Cork researcher applying maths to solve social problems in LA

peter-fennell

Posted on: 8th November, 2016

Category: News

Contributor: West Cork People

A Cork-born researcher is using maths to discover how information, behaviour and trends spread through social networks and is finding unusual applications for his work including on the streets of Los Angeles.

Applied mathematics researcher Peter Fennell, who completed his PhD in University of Limerick’s Mathematics Applications Consortium for Science and Industry (MACSI), was recently granted a James S. McDonnell Foundation Postdoctoral Fellowship in Studying Complex Systems.

Last year, there were nine recipients of the prestigious fellowship worth $200,000, only three of which went to applicants from outside of the United States. Peter was the only successful Irish applicant.

This grant gave Peter, who is from Ballincollig, the opportunity to work in any institution in the United States. He has recently taken up his Fellowship at the University of Southern California in Information Sciences Institute led by Professor Kristina Lerman.

“During my PhD, I studied mathematically how phenomena spread through networks – groups of interconnected units – using tools such as mathematical modelling, calculus, statistics and linear algebra. Now I am applying these methodologies to study different types of spreading behaviour in social networks,” Peter explained.

Only weeks into his fellowship, Peter is finding interesting applications of his work. “I had a meeting last week with people involved in social work. The reason their work is relevant to me, and vice versa, is because they are working with networks of homeless people here. The people are interconnected through friendship and peer relationships, and the challenge for the social workers is how can they influence these networks?” he outlined.

“Many of the people in this network have addiction problems, so the social workers want to spread a good behaviour, like rehabilitation. We have to examine how to do that in the most effective way. People are influenced by their connections so if you can spread a behaviour in a social network it can be more effective than trying to introduce it from the outside,” Peter continued.

“It is a classic problem in network science, who is the best person or node to seed or to start the spread of a good behaviour. If you focus your attention and resources on them, the behaviour can spread efficiently through the network,” he added.

Peter’s work could ultimately revolutionise the modelling of human behaviour.

According to UL’s Professor James Gleeson, “Peter’s award demonstrates that the SFI-funded research being carried out in MACSI and in the University of Limerick is at the cutting edge of applied mathematics research and has significant societal and scientific impact”.

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