The emergence of smart devices and IoT leads to the appearance of O2O service to blur the difference
between online and offline. As online services' merits were added to the offline market, it caused a change
in the dynamics of the offline industry, which means the offline-space's digitization. Unlike these changing
aspects of the offline market, exhibition industry grows steadily in the industry, however it is also possible
to create a new value added by combining O2O service. We conducted a survey targeting 20 spectators in
'2015 Seoul Design Festival' at COEX. The survey was used to analysis of the spatial structure and
generate the dataset for machine learning. We identified problems with the analysis study of the existing
spatial structure, and based on this investigation we propose a new method for analyzing a spatial structure.
Also by processing a machine learning technique based on the generated dataset, we propose a novel
evaluation model of exhibition-space cells for O2O service layout.