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PhD Dissertation Defense Announcement by Kalyani Selvarajah:"Investigation of Team Formation in Dynamic Social Networks"

Wednesday, March 18, 2020 - 09:30 to 12:30


The School of Computer Science is pleased to present…

PhD Dissertation Defense by: Kalyani Selvarajah

Date: Wednesday March 18th 2020
Time:  9:30 am to 12:30 pm
Location: Lambton Tower 3105


Identifying successful teams for completing given tasks under some constraints is a challenging process and proves to be an NP-Hard problem. In this dissertation, we model a computational framework to discover teams of experts in various applications and predict the potential for collaboration in the future from a given Social Network. Inspired by an evolutionary search technique using a higher-order cultural evolution, a framework is proposed using Knowledge-Based Cultural Algorithms to identify teams from co-authorship, industrial settings, and healthcare settings. We also propose a unified framework by incorporating several required cost functions as a multi objectives optimization framework. 
To predict future interaction with the teams, we analyze the temporal behaviors of the vertices in a dynamic social network and employ Multi-Layer Perceptron as a classifier to predict the link formation. Additionally, to reduce the complexity of the prediction process, we examine the benefits of extracting subgraph of a target link and its feature for future interaction. We use Convolutional Neural Networks to extract higher-level features of subgraph efficiently and Long Short-Term Memory neural networks to learn long-range dependencies of sequential data and capture the evolving patterns of the subgraph in the dynamic networks.
Keywords: Social Network Analysis, Team formation, Link Prediction, Cultural Algorithm, Deep learnings


Thesis Committee:

Internal Reader: Dr. Saeed Samet
Internal Reader: Dr. Sherif Saad Ahmed
External Reader: Dr. Kathryn Pfaff
External Examiner: Dr. Hamid Usefi
Advisor(s): Dr. Ziad Kobti and Dr. Mehdi Kargar
Chair:    TBA

PhD Dissertation Defense Announcement


5113 Lambton Tower 401 Sunset Ave. Windsor ON, N9B 3P4 (519) 253-3000 Ext. 3716