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Related Experiment Video

Updated: May 11, 2026

Global and Current Research Trends of Single-Cell Sequencing in Cancer: A Bibliometric and Visualization Study

Global and Current Research Trends of Single-Cell Sequencing in Cancer: A Bibliometric and Visualization Study

Published on: April 18, 2025

Determining scientific impact using a collaboration index.

Jonathan Stallings¹, Eric Vance, Jiansheng Yang

¹Department of Statistics, Virginia Polytechnic Institute and State University, Blacksburg, VA 24061, USA.

Proceedings of the National Academy of Sciences of the United States of America

|May 31, 2013

Summary

Introducing the A-index, a new metric for evaluating scientific impact. This axiomatic approach fairly assesses researchers by weighting publications based on individual contributions, offering a better alternative to traditional metrics like the H-index.

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Comparing Bibliometric Analysis Using PubMed, Scopus, and Web of Science Databases

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Comparing Bibliometric Analysis Using PubMed, Scopus, and Web of Science Databases

Comparing Bibliometric Analysis Using PubMed, Scopus, and Web of Science Databases

Published on: October 24, 2019

Area of Science:

Bibliometrics
Scientometrics
Research Evaluation

Background:

Scientific collaboration is crucial, but publication metrics like total publications and H-index do not account for unequal coauthor contributions.
Existing metrics fail to accurately reflect individual scientific impact in collaborative research environments.

Purpose of the Study:

To introduce and validate a novel axiomatic approach, the A-index, for a more equitable evaluation of researcher impact.
To develop weighted metrics (C-index for collaboration, P-index for productivity) based on the A-index.

Main Methods:

An axiomatic approach was used to develop the A-index for assigning relative credit to coauthors.
The A-index was applied to calculate weighted publication (C-index) and impact factor (P-index) sums.
Bibliometric data from 186 biomedical engineering faculty were analyzed, alongside extensive simulations.

Main Results:

The axiomatically weighted C- and P-indexes provide a more accurate assessment of scientific caliber compared to the total number of publications and the H-index.
These new indexes better capture the nuances of individual contributions in collaborative research.

Conclusions:

The A-index offers a fairer and sharper evaluation of researchers, particularly those with diverse collaborative behaviors.
This axiomatic weighting system enhances the precision of scientific impact assessment in academic settings.