Message-ID: <4989A570.1020003@idi.ntnu.no>
Date: 2009-02-04T14:25:52Z
From: Wacek Kusnierczyk
Subject: reference for ginv
?ginv provides 'Modern Applied Statistics with S' (MASS), 3rd, by
Venables and Ripley as the sole reference.
I happen to have this book (4th ed) on loan from our library, and as far
as I can see, ginv is mentioned there twice, and it is *used*, not
*explained* in any way. (It is used on p. 148 in the 4th edition.)
ginv does not appear in the index of MASS. ginv is an implementation of
the Moore-Penrose generalized inverse, but I can't find any reference to
an appropriate publication from Moore and Penrose in MASS either.
Admittedly, MASS is inadequate as a reference for ginv, and it is
desirable that the reference be corrected. Is this an isolated
incident, or a general practice? (Perhaps the appropriate reference has
been removed in MASS 4th?)
vQ