[Archetypes-commits] r18 - pkg/inst/doc

[noreply at r-forge.r-project.org]

Author: manuel
Date: 2009-04-24 17:37:08 +0200 (Fri, 24 Apr 2009)
New Revision: 18

Modified:
   pkg/inst/doc/archetypes.Rnw
Log:


Modified: pkg/inst/doc/archetypes.Rnw
===================================================================
--- pkg/inst/doc/archetypes.Rnw	2009-04-23 16:44:01 UTC (rev 17)
+++ pkg/inst/doc/archetypes.Rnw	2009-04-24 15:37:08 UTC (rev 18)
@@ -134,9 +134,9 @@
 	\item The data are best approximated by convex combinations of the
 	archetypes, i.e., they minimize
 	\[
-		\mbox{RSS} = \|X - Z^{\top} \alpha\|_2
+		\mbox{RSS} = \|X - \alpha Z^{\top}\|_2
 	\]
-	with $\alpha$, the coefficients of the archetypes, a $k \times n$
+	with $\alpha$, the coefficients of the archetypes, an $n \times k$
 	matrix; the elements are required to be greater equal $0$ and
 	their sum must be $1$, i.e., $\sum_{j=1}^{k} \alpha_{ij} = 1$
 	with $\alpha_{ij} \geq 0$ and $i = 1, \ldots, n$. $\|\cdot\|_2$