July 16, 2014
A major part of the scientific process is the replication of previous studies, something necessary to confirm that things were done right, that they are not sensitive to details and that results have not changed with the passage of time, either because the methods got better or the data has evolved. Unfortunately, there is little replication in economics, and if there is some, it is difficult to publish it. One can theorize why this may be the case, but it is clear replication studies are little valued and not particularly welcome in journals. It is also quite difficult to determine whether a particular study has been replicated.
To help with all that, the Center for Statistics at the University of Göttingen (Germany) has launched a Wiki to index replicated and replicating studies in economics, with funding from the Institute for New Economic Thinking. As it is a wiki, it is crowd-sourced in the sense that any registered person can amend the records, and in particular add replication studies. One can also add to a list of articles published in top journals that should warrant replication and vote (anonymously) from that list (current winners).
The listings on this Replication Wiki are now indexed on IDEAS as well. The principle is similar to the indexation of Wikipedia articles: if a study on the Wiki has a link to IDEAS (or EconPapers, IDEAS will link back. Those adding or amending entries on the Wiki are thus encouraged to link to the IDEAS abstract page to create the backlink on IDEAS.
As any crowd-sourced project, the Replication Wiki will only live from the participation from the public. If you know of replication studies, consider spending a few minutes and add to this wiki.
July 4, 2014
We got a good crop of new participating archives this month: Italian Association for the Study of Economic Asymmetries, National Association of Romanian Valuers, Association of Private Enterprise Education, Universidad Nacional Autónoma de México, VU University Amsterdam, Centre for Macroeconomics (London), Small Arms Data Observatory, Şcoala Naţională de Studii Politice şi Administrative, Journal of Studies in Dynamics and Change, Institut National de la Recherche Agronomique (INRA).
Traffic was rather low this month, though: 416,168 file downloads and 1,728,798 abstract views. This was in part due to a larger than usual share of raw traffic we had to eliminate because it looked suspicious. Unfortunately, these checks take longer and longer because we see more and more creative and puzzling things in our logs.
And we reached the following thresholds:
125000000 cumulative article abstract views
900000 listed articles are available online
500000 listed papers are available online
10000 utils used in transactions in the fantasy league market
July 1, 2014
With the next RePEc rankings and statistics to be released in a few days, a couple of small changes will be implemented.
First, we have adjusted the way the recursive and discounted recursive impact factors were used for weighting article pages, documents, and citations. A scaling factor was previously applied twice instead of once. The correction does not affect the rankings in any way, but it allows authors to replicate their scores. New scores are 21.4 times higher.
Second, we have started preventing republished articles from counting in the impact factors of the republishing journal. Also, these articles are dropped from the list of top recent works.
June 17, 2014
The Research Division of the Federal Reserve Bank of St. Louis is hosting a conference on the challenges of economic information and data. The event will take place September 29 and 30, 2014, and will feature Hal Varian (Chief economist, Google) and Neil Fantom (Open Data manager, the World Bank). Submissions are invited until July 9, 2014. The conference’s website is here
June 3, 2014
What was new in RePEc in May? We announced significant enhancements to the series and author pages on CitEc, our citation extraction project. Also, we have just added a ranking of European economics departments. We have also welcomed the following new RePEc archives: Alma Mater University of Sibiu, University of Warsaw, Asia Pacific Institute of Research, University of West Virginia (II), Instytut Badañ Gospodarczych, Közgazdasági Szemle Alapítvány, Principled Societies Project, University of Rijeka, Maryland Institute of Research, Universidade de Vigo (II), French Association of Environmental and Resource Economists. We counted 549,441 file downloads and 2,350,152 abstract views.
Finally, we reached these thresholds:
5000000 cumulative software item abstract views
600000 cited documents
300000 working papers with extracted references
750 NEP reports dispatched to field editors
May 5, 2014
A major threshold was reached a few days ago with 40,000 authors registered on the RePEc Author Service (not counting over 10,000 non-authors). For comparison, the membership of the American Economic Association, the largest society of economists, is about 13,000.
We have welcomed the following new particpating archives in RePEc: Council for Budget Responsibility, Università di Roma Sapienza (II), WISE, Indiana State University, Canon Institute for Global Studies, Pepperdine University, Macrothink Institute, Credit and Capital Markets, Asian Development Bank, German Institute for Japanese Studies, Universitat de Barcelona (II), Analítika. We also counted 593,545 file downloads and 2,794,821 abstract views, only for the RePEc services that deliver such statistics.
