Adapted from EdgeRank is Dead on Marketing Land.
Thought you knew everything about EdgeRank and how Facebook decides to populate your news feed? Well, it’s time for an update.
Facebook began employing a more complex ranking algorithm based on machine learning. It turns out that the new ranking scheme has as many as “100,000 individual weights in the model that produces News Feed.” The three original EdgeRank elements — Affinity, Weight and Time Decay — are still important but as are other new “things.”
In other words, the News Feed algorithm of today is much more sophisticated than just a couple years ago.