Hi Hamed,
I guess the first thing to do is to find out what "test.df" is:
is.data.frame(test.df)
dim(test.df)
If these come up FALSE or NULL respectively, you are not passing the
correct data argument to the boot function.
Jim
On Sun, Nov 29, 2015 at 5:04 AM, Hamed Nofal wrote:
> Dear Sir
>
Hey,
I was trying to implement Stochastic Gradient Boosting in R. Following is
my code in rstudio:
library(caret);
library(gbm);
library(plyr);
library(survival);
library(splines);
library(mlbench);
set.seed(35);
stack = read.csv("E:/Semester 3/BDA/PROJECT/Sample_SO.csv", head
=TRUE,sep=
Hey,
I was trying to implement Stochastic Gradient Boosting in R. Following is my
code in rstudio:
library(caret);
library(gbm);
library(plyr);
library(survival);
library(splines);
library(mlbench);
set.seed(35);
stack = read.csv("E:/Semester 3/BDA/PROJECT/Sample_SO.csv", head =TRUE,sep=",");
dim
Hi,
Say I have a sparse Matrix X, and a sparse vector (stored as a 1-column
sparse Matrix A), with X and A having the same number of rows, and I
wish to multiply each column of X by A, but would like the operation to
take full advantage of the sparseness of both X and A. In other words I
want
All,
I am trying to format a graph using scales and percent format but I am missing
something and all my graphics books on ggplot2 are now quite far behind where
ggplot2 is today. I seem to be missing a trick but the documentation implies
that percent_format() will multiply by 100 and add %
Dear Sir
I am new to R.statistics. I am an Anaesthetist using the version Ri 386
3.2.2
I have tested the patients' response sequence for a dose sequence, and I
need to calculate an estimate of the minimum dose that gives a certain
effect on a certain percentage of the patients' number.
I am using
Your right <- (1:n)*dx mean that your leftmost rectangle's left edge
is at 0, but you want it to be at -4. You should turn this into a function
so you don't have to remember how the variables in your code depend
on one another. E.g.,
showIntegral <- function (f, xmin, xmax, n = 16)
{
curve(
Is this a homework problem? This list has a no homework policy.
Cheers,
Bert
Bert Gunter
"Data is not information. Information is not knowledge. And knowledge
is certainly not wisdom."
-- Clifford Stoll
On Fri, Nov 27, 2015 at 4:08 PM, mviljamaa wrote:
> How can I use uniroot to find a ro
Dear Peter: in my previous email I forgot to reply to the list too
I used your code for more than one examples, and it works nicely. But when
I tried to use for the the function: f(x) = x^2, it looks like I am missing
something, but I could not figured it out.
This what I used:
f <- function(x
How can I use uniroot to find a root in the interval (0,1) when my
function does not change sign in this interval.
I've tried plugging in some values and seems like e.g. f(50) < 0 and
then I can pick c(0,50). But this sounds really weird, given that I need
to find a root in (0,1).
So what ar
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