New CitEc features

September 24, 2012

In the past months we have added some new features to the Citations in Economics service:

References input service

Many documents in CitEc cannot be automatically processed due to a variety of reasons: they are not open access, not in PDF format or the PDF file can not be converted to text. Although some publishers provide us access to gated references, many are still missing. Often we get requests from authors asking why a citation to one of their papers is not included in CitEc. The answer is always the same: because the citing paper has not been processed. If this is your case, it is now possible to provide CitEc with the missing references and they will be processed. We ask, though, that all references from the citing paper be provided. Incomplete reference lists will not be considered. The lists of references and the contributor will be made public. The input form can be found here or from any IDEAS abstract page.

Add citation now

In some cases a paper cites a document available in RePEc but the system is not able to identify it as a RePEc item. For each reference not automatically linked by the system, the user may now add the handle of the cited document. All citations submitted through this feature are monitored to check if it is correct or not. A link to this form can be found from any IDEAS abstract page.

Citation profiles for authors

CitEc now provides citation profiles for authors. For each registered author in the RePEc Author Service, we provide a profile with her scientific production and the number of citations of each paper. Also we provide some indicators like the h-index and information about recent co-authors. For an example look at: http://citec.repec.org/p/z/pzi1.html. Note that this is work in progress, and the statistics on this page are not yet adjusted the way they are for the ranking statistics (versioning, self-citations).

New design for series pages

We have changed the format of the citations and production graphics. Also the papers bibliographic data is presented in a clearer way. An example at: http://citec.repec.org/s/2010/miewpaper.html

Included historical data for series pages

The time series for series citation data now goes back to 1990. Citations, document production and impact factor for all years is provided.

Use of persistent URLs

Now it is possible to access the citation data for authors and documents using short and persistent URLs like:, http://citec.repec.org/RePEc:mie:wpaper:382 or http://citec.repec.org/pdu7. To create such URLs simply add to http://citec.repec.org/ the paper/article handle or RePEc Author Service Short-ID.


RePEc in August 2012

September 3, 2012

RePEc went into a slumber for the last month. Quite little to report this time, except for heavy work in the background. The credentials for the accounts in the RePEc Author Service can now be used for authentication into various services, and NEP moved from SUNY Oswego to Penn State. See earlier blog posts about both events. Note also that NEP has now disseminated 200,000 working papers since its inception in 1998.

After adjustments for robots, reloads and other non-conformable traffic, we counted 441,838 file downloads and 1,714,916 abstract views from RePEc Services. Only four new archives joined RePEc: Socionet, Post Keynesian Economics Study Group, Academia Europea de Dirección y Economíe de la Empresa, and Birkbeck College (II). Finally, RePEc passed the following thresholds in the past month:

600,000 paper announcements though NEP (a paper may appear in several reports)
200,000 papers announced through NEP
3,500 working paper series


NEP now sponsored by Penn State

August 26, 2012

Since 2005 one of the main RePEc computers, the one handling New Economic Papers (NEP) has been housed at the State University of New York at Oswego. NEP handles the weekly email notifications of new working papers in about 90 field-specific reports. As part of its academic mission, SUNY Oswego kindly let the RePEc project place the machine on its network in one of its server rooms. While Bill Goffe was the local sponsor, the vast majority of the effort of running it fell to Thomas Krichel.

Bill has now taken a job with Penn State and this server hast just moved with him. Bill and the entire RePEc team would like to thank SUNY Oswego for its support over the last seven years and it looks forward to working the Information Technology in Liberal Arts group at Penn State for hosting this machine for the foreseeable future.


OpenID authentication through RePEc

August 21, 2012

It is now possible to use RePEc Author Service credentials to log into some other websites using the OpenID schema. This means that users do not need to use separate user names and passwords for those websites.

OpenID uses a user’s web page to establish credentials, as long as the website participates in OpenID. The RePEc Author Service now does so, with the drawback that few users know their profile URL (for example: http://authors.repec.org/pro/pzi1/). For this reason, services using OpenID credentials through RePEc will typically request the user’s RePEc short-ID (for example: pzi1). The latter can be found on an author’s profile on EconPapers or IDEAS, or by using a RePEc short-ID lookup tool.

