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  • Author: Ronald Rousseau x
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Delayed recognition: recent developments and a proposal to study this phenomenon as a fuzzy concept

Abstract

Purpose

New developments in the study of delayed recognition are discussed.

Design/methodology/approach

Based on these new developments a method is proposed to characterize delayed recognition as a fuzzy concept.

Findings

A benchmark value of 0.333 corresponding with linear growth is obtained. Moreover, a case is discovered in which an expert found delayed recognition several years before citation analysis could discover this phenomenon.

Research limitations

As all citation studies also this one is database dependent.

Practical implications

Delayed recognition is turned into a fuzzy concept.

Originality/value

The article presents a new way of studying delayed recognition.

Open access
The F-measure for Research Priority

Abstract

Purpose

In this contribution we continue our investigations related to the activity index (AI) and its formal analogs. We try to replace the AI by an indicator which is better suited for policy applications.

Design/methodology/approach

We point out that fluctuations in the value of the AI for a given country and domain are never the result of that country’s policy with respect to that domain alone because there are exogenous factors at play. For this reason we introduce the F-measure. This F-measure is nothing but the harmonic mean of the country’s share in the world’s publication output in the given domain and the given domain’s share in the country’s publication output.

Findings

The F-measure does not suffer from the problems the AI does.

Research limitations

The indicator is not yet fully tested in real cases.

R&D policy management

In policy considerations, the AI should better be replaced by the F-measure as this measure can better show the results of science policy measures (which the AI cannot as it depends on exogenous factors).

Originality/value

We provide an original solution for a problem that is not fully realized by policy makers.

Open access
Equalities between h-type Indices and Definitions of Rational h-type Indicators

Abstract

Purpose

To show for which publication-citation arrays h-type indices are equal and to reconsider rational h-type indices. Results for these research questions fill some gaps in existing basic knowledge about h-type indices.

Design/methodology/approach

The results and introduction of new indicators are based on well-known definitions.

Findings

The research purpose has been reached: answers to the first questions are obtained and new indicators are defined.

Research limitations

h-type indices do not meet the Bouyssou-Marchant independence requirement.

Practical implications

On the one hand, more insight has been obtained for well-known indices such as the h- and the g-index and on the other hand, simple extensions of existing indicators have been added to the bibliometric toolbox. Relative rational h-type indices are more useful for individuals than the existing absolute ones.

Originality/value

Answers to basic questions such as “when are the values of two h-type indices equal” are provided. A new rational h-index is introduced.

Open access
Gauging a Firm’s Innovative Performance Using an Integrated Structural Index for Patents

Abstract

Purpose

In this contribution we try to find new indicators to measure characteristics of a firm’s patents and their influence on a company’s profits.

Design/methodology/approach

We realize that patent evaluation and influence on a company’s profits is a complicated issue requiring different perspectives. For this reason we design two types of structural h-indices, derived from the International Patent Classification (IPC). In a case study we apply not only basic statistics but also a nested case-control methodology.

Findings

The resulting indicator values based on a large dataset (19,080 patents in total) from the pharmaceutical industry show that the new structural indices are significantly correlated with a firm’s profits.

Research limitations

The new structural index and the synthetic structural index have just been applied in one case study in the pharmaceutical industry.

Practical implications

Our study suggests useful implications for patentometric studies and leads to suggestions for different sized firms to include a healthy research and development (R&D) policy management. The structural h-index can be used to gauge the profits resulting from the innovative performance of a firm’s patent portfolio.

Originality/value

Traditionally, the breadth and depth of patents of a firm and their citations are considered separately. This approach, however, does not provide an integrated insight in the major characteristics of a firm’s patents. The Sh(Y) index, proposed in our investigation, can reflect a firm’s innovation activities, its technological breadth, and its influence in an integrated way.

Open access