An information processing device according to an aspect of the present invention includes a damage information acquisition unit that acquires damage information on damage of a structure, a damage vector generation unit that vectorizes the acquired damage information to generate a damage vector, and a hierarchical structure information generation unit that generates hierarchical structure information that is information hierarchically representing a connection relationship between the damage vectors on the basis of the generated damage vector. Since the hierarchical structure information that is information hierarchically representing the connection relationship between damage vectors is generated, it is possible to easily recognize the connection relationship between the damage vectors and to easily perform analysis and/or search of the damage vector through the hierarchical structure information.