A typical authentication procedure goes as follows:

  1. The user is asked for a personal RePEc short-ID at a referring service.
  2. The service forwards this information to the RePEc Author Service, which shows the habitual log-in page.
  3. The user enters the usual RePEc Author Service credentials (email address and password).
  4. Upon success, the RePEc Author Service asks for confirmation that log-in should proceed at the referring service.
  5. Upon confirmation, the referring service obtains confirmation from the RePEc Author Service that this is the person with this short-ID.

Steps 2 and 5 are bypassed if the user has a live RePEc Author Service session. It should be noted that the RePEc Author Service does not communicate the email address or the password, only that the owner of the short-ID (and its corresponding web page) is indeed this person. The referring service is then free to use the short-ID in its own authentication.

Note that some people will not be able to use this authentication service right away. Indeed, their RePEc Author Service profile needs to be enabled for this. This is not the case for anybody who has not logged in the RePEc Author Service since late June 2012.

OpenID authentication through RePEc is currently in use for the maintenance of reading lists and publication compilations on IDEAS, as well as for the RePEc plagiarism committee. Other services that require authentication, tied to RePEc or not, will soon follow.


RePEc in July 2012

August 3, 2012

One project that makes particular strides lately is CitEc, our citation analysis initiative. Thanks to the collaboration of several publishers, references from articles are now being added at a substantial pace, and the citation coverage is now becoming more respectable. There is a lot of material in the pipeline, and we hope that other commercial publishers will join in this effort. Also, NEP is moving to a new location and will be off-line a few days. This blog will report on both over the coming weeks.

We counted 504,492 file downloads and 1,823,518 abstract views in July 2012, as always contingent to the pruning performed by the LogEc project. Our new participating archives for the month of July: Ottawa United Learning Academy, Nottingham Trent University (II), University of Central Florida, Europa Grande, Universidade de Santiago de Compostela (II), Vistula University, Universidad de Montevideo, University of Antwerp (II), Mathematica Policy Research, Singapore Management University, Lahore School of Economics, Universidad de Oviedo.

And finally a few thresholds we recently passed:
100000000 article abstract views
12000000 cumulative downloads through EconPapers
1100000 items available online
800000 items with abstracts
750000 links to research in registered author profiles
400000 articles with abstracts
333333 JEL coded items


When an email address goes bad

July 25, 2012

Authors register with the RePEc Author Service using their email address, which serves as a user name. That email address is also used by the service to alert them about new potential works to add to their profile and to send them monthly statistics. Occasionally, some of these emails bounce back to the service: the mailbox is full, or the address has become obsolete. What happens now?

First, EconPapers and IDEAS add a mention to the author profile page encouraging users to supply a new email address to the RePEc Author Service. IDEAS also publishes the complete list of lost authors.

Second, lost authors are considered without affiliation for ranking purposes. Indeed, a major reason why an email address goes bad is that the author has moved, in which case the affiliation is likely obsolete. Another reason may be that the author has died, in which case having an affiliation make no sense.

Third, once the email address has remained bad for a second month, the administrator of the RePEc Author Service goes fishing for a better one. This involves Internet searches, asking co-authors and former colleagues. This is repeated later if necessary.

These efforts have allowed to keep the number of lost authors remarkably low: currently 273, or 0.8% of all registered authors. To this, add 152 authors who are known to be deceased. The records of the latter continue to be maintained by volunteers, as research may still be added posthumously, or new archives may still join with works written by these scholars.

We appreciate any help in tracing lost authors, notifications about deceased authors and support in maintaining their profiles. Simply email the administrator of the RePEc Author Service.


Rules for email addresses in RePEc

July 12, 2012

Many people trust RePEc with their email address. RePEc earned this trust, we believe, by not abusing the use of these email addresses. This has been so far an implicit commitment, as no policy was established. This post now puts in words the practice since the inception of RePEc in 1997, and establishes a few additional rules.

Covered email addresses

These rules cover all email addresses that are collected and used by RePEc and its services. These addresses include those contained in metadata from RePEc archives, from author profiles in the RePEc Author Service, and subscriptions to the various NEP mailing lists.

Display of email addresses

RePEc services, if they choose to display email addresses, commit to always encrypt any public email address to prevent harvesting by robots.

Authors registered with the RePEc Author Service have the option to have their email address not displayed. The option is available as a checkbox on the “contact information” page at the RePEc Author Service. In such a case, the RePEc Author Service does not include the address in the metadata disseminated to other RePEc services.

NEP does not display any email address. Only the list maintainer (the NEP editor) has access to subscription details.

