Lecture
LCN2 seminar January 2026
- Date
- Friday 30 January 2026
- Time
- Address
- Gorlaeus
- Room
- BM. 2.26
78th LCN2 seminar
Speaker: Huijuan Wang (TU Delft)
Title: Role of Nodes and Links in Spreading Processes on Temporal Higher-order Networks
Abstract: Human social interactions or contacts usually occur at specific times rather than continuously. They can be represented as temporal networks or as temporal hypergraphs when an interaction involves a group of individuals. Such networks facilitate the spread of information, opinion and epidemics. In this talk, I will address the role of nodes and links in a dynamic process in relation to their network properties. First, we consider a spreading process starting from a single seed node on a temporal network. The average number of nodes infected over a given period starting from one seed node is called the influence of that node. When predicting nodal influence in the long term, the temporal network is usually only observable upto the time of prediction and only locally around the seed node due to data accessibility. The question is how to utilize the partially observed temporal network around each node to estimate the ranking of nodes by spreading influence. Second, we consider a spreading process on temporal hypergraphs. The question is which types of hyperlinks contribute more to the spreading process, i.e., lead to more nodes being infected directly via their activation. We identify the relation between network properties of a node and its influence, as well as between properties of a hyperlink and its contribution to the process. To this end, we introduce theoretically grounded centrality metrics specifically designed for addressing these two problems.
Snacks and drinks will be available after the seminar at the Fusiebar.