; Lekha, Divya Sindhu; A, Sreekumar; Balakrishnan, Kannan;
International Conference on Discrete Mathematics and its Applications to Network Science
2017

Attack Vulnerability of Complex Networks in Center-Based Strategies

Lekha, Divya Sindhu; Balakrishnan, Kannan;
arXiv preprint arXiv:1712.04107

From published work to current questions

This page is grounded in the supplied Google Scholar publication export. Current projects, collaborators and new publications can be linked here as the research programme evolves.