Title
Learning sparse mixtures of rankings from noisy information.
Abstract
We study the problem of learning an unknown mixture of $k$ rankings over $n$ elements, given access to noisy samples drawn from the unknown mixture. We consider a range of different noise models, including natural variants of the heat kernel noise framework and the Mallows model. For each of these noise models we give an algorithm which, under mild assumptions, learns the unknown mixture to high accuracy and runs in $n^{O(log k)}$ time. The best previous algorithms for closely related problems have running times which are exponential in $k$.
Year
Venue
DocType
2018
arXiv: Learning
Journal
Volume
Citations 
PageRank 
abs/1811.01216
0
0.34
References 
Authors
0
3
Name
Order
Citations
PageRank
Anindya De123924.77
Ryan O'Donnell294472.84
Rocco A. Servedio31656133.28