My last post was on ISI’s journal citation reports, but there are other ranking calculations as well. Along with straight citation counts, Eigenfactor brings in number of articles published, disciplinary citation patterns, and references from non-journal sources, . As the site explains it, the Eigenfactor score is a “measure of the journal’s total importance to the scientific community.” “A journal’s Article Influence score is a measure of the average influence of each of its articles over the first five years after publication.”

The scores can be searched by journal title and ISI subject category.

In Political Science, the journals with the top Eigenfactor are:

1. American Journal of Political Science
2. American Political Science Review
3. Journal of Politics

When ranked by Article Influence, Political Analysis goes to the top.

In International Relations, the Eigenfactor ranking is:

1. International Organization
2. Journal of Conflict Resolution
3. Foreign Affairs

The Eigenfactor Project also has a cost-effectiveness score that assesses journals’ Eigenfactor and Article Influence scores in relation to subscription costs.

A free site, the Eigenfactor Project also includes further background information and an interactive mapping tool that tracks citations across disciplines.