Introducing the RePEc Genealogy

September 28, 2012

A new RePEc service is born, the RePEc Genealogy, which collects and displays the academic family tree for economics. This is a crowd-sourced initiative, which means that any person registered with the RePEc Author Service can contribute information about oneself and others: institution and year where the terminal degree was obtained, advisor, and possibly students.

The collected data will be used in various ways. Currently, author profiles on IDEAS link back to relevant genealogy pages. The directory of institutions, EDIRC, has lists of alumni and their publications. In the future, when we have critical mass, we can use this data to properly rank young economists. Currently, we infer there start in the profession by dating their first publication. A graduation year would be more appropriate. Also, the genealogy data would also allow us to evaluate graduate departments.

Help make this service useful. You can add information by logging in using your RePEc Author Service credentials here. Thank you!

Plagiarism in Economics

February 16, 2011

We are all aware that plagiarism exists, and RePEc has helped expose quite a few cases through its open bibliographies. But sanctions for plagiarism are rather limited. An offended party may complain with the administration of the accused offender, in some cases without consequences, and in others with sanctions that can lead to dismissal. But the now convicted offender may simply take a new job as if nothing happened, the new employer being oblivious to what happened.

Economics does not have an ethics board that could deal with such cases beyond the current employer of an accused offender. There is now a proposal to create a committee dedicated to plagiarism. This committee would examine cases and vote on sanctions which may go all the way to publicly exposing the plagiarist. A group of volunteers have are discussed a simple set of procedures. Over the next month, the plan is to solicit comments from the public through this blog and call for further volunteers to participate in the committee. After that the committee would become active and deal with any new plagiarism cases that come to its attention. Please contact any current member to participate.

To view the current proposal and committee members, see a simple and bare bones site at The committee awaits your reaction. Beyond comments, you can also vote your reaction below.

The FRED Network, a social network for economists

June 12, 2010

Guest post by Richard Anderson

On June 3, 2010, the Research Division of the Federal Reserve Bank of St. Louis introduced the first Internet social networking web site for economics and business. The new web site <> is a namesake of the Bank’s popular FRED data service, the most widely used free source of United States economic data on the Internet.

The FRED Network will permit economists and the public to communicate more easily with the data analysts that support FRED, as well as with economists both at St. Louis and elsewhere in the world. The web site is a “dual-threaded” design, meaning each user can select both the topics of interest and the site’s users with whom they wish to communicate. Unlike unfiltered Internet blogs, users will not have to sort through commentary of little interest to locate useful information.

Social networking web sites help people find others with similar interests, exchange knowledge about both data and research projects, solve problems, and develop new ideas. Also, companies learn from their customers by reading customer comments.

“The FRED Network will improve communication between the Bank staff and our customers,” said one staff member. “In the past, we answered most questions via email and only one person saw the information. Now, we can answer within The FRED Network and all customers with that interest will see the information.”

Social networking brings together like-minded people, whether users of FRED data or top-level professionals pursuing complex research.

A unique feature of The FRED Network is the ability for each user to write their own blog. Each user’s blog is available to all other users who sign up to receive that user’s commentary. The unique design of The FRED Network allows each user to read blogs from selected users while excluding ones they do not care to read. This feature allows users who are passionate to write about their interests and expertise, while allowing users who do not wish to receive that commentary need not do so.

Is there an alphabetical bias in citations?

March 11, 2010

In Economics, there is a tradition to list multiple authors in alphabetical order, unless exceptional circumstances call for a different order. This implies that “alphaberically challenged” authors like me often get forgotten, either because they disappear in “et al.” or because they become also-rans. RePEc manages to correct for “et al.” in citations, but it is possible that because later co-authors get less name recognitions, they also get less cited when sole authors. Using data from authors registered in RePEc, here is are some simple statistics that could shed some light, or raise some new questions.

I split the over 23,000 author into 26 bins, one for each letter of the alphabet corresponding to the initial of their last name. First, see how the average number of distinct works authors have written for each of those bins. The graph below runs from A on the left to Z on the right. While this is not a straight line, it does not appear to be obviously trending up or down. The correlation is -0.27.

Distinct works per author, by author's initial A-Z

Now look at the number of citations per author. This time, if you blink a little, you can see a little downwards trend. The correlation is -0.45 and note also that the spread is much larger.

