However, there is another approach. This begins from the notion that the United States faces important economic problems and that computational economics can over the long haul make important contributions to the management of some of these problems. We believe that our report has fully documented that computational methods have made significant contributions to economics in the past and that there is every reason to believe that the potential for future contributions is even greater.
This approach then continues by inquiring about (1) how many well-trained investigators there are who could make contributions if they had the necessary resources and (2) the size of the budget required for the typical investigator.
Consider first the number of investigators. One way to estimate the number of qualified individuals is to consider the top fifty departments in the country with an average of thirty economists in each department. This yields a pool of 1,500 economists. This is a very conservative estimate of the pool of talent since it does not include the many economists not in academics. Also it will be important to encourage interdisciplinary research in this field so that many of the qualified researchers are in other departments at universities.
If one-third of our conservative estimate of 1,500 economists are in the areas covered by computational economics then there would be 500 qualified investigators. In the strong competition for research support perhaps only a fourth of these qualified individuals would receive support. In this case there would be 125 investigators.
Next consider the question of the level of support for each investigator by calculating the annual support cost for a typical investigator.
Summer salary...................................15
Graduate student support........................20
Programmer or postdoctoral support..............20
Supplies and travel..............................5
Subtotal..............................60
Overhead (45% of subtotal).....................27
Hardware cost per year..........................20
Total per investigator per year..... 107
These numbers are a rough estimate but they give us a basis from
which to begin. So at 107 thousand dollars per investigator per
year and 125 investigators we get a total of roughly 13 million
dollars per year.
Then in addition, we believe that the budget should include funds for one or more large projects like the National Economics Server or other database and software projects. Estimate that we might need 3 million dollars per year for this plus 2 million a year for educational, postdoctoral and other programs. Then the grand total would be 18 million dollars per year.
A summary of the budget is presented below.
I. Items awarded through grants to Principal Investigators
Grants to 125 PI's @ 107.....................13,375
II. Items awarded separately
a. Economics Data Server Project....................3000
b. Workshops and conferences.........................500
c. Education projects................................300
d. Research experiences for undergraduate............200
e. Postdocs in a national competition; 15 @ 40......600
Subtotal...............................4,600
Grand total...........................17,975
The economist would query the NES and the national server would then, in turn, translate the user's request to the format required by the relevant database. The database would respond to the NES signal by forwarding the requested item by e-mail. There could be a number of servers on the system distributed at university or research institution sites, such as the NBER, with dedicated servers to accommodate NES inquiries. A simple initial pilot might be based on the model of the "netlib" gateway machine at AT&T Bell Labs, where the machine "reads" the user e-mail request by string-matching and automatically fills the user's software request from library files.
After experience with this pilot, a more adequate server system should be built on an object-oriented database design, such as those being developed in C++. The object-oriented design would accommodate not only the different "backend" filters that are required by the idiosyncratic file organizations of different databases, but permit the user to select from a variety of "front end" filters for mail delivery (such as file structures compatible with SAS, Splus, etc.). An object-oriented design would also facilitate pulling matched data from disparate database sources (often required in panel data analysis), edited or pre-processed data where data attributes include the transformation algorithms, or downloads of data with complex structures (such as those generated by models). Obviously, more efficient electronic transmission of large bulk data requests should also be explored.
Seed money for SIPP ACCESS and development of the PC- SIPPTEST database and reference materials was supported by Sloan Foundation grant \#B1987-46.