Tag Archives: weights_map

TTLS in a Steig Context

Jun 2, 2009 – 10:39 PM

Many CA readers know a lot about regression and quite a bit about principal components, but I dare say that a much fewer number are familiar with Truncated Total Least Squares (to which the regpar parameter belongs.) We’re seeing interesting interactions between PC=k and regpar=r – and there is little, if anything, in regular statistical […]

By Stephen McIntyre | Posted in Steig at al 2009 | Also tagged , , , | Comments (89)

Interaction of Infilling on Std Deviation

Feb 16, 2009 – 1:19 PM

Standardization in Mannian algorithms is always a bit of an adventure. The bias towards bristlecones and HS-shaped series from the impact of Mann’s short segment standardization on his tree ring PCs has been widely publicized. Smerdon’s demonstration of defects in Rutherford et al 2005, Mann et al 2005 and Mann et al 2007 all relate […]

By Stephen McIntyre | Posted in General, Steig at al 2009 | Also tagged , , , | Comments (91)