The way I read ,&< Is that , is bonded with < . This does not make sense however since it would mean that dyad < is turned into a monad and , does not make sense as a left argument for < ( less than). What is wrong in my thinking cheers Roelof Contact information Dr. Roelof K. Brouwer PEng Professor Department of Computing Science School of Advanced Technologies and Mathematics Thompson Rivers University 900 McGill Road, PO Box 3010 Kamloops, BC, Canada,V2C 5N3 skype RoelofBrouwer telephone numbers 1-250 828 5219 work 1-250-377-6133 fax home page www.tru.ca/advtech/compsci/faculty/rbrouwer email [EMAIL PROTECTED] www.cariboo.tru.ca/advtech/compsci/faculty/rbrouwer/pickup/flighttoNanaimo.w mv www.picasaweb.google.com/rkbrouwer
-----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Roger Hui Sent: September 5, 2007 8:47 AM To: General forum Subject: Re: [Jgeneral] normalize data The dyad ,&<"r can be used to illustrate rank: ] x=: 4 3 2 [EMAIL PROTECTED] 5 0 2 3 4 2 2 0 0 0 3 3 0 0 0 4 1 4 0 1 4 4 3 0 2 ] y=: 3 2 [EMAIL PROTECTED] 5 4 0 1 2 2 4 x ,&<"_1 _ y +---+---+ |0 2|4 0| |3 4|1 2| |2 2|2 4| +---+---+ |0 0|4 0| |0 3|1 2| |3 0|2 4| +---+---+ |0 0|4 0| |4 1|1 2| |4 0|2 4| +---+---+ |1 4|4 0| |4 3|1 2| |0 2|2 4| +---+---+ x -"_1 _ y _4 2 2 2 0 _2 _4 0 _1 1 1 _4 _4 0 3 _1 2 _4 _3 4 3 1 _2 _2 Likewise the monad <"r <"_1 x +---+---+---+---+ |0 2|0 0|0 0|1 4| |3 4|0 3|4 1|4 3| |2 2|3 0|4 0|0 2| +---+---+---+---+ +/"_1 x 5 8 3 3 8 1 5 9 <"1 x +---+---+---+ |0 2|3 4|2 2| +---+---+---+ |0 0|0 3|3 0| +---+---+---+ |0 0|4 1|4 0| +---+---+---+ |1 4|4 3|0 2| +---+---+---+ +/"1 x 2 7 4 0 3 3 0 5 4 5 7 2 ----- Original Message ----- From: Roelof Brouwer <[EMAIL PROTECTED]> Date: Wednesday, September 5, 2007 7:40 Subject: RE: [Jgeneral] normalize data To: 'General forum' <[email protected]> > Thanks. I guess that -"_1 _ means > that subtraction is performed over > the first dimension of the left argument ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
