Wikipedia:Articles for deletion/PCA applied to yield curves: Difference between revisions
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*'''Delete''', but for different reasons - as presented it is original research, there are similar things that are done with yield curves, but right now I'm not up on them enough to properly edit this. The principal components stuff seems like a logical way of approaching this problem, but ''where is it from''? [[User:Smallbones|Smallbones]] 14:28, 25 June 2006 (UTC)
*'''Delete''' as nonsense vio of [[WP:NOR]]. Actually, this vapid stub is a fitting :-/ parody of PCA, a widely used but suspect method in statistics (the geometry is fine; the problem is with the ''interpretation''; as typically used, PCA is just a method for lying with statistics--- in a way, it's rather fascinating that such a thing is possible, but plainly I digress.) ---[[User:Hillman|CH]] 10:06, 26 June 2006 (UTC)
*People, people: you and I may be trained as mathematicians: we know what "rotation" and "curvature" are "supposed to mean", and we beat anyone with a big stick who is so ''sloppy'' as to use it to mean anything else, but it seems clear enough to me from the context that by rotation is meant "vertical shear" (which certainly does take functions to functions) and by "curvature" is meant some quadratic term. [http://www.americanbanker.com/glossary.html?alpha=P Here] is just one of the many Google hits for ''PCA "yield curve"'': note that it implies that yield curves are ''the'' important application of PCA in finance. '''Keep'''. —[[User:Blotwell|Blotwell]] 10:36, 27 June 2006 (UTC)
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