Remarks on Kneip's linear smoothers
  We were trying to understand the analysis provided by Kneip (1994, Ordered Linear Smoothers). In particular we wanted to persuade ourselves that his results imply the oracle inequality stated by Tsybakov (2014, Lecture 8). This note contains our reworking of Kneip's ideas. 
S\"oren R. K\"unzel, David Pollard, Dana Yang
math.ST stat.TH