The PhD defence will be in Abels utsikt - Niels Henrik Abels hus. The host of the session will moderate the technicalities while the chair of the defence will moderate the disputation.
Ex auditorio questions: the chair of the defence will invite the audience to ask questions ex auditorio at the end of the defence.
- Submit request to access (available from 19th of January 1:15 pm until 2nd of February 1:15 pm)
Trial lecture
2nd of February, time: 10:15 am, room 1259 (Abels utsikt).
Graphical modelling inference in high dimensions
Main research findings
When a new product is launched on a customer base, its adoption process begins. From here on out, two main drivers will inform how new adoptions are made. New adoptions might spur out peer-to-peer interactions between customers. This usually happens when early adopters are enthusiast about the product, and they share it with their immediate friends. Or, on the other hand, new adoptions might be linked to external factors, such as marketing campaigns. In this work, I propose a method that is able to assess the relative strengths of both drivers for a given adoption process. Performing this task correctly is instrumental to predict the product’s success into the future. In detail, peer-to-peer influence is detected with the aid of a graph representation of social links between customers.
First, I tested the method on real-world data, with satisfactory results. Secondly, I investigated the robustness of the method under the realistic assumption of incomplete social graph information. The method’s performances proved to not deteriorate when large portions of the social graphs are not observed. Lastly, I investigate an extended version of the method which is able to draw more information from the customer social graph.
Adjudication committee
- Associate Professor Veronica Vinciotti, University of Trento
- Senior Researcher Francesco Di Ruscio, National Institute of Public Heath
- Professor Geir Storvik, University of Oslo
Supervisors
- Associate Professor Ida Scheel, University of Oslo
- Associate Professor Kristoffer H. Hellton, Oslo Metropolitan University
- Dr. Geoffrey Canright
Chair of defence
Head of Department Geir Dahl.
Host of the session
Professor Geir Storvik, University of Oslo