Citations per author, by author's initial A-Z

Now try again with citations per work. A downward trend is now more visible, and the correlation is -0.53, with a different of about one citation between start and end of alphabet. Note that these are just simple averages, without any control for anything else that could correlate with the alphabet and lead to lower citation counts. But it is not obvious what such a control could be. Conclusion? Is there a bias in citations against alphabetically challenged authors? Possibly, but it is not a large one.

Citations per work, by author's initial A-Z

RePEc and the democratization of research

December 9, 2008

In the last issue of the American Economic Review, the following article caught my eye: Restructuring Research: Communication Costs and the Democratization of University Innovation by Ajay Agrawal & Avi Goldfarb. In short, it documents who gained in electrical engineering faculties from the reduced cost of collaboration through the introduction of Bitnet, in the early Internet days. The basic result is that the middle-tier universities benefited the most. Indeed, the top ones were already well connected with each other, and the middle ones took advantage of collaborating with the top ones.

The main goal of RePEc is precisely the democratization of research. Given publication delays in Economics, if one wants to stay abreast of developments at the frontier of research, one needs to read working papers. Before the Internet, the only way to get hold of them was either if you were already at a top ranked Economics department, or if you were somehow within a club of well connected researchers. Just being aware of the most current research was a challenge for anybody outside these circles. This is what motivated Thomas Krichel, as a research assistant in 1991, to find ways to learn about new working papers, and share what he found. This initiative evolved into RePEc in 1997.

Are Elite Universities Losing Their Competitive Edge? by E. Han Kim, Adair Morse & Luigi Zingales documents that Economics faculty in elite universities where more productive at least in part due to their location in the 1970s, and that such a location effect has disappeared by the 1990s. While it is open whether RePEc has contributed to such democratization, we have always favored it: everybody should be able to learn about current research, and everybody should be able to contribute to it.

RePEc in June 2008

July 3, 2008

June was a surpisingly busy month, especially in terms of content expansion. We have now reached 600,000 works listed on RePEc, and it took only 10 months to add the last 100,000. Traffic was also heavy for the season, reaching 584,843 downloads and 2,803,705 abstract views.

The following institutions joined RePEc with an archive: World Scientific Publishing, Queens College (CUNY), GEFRA, Kobe University, Institut für Angewandte Wirtschaftsforschung (IAW), Université d’Auvergne, Universtät Freiburg, Società Italiana degli Economisti. Finally, here are the thresholds we reached this month:

140,000,000 cumulative abstract views
100,000,000 cumulative abstract views on IDEAS
45,000,000 cumulative abstract views for articles
600,000 listed works
350,000 articles listed
300,000 online articles listed
240,000 working papers listed
180,000 working paper abstracts
150,000 items with references
120,000 article abstracts
20,000 NEP reports

Where are the women?

June 19, 2008

Women have always been underrepresented in Economics. For example, regarding US faculty, the Committee on the Status of Women in the Economics Profession (CSWEP), a subcommittee of the American Economic Association, determines in its latest annual report that women represent 28% of assistant professors, 21% of associate professors and 8% of full professors in PhD granting Economics department. As a whole, they represent 19% of all Economics faculty.

The point of this post is not to complain about the low proportion of women in the profession, or about their dwindling share up the ladder, but about the lack of involvement on women in RePEc. Currently, their share is at 14.5%. It is clearly below the 19% mentioned, although it is slowly increasing (it was 13.6% a year ago and 12.7% two years ago). Why this underrepresentation?

It is of course possible that their a bias in those numbers, because the CSWEP numbers pertain only to the United States and the RePEc Author Service covers the whole world. So, let us analyze the top 1000 economists from Tom Coupé’s list. Of the men, only 22.9% are not registered taking the ranking by publications, and 32.4% with the ranking by citations (which includes quite a few non-economists). For women, the numbers are 37.2% and 44.4%. We see that top female economists are less likely to be signed up with RePEc.

Therefore, encourage women to register at the RePEc Author Service!

PS: You may wonder how these numbers are determined, as gender is not indicated when registering with the RePEc Author Service. It is inferred from first names, using a database of gender likelihood by name. For the more uncertain cases, an exception table was created using additional information, in particular from pictures on personal web pages.