This is a link to the AnnualSales.xls worksheet that will be used in the Boston University EMBA pre-program Excel / Stata workshop. Here are the class slides in Powerpoint and pdf formats.
These data are based on public disclosures of standards-related intellectual property at thirteen Standard Setting Organizations. The data are described in several of my papers, and there is additional documentation available at the link. The data include information on SSO, company, disclosure date, patent and/or application numbers, and licensing terms (when available). I am currently working with Rudi Bekkers on a major upgrade of these data.
Link to a zip file containing Stata code, IETF publication data and documentation for "Standard Setting Committees: Consensus Governance for Shared technology Platforms" (forthcoming AER). The files in this directory can be used to generate all Tables and Figures in the working paper. Please cite me if you use these data or programs.
Link to a zip file containing data (csv and Stata format) and code for the paper "Status, Quality and Attention: What's in a (Missing) Name?", Management Science, Feb 2011, 274--290, co-authored with David Waguespack.
The Stata code, data and documentation for Mehta Rysman and Simcoe (Identifying the Age Profile of Patent Citations: New Estimates of Knowledge Diffusion) are available via the data archive for the Journal of Applied Econometrics. The link takes you to the main page for the archive, To find our materials, you will need to search on any of the author last names.
Anne Bowers, Rosemarie Ziedonis and I organized a session with this title for the 2012 Academy of Management meetings. Materials from each presentations are contained in the following links. The presenters were Pierre Azoulay, Alberto Galasso, Tim Simcoe, Jesper Sorenson, David Waguespack, and Rosemarie Ziedonis.
I'm working to develop on some rules-of-thumb for good etiquette in empirical research. I find it very useful in PhD teaching, where students are often looking for a checklist of things to do once they have chosen a particular method. This list is a work in progress, so feel free to send me your suggestions.
This is a list of some classic readings in strategy that might interest the curious incoming or first year PhD student in search of some big themes for their research.
Wooldridge (JOE 1999) shows that the fixed effects Poisson estimator produces consistent estimates of the parameters in an unobserved components multiplicative panel data model under very general conditions. In fact, all that is required is an assumption about the conditional mean of the dependent variable. This is quite useful for two reasons. First, it implies that fixed effects Poisson estimation is appropriate for any non-negative dependent variable—not just count data that follow a Poisson distribution. Second, the estimator is robust to arbitrary patterns of serial correlation. In spite of these obvious attractions, the fixed-effect Poisson estimator does not appear to be widely used in practice. This is partly because statistical software does not generally allow computation of the appropriate (robust) standard errors for inference. This ado file runs Stata’s pre-packaged fixed effects Poisson estimator and then computes the robust standard errors suggested by Wooldridge (1999).
A Stata r-class routine for calculating the index of agglomeration (or disperion) proposed in Rysman and Greenstein (2003). This statistic is closely related to the Ellison and Glaeser (1998) “dartboard index” can be used to test for dispersion.
Boston University
School of Management
595 Commonwealth Ave.
Boston, MA 02215
(617) 358-5725
tsimcoe@bu.edu