Defining Clusters of Related Industries
---- Acknowledgments ----
This project has been funded by a grant from the Economic Development Administration of the U.S. Department of Commerce. We received financial support from Harvard Business School. We thank Bill Simpson, Xiang Ao, Rich Bryden, and Sam Zyontz for their invaluable assistance with the analysis. We also acknowledge the insightful comments of two anonymous reviewers, Harald Bathelt, Ed Feser, Frank Neffke, Juan Alcacer, Bill Kerr, Fiona Murray, Christian Ketels, James Delaney, Brandon Stewart, Muhammed Yildirim, Ram Mudambi, Sergiy Protsiv, Jorge Guzman, Sarah Jane Maxted and the participants in the Industry Studies Association Conference, NBER Productivity Seminar, Temple University Seminar, and the Symposium on the Use of Innovative Datasets for Regional Economic Research at George Washington University. The views expressed herein are those of the authors and do not necessarily reflect the views of the National Bureau of Economic Research.
---- Disclosure of Financial Relationships for Mercedes Delgado ----
The author would like to acknowledge the hospitality offered by the TIES Group at MIT Sloan.
---- Disclosure of Financial Relationships for Michael E. Porter ----
The author is the Bishop William Lawrence University Professor of the Institute for Strategy and Competitiveness at Harvard Business School. This author has drawn on the findings of this research for compensated speaking engagements and to offer policy advice in a number of settings.
---- Disclosure of Financial Relationships for Scott Stern ----
The author is the the Director of the NBER Innovation Policy Working Group. This author has drawn on the findings of this research for compensated speaking engagements and to offer policy advice in a number of settings, including through his work as the Faculty Director of the MIT Regional Entrepreneurship Acceleration Program.