Classification A1 / P1: definition and distinction

Definition A1

Articles included in one of the ISI Web of Science databases 'Science Citation Index', 'Social Science Citation Index' or 'Arts and Humanities Citation Index'. Limited to the publications document type: article, review, letter, note, proceedings paper.

Definition P1

Proceedings included in one of these ISI Web of Science indexes: 'Conference Proceedings Citation Index - Science' of 'Conference Proceedings Citation Index - Social Science and Humanities'. Limited to publications document type: article, review, letter, note, proceedings paper, with exception of publications classified A1.

Distinction A1 / P1

There's an overlap between the classifications A1 and P1. A1 has priority over P1. If a proceedings paper is found in the Science Citations Index as well as in the Conference Proceedings Citation Index - Science, then the former has priority and the classification is A1. However, if the proceedings paper is only found in the latter, then the paper is classified P1.

This image shows how to detect the difference:

A1-P1 onderscheid

Is this article an A1 publication?

There are several ways to determine whether or not an article is an A1 publication. The first is to go through the Journal Citation Reports:

  • Look up the journal title in the search bar. Make sure to type slowly, so the website can keep up.

If the journal appears in this list and has an impact factor, it is an A1 journal. If it does not appear in this list, it is not an A1 journal.

Another way is to look for the article in the WoS database. Not all the articles in the WoS database are A1 publications, however. Follow the steps below to search for A1 publications only.

  • Open a browser in Athena.
  • Go to the library catalogue > Databases > Web of Science
  • Click on "More Settings" and check only the first three databases:
    • Science Citation Index Expanded (SCI-EXPANDED)
    • Social Sciences Citation Index (SSCI)
    • Arts and Humanities Citation Index (A&HCI)

If you can find the article, it is an A1 article. If it does not appear in the search results, it is not an A1 article.

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Last modified Aug. 8, 2019, 11:16 a.m.