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Book part
Publication date: 20 January 2005

Abstract

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Power Laws in the Information Production Process: Lotkaian Informetrics
Type: Book
ISBN: 978-0-12088-753-8

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Article
Publication date: 1 April 1987

RONALD ROUSSEAU

A new definition of the nuclear zone of a Bradford or Leimkuhler curve is proposed. A p‐nucleus is defined within which the gradient of the curve is less than the proportion p of…

40

Abstract

A new definition of the nuclear zone of a Bradford or Leimkuhler curve is proposed. A p‐nucleus is defined within which the gradient of the curve is less than the proportion p of its maximum value. This definition is invariant of scale and so is widely applicable. Using Egghe's fitting method it is shown how one can find a p‐nucleus for data which may deviate from a strict Bradford‐Leimkuhler curve (e.g. having a Groos droop or being heavily truncated). A p‐nucleus is proposed for practical applications.

Details

Journal of Documentation, vol. 43 no. 4
Type: Research Article
ISSN: 0022-0418

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Article
Publication date: 10 May 2013

L. Egghe and Lutz Bornmann

The authors exploit the analogy between journal peer review and information retrieval in order to quantify some imperfections of journal peer review.

443

Abstract

Purpose

The authors exploit the analogy between journal peer review and information retrieval in order to quantify some imperfections of journal peer review.

Design/methodology/approach

The authors define fallout rate and missing rate in order to describe quantitatively the weak papers that were accepted and the strong papers that were missed, respectively. To assess the quality of manuscripts the authors use bibliometric measures.

Findings

Fallout rate and missing rate are put in relation with the hitting rate and success rate. Conclusions are drawn on what fraction of weak papers will be accepted in order to have a certain fraction of strong accepted papers.

Originality/value

The paper illustrates that these curves are new in peer review research when interpreted in the information retrieval terminology.

Details

Journal of Documentation, vol. 69 no. 3
Type: Research Article
ISSN: 0022-0418

Keywords

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Article
Publication date: 1 January 1988

L. EGGHE

It is well known that the laws of Leimkuhler, Mandelbrot, Lotka and the verbal formulation of Bradford's law are equivalent. In this note we prove an analogous framework of laws…

902

Abstract

It is well known that the laws of Leimkuhler, Mandelbrot, Lotka and the verbal formulation of Bradford's law are equivalent. In this note we prove an analogous framework of laws in which now the law of Zipf occurs instead of Mandelbrot's law. Laws in this group are Brookes' law and the graphical formulation of Bradford's law. We show that both groups of laws are very different in the sense that they are not even equal asymptotically for high rankings.

Details

Journal of Documentation, vol. 44 no. 1
Type: Research Article
ISSN: 0022-0418

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Article
Publication date: 1 March 1985

L. EGGHE

In this paper we start from the well‐known fact that from the law of Lotka

130

Abstract

In this paper we start from the well‐known fact that from the law of Lotka

Details

Journal of Documentation, vol. 41 no. 3
Type: Research Article
ISSN: 0022-0418

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Article
Publication date: 5 January 2018

Tehmina Amjad, Ali Daud and Naif Radi Aljohani

This study reviews the methods found in the literature for the ranking of authors, identifies the pros and cons of these methods, discusses and compares these methods. The purpose…

1463

Abstract

Purpose

This study reviews the methods found in the literature for the ranking of authors, identifies the pros and cons of these methods, discusses and compares these methods. The purpose of this paper is to study is to find the challenges and future directions of ranking of academic objects, especially authors, for future researchers.

Design/methodology/approach

This study reviews the methods found in the literature for the ranking of authors, classifies them into subcategories by studying and analyzing their way of achieving the objectives, discusses and compares them. The data sets used in the literature and the evaluation measures applicable in the domain are also presented.

Findings

The survey identifies the challenges involved in the field of ranking of authors and future directions.

Originality/value

To the best of the knowledge, this is the first survey that studies the author ranking problem in detail and classifies them according to their key functionalities, features and way of achieving the objective according to the requirement of the problem.

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Article
Publication date: 3 April 2018

Rongying Zhao and Xuqiu Wei

Collaboration is an important way for scientific research. It attracts a large number of researchers, and forms a series of measurement evaluation indicators. The purpose of this…

444

Abstract

Purpose

Collaboration is an important way for scientific research. It attracts a large number of researchers, and forms a series of measurement evaluation indicators. The purpose of this study further enriches the evaluation system of collaboration and provides new indicators to measure collaboration ability at author level in order to identify the most appropriate potential partners.

Design/methodology/approach

The papers published during the period 2006-2015 and collected from Web of Science Core Collection in library and information science (LIS) are regarded as data source. And it defines and measures the collaborative rate, collaborative breadth and collaborative depth at author level.

Findings

The authors’ research shows that collaboration is an important way in the scientific research activities in LIS. Unfortunately, most author’s collaborative breadth and the collaborative depth are lower than mean. Therefore, the author’s scope and stability of collaboration is further strengthened in future. Authors can identify the most appropriate potential partners according to author’s research purpose and the region of the collaborative breadth – the collaborative depth.

Originality/value

It further enriches the evaluation system of collaboration and provides new indicators to evaluate collaboration ability at author level. Authors can identify the most appropriate potential partners according to author’s collaboration ability.

Details

The Electronic Library, vol. 36 no. 2
Type: Research Article
ISSN: 0264-0473

Keywords

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Book part
Publication date: 20 January 2005

Leo Egghe

Abstract

Details

Power Laws in the Information Production Process: Lotkaian Informetrics
Type: Book
ISBN: 978-0-12088-753-8

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Book part
Publication date: 20 January 2005

Leo Egghe

Abstract

Details

Power Laws in the Information Production Process: Lotkaian Informetrics
Type: Book
ISBN: 978-0-12088-753-8

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Article
Publication date: 7 September 2010

Michael Norris and Charles Oppenheim

This review aims to show, broadly, how the h‐index has become a subject of widespread debate, how it has spawned many variants and diverse applications since first introduced in…

2228

Abstract

Purpose

This review aims to show, broadly, how the h‐index has become a subject of widespread debate, how it has spawned many variants and diverse applications since first introduced in 2005 and some of the issues in its use.

Design/methodology/approach

The review drew on a range of material published in 1990 or so sources published since 2005. From these sources, a number of themes were identified and discussed ranging from the h‐index's advantages to which citation database might be selected for its calculation.

Findings

The analysis shows how the h‐index has quickly established itself as a major subject of interest in the field of bibliometrics. Study of the index ranges from its mathematical underpinning to a range of variants perceived to address the indexes' shortcomings. The review illustrates how widely the index has been applied but also how care must be taken in its application.

Originality/value

The use of bibliometric indicators to measure research performance continues, with the h‐index as its latest addition. The use of the h‐index, its variants and many applications to which it has been put are still at the exploratory stage. The review shows the breadth and diversity of this research and the need to verify the veracity of the h‐index by more studies.

Details

Journal of Documentation, vol. 66 no. 5
Type: Research Article
ISSN: 0022-0418

Keywords

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