There is an error jean, I apologize... I made changes to the vectors and did
not correct the bottom line... this is the correct run:a <-c(0,1,1,0,1,0,0,0,0)
b <-c(0,0,0,1,0,0,0,0,0)
c <-c(1,0,1,0,1,1,0,0,0)
d <-c(0,1,0,1,0,1,0,0,0)
df <-rbind(a,b,c,d)
df <-cbind(df,h=c(sum(a)*8,sum(b)*8,sum(c)*8,s
Andras,
Is there an error in your post or am I missing something?
df[, 9] is made up of the last (9th) element of each of a, b, c, and d.
The minimum value for sum(df[, 9]) is 0.
Given your conditions, there are many, many ways to get this result.
Here is just one example:
a <-c(1,1,1,1,1,0,0,0,0
Dear All,
please provide help with the following:
we have
a <-c(0,1,1,0,1,0,0,0,0)
b <-c(0,0,0,1,0,0,0,0,0)
c <-c(1,0,1,0,1,1,0,0,0)
d <-c(0,1,0,1,0,1,0,0,0)
df <-rbind(a,b,c,d)
df <-cbind(df,h=c(sum(a)*8,sum(b)*8,sum(c)*8,sum(d)*8))
df <-cbind(df,df[,8]*c(1,2,3,2))
I would like to minimize the
du
-Original Message-
From: r-help-boun...@r-project.org [mailto:r-help-boun...@r-project.org] On
Behalf Of Ravi Varadhan
Sent: Monday, February 14, 2011 10:20 AM
To: 'Gabrielsen, Alexandros'; r-help@r-project.org
Subject: Re: [R] Optimization Question
Your function is non-smooth
On
Behalf Of Gabrielsen, Alexandros
Sent: Monday, February 14, 2011 7:17 AM
To: r-help@r-project.org
Subject: [R] Optimization Question
Hi all,
This is my first optimization code and am receiving the following error for
the following function:
fn <- function(p) {
+263*log(sqrt(2*pi)*sd(test$A))+ sum(
Hi all,
This is my first optimization code and am receiving the following error for the
following function:
fn <- function(p) {
+263*log(sqrt(2*pi)*sd(test$A))+ sum(log(abs(c(test$A[-1], 1))^p[3])) +
(sum(((test$A-p[1]+(p[2]+1)*c(test$A[-1],
1)))^2)/sum(sd(test$A)*(abs(c(test$A[-1], 1))^p[3])
The "1L", etc., forces the number to be integer:
> is.integer(1)
[1] FALSE
> is.integer(1L)
[1] TRUE
Hope this helps.
Spencer
Paul Smith wrote:
On Thu, Jun 11, 2009 at 9:56 PM, Brecknock, Peter wrote:
Apologies if this is not the correct list for this question.
The Rglpk pac
On Thu, Jun 11, 2009 at 9:56 PM, Brecknock, Peter wrote:
> Apologies if this is not the correct list for this question.
>
> The Rglpk package offers the following example in its documentation
>
> library(Rglpk)
> ## Simple mixed integer linear program.
> ## maximize: 3 x_1 + 1 x_2 + 3 x_3
> ## subj
Hi All
Apologies if this is not the correct list for this question.
The Rglpk package offers the following example in its documentation
library(Rglpk)
## Simple mixed integer linear program.
## maximize: 3 x_1 + 1 x_2 + 3 x_3
## subject to: -1 x_1 + 2 x_2 + x_3 <= 4
## 4 x_2 - 3 x_3 <= 2
## x
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