Why PeopleRank is Intrinsically Flawed

January 27, 2011 § 3 Comments

By: Xianhang Zhang

The Quora team talks a lot about experts & the power of expertise, and one of Quora’s explicit goals is to attract and retain more experts, empowering them to contribute high quality content on the site. At the heart of this initiative is the shiny new “PeopleRank” system supposedly in the works to algorithmically determine the precise degree of expertise each person contains. I’m here to argue that such an approach is fundamentally flawed in that, no matter how good the algorithm may be, it will not produce the desired results of attracting experts because its processing of garbage input can only product garbage output. « Read the rest of this entry »