Displaying 3 results from an estimated 3 matches for "jjf".
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jf
2007 Sep 21
1
Error using nls()
...ame")
I tried to estimate a nonlinear regression model using nls(). I get
>
nls(log(q1)~b1+(b2/b3)*(d1^b3-1),data=x,start=list(b1=0,b2=1,b3=1),trace=TRUE)
246.132 : 0.0000 1.0000 1.0000 51.0907
Error in qr.solve(QR.B, cc) : singular matrix 'a' in solve
However, using:
> jjf <- function(x){z <- log(q1)-x[1]+(x[2]/x[3])*(d1^x[3]-1);sum(z*z)}
> optim(c(0,1,1),jjf)
rendered (some of) the results desired in a jiffy. What am I doing
wrong?
Dietrich
--
Dietrich Trenkler c/o Universitaet Osnabrueck
Rolandstr. 8; D-49069 Osnabrueck, Germany
email: Dietr...
2003 Jul 31
5
Wu-ftpd FTP server contains remotely exploitable off-by-one bug
...39;s no
reason to assume that FreeBSD machines aren't vulnerable, too. Which is
why I am confused as to the lack of discussion of this matter.
Can anyone shed some light on this?
Thank you,
John
--
+---------------------------------------------------------------------------+
| John Fox <jjf@mind.net> | System Administrator | InfoStructure |
+---------------------------------------------------------------------------+
| "The people and friends that we have lost, the dreams that have faded... |
| never forget them." -- Yuna, Final Fantasy X...
1999 Jun 11
0
smbclient seems touched in the head
...spectacularly unsuccessful in my attempts to locate the part
of NT wherein this name is defined.
I would appreciate any thoughts or words of wisdom that might shed some
light on this for me, and include below the output from "smbclient -d 10
-L mail2 -I 209.40.64.4 ".
Thank you,
john
jjf@wmni.net
----debugging output:
1999/06/11 15:53:10 client started (version 1.9.18p10)
Initialising global parameters
params.c:pm_process() - Processing configuration file "/etc/smb.conf"
Processing section "[global]"
doing parameter netbiosname = www
doing parameter guest accou...