Adaptive and optimized COVID-19 vaccination strategies across geographical regions and age groups

1 code implementation • 24 May 2021 • Jeta Molla, Alejandro Ponce de León Chávez, Takayuki Hiraoka, Tapio Ala-Nissila, Mikko Kivelä, Lasse Leskelä

We evaluate the efficiency of various heuristic strategies for allocating vaccines against COVID-19 and compare them to strategies found using optimal control theory.

Separating Polarization from Noise: Comparison and Normalization of Structural Polarization Measures

1 code implementation • 18 Jan 2021 • Ali Salloum, Ted Hsuan Yun Chen, Mikko Kivelä

We analyse eight of such methods and show that all of them yield high polarization scores even for random networks with similar density and degree distributions to typical real-world networks.

Social and Information Networks Physics and Society Applications

Burst-tree decomposition of time series reveals the structure of temporal correlations

1 code implementation • 31 Jul 2019 • Hang-Hyun Jo, Takayuki Hiraoka, Mikko Kivelä

In this paper we propose a method of decomposing an event sequence into a set of IETs and a burst tree, which exactly captures the structure of temporal correlations that is entirely missing in the analysis of IET distributions.

Data Analysis, Statistics and Probability