reference for ginv
Gabor Grothendieck wrote:
I have the second edition and in that one there are references: Rao & Mitra Generalized inverse ..., Wiley, 1971 Pringle & Rayner, Generalized inverse ..., Griffin, 1971 Dodge, Analysis of Experiments .., Wiley, 1985
far from obvious. so ?ginv should refer directly to these, or state which page in MASS provides the right references. does 3rd p. 100 (as provided in ?ginv) link to these (or other) publications? vQ
On Wed, Feb 4, 2009 at 9:25 AM, Wacek Kusnierczyk <Waclaw.Marcin.Kusnierczyk at idi.ntnu.no> wrote:
?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
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