This brings us to the various thresholds we reached over the last month:
60000000 cumulative abstract views on EconPapers
1400000 listed documents available online
40000 registered authors
1000 economists put on auction in the RePEc fantasy league.
April 4, 2014
After a record crop, the last month was unusually calm in terms of new RePEc archives: Corvinus University Budapest, Università Bocconi, African Finance and Economic Association, and Chiang Mai University. We counted 616,841 file downloads and 2,692,082 abstract views. While these numbers are on the high side, this did not bring us any particular threshold, except that we reached 50000 registered people (not all of them authors) in the RePEc Author Service. That is it for a very short post this month.
March 26, 2014
Likely the most frequent request RePEc is getting is an author who wants us to add some publications to the database and wonders why our “spider” has not picked them up. The second most frequent is a publisher wondering why RePEc is neglecting to disseminate its output. The problem is that this is not at all the way RePEc functions. This short post provides the basics of how the metadata (the data describing the research documents) gets into RePEc.
The principle is that metadata comes directly from the providers. By providers we mean commercial publishers for their books and journals, or university departments for their working papers, or research centers for their papers, or policy institutions for their various publications. Thus, RePEc does not have a spider that surfs the entire Internet and tries to infer what it is that it stumbles upon. Rather, RePEc knows exactly where to look for the information that has been formatted in a way to optimize its usefulness. And if an author finds some publications are missing, it is either because the provider is not (yet) participating in RePEc, in which case it can follow these instructions, or because the provider has incomplete data, in which case a technical contact is listed on the RePEc page of the relevant journal or series and can help.
Desperate authors can also upload their works at the Munich Personal RePEc Archive, sponsored by the Library of the University of Munich, as long as they have the rights to do so (check here).
Why is RePEc data collection organized in such a way? We want RePEc to be free for all, so it needs to be set up in a way that does not generate costs. Thus, we put the burden of indexing on those who benefit the most from it, the providers. And close to 1700 are willing to do so. Any remaining central duties are picked up by the RePEc team.
March 3, 2014
Despite of this being the shortest month on record (with a few ties), we have a new record to announce: 19 new archives have joined RePEc: World Economics Association, FERDI, Bucharest Academy of Economic Studies (VIII), Eindhoven University of Technology, Universitat de Barcelona (III), Colorado School of Mines, GECONTEC, Societatea de Stiinte Juridice si Administrative, Universidad Privada Boliviana, FESSUD, Istanbul Bilgi University, Lodz University Press, Vysoka skola podnikani, Institute of Microfinance, Borsa Istanbul, Peruvian Economic Association, Bucharest Academy of Economic Studies (VII), US Congressional Budget Office, and Revista Mexicana de Economía y Finanzas. We also recorded 541,472 file downloads and 2,258,325 abstract views from reporting RePEc services.
In terms of thresholds, we have:
175000000 cumulative paper abstract views
120000000 cumulative article abstract views
3000000 cumulative book abstract views
10000 links from blog posts listed on EconAcademics.org
February 20, 2014
RePEc offers various tools to keep abreast of latest research developments in economics. Keep in mind that due to the unusually long refereeing and publication process in this field, following what is coming out in journals is often not the best way to keep current. The research frontier is advancing with working papers, and this is why RePEc puts a special focus on those. Note that all resources below are free, as always for RePEc services.
NEP (New Economics Papers) offers email lists and RSS feeds that disseminate approximately every week the latest online working papers across over 90 fields. Field-relevance is determined by volunteer editors who pick the appropriate papers among all working papers newly listed on RePEc during the previous week. Note that if you think a topic is not appropriately covered, you can volunteer as editor of a new report.
MyIDEAS allows you to follow new additions to JEL codes, author profiles, series and journals. This is done through the creation of an account on the IDEAS website. Once logged in, you can add the relevant items while navigating the site.
EconPapers allows to limit the search results to documents added recently to RePEc. Use the “Modified last” selection at the bottom left of the search form. One can also limit the list of items by JEL code and recency here.
Similarly, IDEAS allows to restrict search results to specific years. When looking up by JEL code, items are sorted with the most recent first.
EconAcademics follows the latest discussion of research on the blogosphere. While it does not necessarily mean this is the most recent research, it is often the case.