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4a1590df1d5968d41b855005bb8b67bf-Paper.pdf
For regression, we obtain a running time of O(nd+(nL/ยต) p snL/ยต) where ยต > 0 is the smallest eigenvalue ofA>A. This running time improves upon the previous best unaccelerated running time of O(nd + nLd/ยต). This result expands the regimes where regression can be solved in nearly linear time from whenL/ยต= O(1)towhenL/ยต= O(d2/3/(sn)1/3).