[Sigmetrics] Identification of long-term concept-symbols among citations

T V Gopal gopal at annauniv.edu
Tue Jan 5 05:51:30 EST 2016

Dear Prof. Loet Leydesdorff,

Thank you for an interesting paper.

At times, the seminal work may be in a seemingly unrelated domain. How is
it reflected / factored in your paper ?

Gopal T V
0 9840121302
Dr. T V Gopal
Department of Computer Science and Engineering
College of Engineering
Anna University
Chennai - 600 025, INDIA
Ph : (Off) 22351723 Extn. 3340
      (Res) 24454753
Home Page : http://www.annauniv.edu/staff/gopal

On Tue, January 5, 2016 11:37 am, Loet Leydesdorff wrote:

Identification of long-term concept-symbols among citations:
Can documents be clustered in terms of common intellectual histories?

Jordan A. Comins and Loet Leydesdorff

"Citation classics" are not only highly cited, but also cited during
decades. We test whether the peaks in the spectrograms generated by
Reference Publication Years Spectroscopy (RPYS) indicate such long-term
impact by comparing across RPYS for subsequent time intervals. Multi-RPYS
enables us to distinguish between short-term citation peaks at the
front that decay within ten years versus historically constitutive
(long-term) citations that function as concept symbols (Small, 1978).
these constitutive citations, one is able to cluster document sets (e.g.,
journals) in terms of intellectually shared histories. We test this
by clustering 40 journals in the Web of Science Category of Information
Library Science using multi-RPYS. It follows that RPYS can not only be
for retrieving roots of sets under study (cited), but also for algorithmic
historiography of the citing sets. Significant references are historically
rooted symbols among other citations that function as currency.

Preprint available at http://arxiv.org/abs/1601.00288

* Apologies for cross-postings


Loet Leydesdorff

Professor, University of Amsterdam
Amsterdam School of Communication Research (ASCoR)

 <mailto:loet at leydesdorff.net> loet at leydesdorff.net ;
<http://www.leydesdorff.net/> http://www.leydesdorff.net/
Honorary Professor,  <http://www.sussex.ac.uk/spru/> SPRU, University of

Guest Professor  <http://www.zju.edu.cn/english/> Zhejiang Univ.,
Visiting Professor,  <http://www.istic.ac.cn/Eng/brief_en.html> ISTIC,

Visiting Professor,  <http://www.bbk.ac.uk/> Birkbeck, University of


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