For more information visit Eigenfactor.org
Impact factor measures the popularity of a journal.
Eignefactor measures the prestige of a journal. The Eignefactor takes information over 5 years and doesn't account for the journal size.
For a more in depth discussion see the Enago blog: Eigenfactor vs. Impact Factor: How are They Different?
The Eigenfactor can now be found here
Albert wrote an article "Constructions concerning the fundaments of theoretical physics" in the journal Science. Let's find out what the most current Eigenfactor is for Science.
The Eigenfactor for Albert's publication in Science is 1.15367 for the year 2015.