🗓️ 2023-05-22 — Jeremy’s thesis defence

Jérémy Richard defended his thesis on May 22, 2023. Here is a short summary.

This thesis studies tourist behaviour using a generic, interactive analysis approach. It examines tourist trajectories in cities and museums. Experiments collected movement data in a tourist city using GPS signals. The study first focuses on reconstructing museum visitors’ trajectories using indoor positioning equipment, in a constrained environment.

A generic, multi-aspect semantic enrichment model then supplements individual trajectories with contextual data such as the names of city districts and museum rooms, outdoor weather and indoor mobile application data. The enriched trajectories, called semantic trajectories, are analysed using formal concept analysis and the GALACTIC platform. The platform analyses complex, heterogeneous data as a hierarchy of groups of individuals sharing common behaviours. Finally, the thesis examines the ReducedContextCompletion algorithm, which enables interactive navigation of a concept lattice and lets analysts focus on the aspects of the data they wish to explore.