activity
20182020
most citedSAFA: a Semi-Asynchronous Protocol for Fast Federated Learning with Low Overhead

359 citations · 468 across the 8 of their papers we have counts for

collaborators

8 papers

cs.AI2020★ 23 cited

Elementary Effects Analysis of factors controlling COVID-19 infections in computational simulation reveals the importance of Social Distancing and Mask Usage

Kelvin K. F. Li, Stephen A. Jarvis, Fayyaz Minhas

COVID-19 was declared a pandemic by the World Health Organization (WHO) on March 11th, 2020. With half of the world's countries in lockdown as of April due to this pandemic, monito…

cs.CY2020★ 7 cited

Population Mapping in Informal Settlements with High-Resolution Satellite Imagery and Equitable Ground-Truth

Konstantin Klemmer, Godwin Yeboah, João Porto de Albuquerque +1

We propose a generalizable framework for the population estimation of dense, informal settlements in low-income urban areas--so called 'slums'--using high-resolution satellite imag…

cs.DB2020★ 1 cited

kD-STR: A Method for Spatio-Temporal Data Reduction and Modelling

Liam Steadman, Nathan Griffiths, Stephen Jarvis +3

Analysing and learning from spatio-temporal datasets is an important process in many domains, including transportation, healthcare and meteorology. In particular, data collected by…

cs.DC2019★ 359 cited

SAFA: a Semi-Asynchronous Protocol for Fast Federated Learning with Low Overhead

Wentai Wu, Ligang He, Weiwei Lin +3

Federated learning (FL) has attracted increasing attention as a promising approach to driving a vast number of end devices with artificial intelligence. However, it is very challen…

physics.soc-ph2019★ 1 cited

Graph Hierarchy: A novel approach to understanding hierarchical structures in complex networks

Giannis Moutsinas, Choudhry Shuaib, Weisi Guo +1

Trophic coherence, a measure of a graph's hierarchical organisation, has been shown to be linked to a graph's structural and dynamical aspects such as cyclicity, stability and norm…

physics.soc-ph2018★ 63 cited

Resilience or Robustness: Identifying Topological Vulnerabilities in Rail Networks

Alessio Pagani, Guillem Mosquera, Aseel Alturki +5

Many critical infrastructure systems have network structure and are under stress. Despite their national importance, the complexity of large-scale transport networks means we do no…

cs.CY2018

Modeling Rape Reporting Delays Using Spatial, Temporal and Social Features

Konstantin Klemmer, Daniel B. Neill, Stephen A. Jarvis

We present a novel approach to estimate the delay observed between the occurrence and reporting of rape crimes. We explore spatial, temporal and social effects in sparse aggregated…

cs.SI2018★ 14 cited

Community Structures, Interactions and Dynamics in London's Bicycle Sharing Network

Fernando Munoz-Mendez, Konstantin Klemmer, Ke Han +1

Bikesharing schemes are transportation systems that not only provide an efficient mode of transportation in congested urban areas, but also improve last-mile connectivity with publ…