Use of email addresses

RePEc archive and series maintainers receive one monthly email from RePEc with statistics, reminders and links pertaining to their material. They may receive additional messages if a problem arises with their archive or metadata.

RePEc authors also receive a monthly email with statistics, latest citations, and news. It is possible to opt out of the monthly messages by replying to the sender. The RePEc Author Service may also send messages if it suspects an author may have some new works waiting to be claimed.

Email addresses are used as user names in the RePEc Author Service. If a RePEc service requires authentication through the RePEc Author Service, it cannot store this email address unless it is explicitly stated. The authentication form must have a link to a list of authorized services. This list is on the RePEc Author Service site.

NEP subscribers are to receive only messages pertaining to their NEP report, plus rare housekeeping messages. This policy may be amended to also include professional messages, like calls for papers, if relevant to the specific field.

None of the gathered email addresses is to be given, for a fee or not, to any third party. A yearly survey, though, may be conducted on questions relevant to the profession and/or RePEc (one call plus one reminder).

Accuracy of email contacts

It is the responsibility of archive and series maintainers to keep contact information current. This is done by maintaining appropriate coordinates in the archive and series templates of their RePEc archive (files ___arch.rdf and ___seri.rdf). Email addresses are required.

Authors and NEP subscribers are asked to maintain current coordinates so as to reduce the workload of RePEc volunteers. The latter may change an person’s email address in the RePEc Author Service or a NEP mailing lists if it appears to be obsolete.


RePEc in June 2012

July 3, 2012

First off: RePEc is now 15 years old. It was launched at a meeting in Guildford (UK) where Thomas Krichel exposed his idea to a group of people who were already doing some indexing of working papers. Soon thereafter, they started providing the relevant bibliographic metadata in the relevant format and RePEc services could use them. Thomas Krichel had previously been running various initiatives to improve the dissemination of working papers, all the way back to 1991.

Speaking of volunteer personnel, Kyle Fluegge stepped down as NEP editor. His successor is Laura Stefanescu, who is now in charge of creating the weekly list of new working papers submitted to NEP editors, who can then select those relevant to their field.

During June 2012, we counted 520,118 file downloads and 2,010,606 abstract views. We also welcomed the following new participating archives: : HERMIN, Società editrice il Mulino, Catalactica NGO, Bangor University, Missouri Valley Economic Association, Université Bordeaux 4, University of New South Wales (III), Japan Ministry of Finance, Rockwool Foundation, University of South Bohemia, Babes-Bolyai University.

Finally, the following thresholds were reached during the past month:
400000 working papers available online
100000 articles with references
15000 book chapters available online
1500 indexed journals
500 blogs linked on EconAcademics.org with discussions about RePEc material


Linking with social media and page translation

June 26, 2012

We have noticed that material on RePEc is used quite heavily on social media, in particular Facebook, Twitter and Delicious. To make it easier, IDEAS now features on every page buttons that allow a user to quickly link with some services. Currently, the following options are available: Facebook, Twitter, Delicious, StumbleUpon, Google+ and Reddit. In addition, there is a button to print and one to email the link.

The code for all this was custom written to avoid using tracking cookies that are common with similar referral services. One consequence is that the email button will only work if an email client is installed on the computer. It will not work with Gmail, Hotmail, and other web-based email services.

In addition, Google Translate has been implemented as well, which should be able to translate any page you your language of choice, even when several languages are present. Of course, only the original version is guaranteed to be accurate. Note that this service uses a tracking cookie, but virtually everyone already has a Google cookie anyway.

EconPapers will soon implement the same features.


RePEc in May 2012

June 4, 2012

We counted in the past month 620,959 file downloads and 2,338,668 abstract views. RePEc has also grown to include now over 1.2 million items. This growth comes in part from the following newly participating archives: Lucius & Lucius Verlag, BI Norwegian Business School, Superintendencia de Pensiones de Chile, Rivista Bancaria, Harvard University (II), University of Tokyo (II), Universidade Técnica de Lisboa, Université de Liège, Flinders University, Economics for Energy, Central European University, Hellenic Association of Regional Scientists, Southern Regional Science Association.

And last month, we passed the following thresholds:
200000000 cumulative abstract views on IDEAS
8000000 references extracted
1200000 research items listed on RePEc
400000 items with citations
100000 articles with JEL codes
5000 identified links from blog posts to research items on RePEc
2000 links from Wikipedia to research items on RePEc