@Inproceedings{EPTCS323.5, author = {Breiner, Spencer and Pollard, Blake and Subrahmanian, Eswaran and Marie-Rose, Olivier}, year = {2020}, title = {Modeling Hierarchical System with Operads}, editor = {Baez, John and Coecke, Bob}, booktitle = {{\rm Proceedings} Applied Category Theory 2019, {\rm University of Oxford, UK, 15-19 July 2019}}, series = {Electronic Proceedings in Theoretical Computer Science}, volume = {323}, publisher = {Open Publishing Association}, pages = {72-83}, doi = {10.4204/EPTCS.323.5}, }