On Mon, 4 Dec 2006, Roger Hui wrote: > Applications of the monad f/ .g are easier to > envision in an alternative formulation of the > generalized determinant, namely as f/ over g/ > over diagonals of matrices obtained by all > possible permutations of the major cells.
Many thanks for the clear explanation. Another example of monadic f/ . g is the odds ratio for 2x2 tables: oddrat=: %/ . * NB. or if you like -/ . + &.: ^. oddrat 0.9 0.1,: 0.2 0.8 36 >... > Regarding the proposition > ((~:/ . *.) -: (2 | +/ . *)) A > in your msg, I think you mean 2|-/ .* instead of > 2|+/ .* . Yes. Memo to self: connect brain before using arms. J.E.H.Shaw [Ewart Shaw] [EMAIL PROTECTED] TEL: +44 2476 523069 Department of Statistics, University of Warwick, Coventry CV4 7AL, UK http://www.warwick.ac.uk/statsdept http://www.ewartshaw.co.uk Will read usenet posts up to the first insult (which may be in the Subject) ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
