Fig. 8.

Structure of the CroCo network ontology. The networks in the croco-repo are structured according to seven dimensions. Each dimension can be further structured according to dimension-specific ontologies, e.g. the Brenda Tissue Ontology for the blue Tissue/Cell-line dimension. In the croco-web and croco-cyto graphical user interfaces, the networks can be browsed in a recursive manner. a) shows the dimension and the ontologies used to organize the networks and the first recursion step, where all not yet selected dimensions are appended to the ‘leaf’ node ‘Homo sapiens’ in the Species dimension. The screenshot in b) shows a specific realization of the recursive browsing in croco-web. In croco-web and croco-cyto, only dimensions are visualized, which further separate the data. Here, the last column (#N) lists the number of the selected networks in the respective row