Displaying 20 results from an estimated 38 matches for "saurav".
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gaurav
2009 Jul 11
2
Heckman Selection Model/Inverse Mills Ratio
...the above to run the outcome equation
model using OLS with the Inverse mills ratio as the control for selection
bias, kindly help, hence I need to get the IMR
3. How can this eb done in R using my concept or otherwise does there exist
anotehr way of doing what I wish to achieve
Please help
Thanks#
Saurav
--
Dr.Saurav Pathak
PhD, Univ.of.Florida
Mechanical Engineering
Doctoral Student
Innovation and Entrepreneurship
Imperial College Business School
s.pathak08@imperial.ac.uk
0044-7795321121
[[alternative HTML version deleted]]
2009 Oct 18
2
How to create MULTILEVELS in a dataset??
...uch that I can perform a multilevel model as follows:
lmer(y ~ education-level + householdincome + countrygdp + countrygdpsquare +
(1 I Level2),family=binomial(link="probit),data=dataset)
Please kindly help me with the relevant commands for creating this Level2
(having two variables)
Thanks
Saurav
Dr.Saurav Pathak
PhD, Univ.of.Florida
Mechanical Engineering
Doctoral Student
Innovation and Entrepreneurship
Imperial College Business School
s.pathak08@imperial.ac.uk
0044-7795321121
[[alternative HTML version deleted]]
2005 Feb 28
2
3d scatterplots of more than 1 data set
...that
is what i need. but i cannot seem to code different sets of data
differently. any help will be very helpful.
i tried scatterplot3d, but it is difficult to get the right angle in
it. i need to be able to rotate the axes, and export an eps file
from the right angle.
thanks in advance.
--
saurav
2009 Jul 01
2
getOptions("max.print") in R
...ber of observations in "variab" )
minus 797124 observations and prompts the following message
[ reached getOption("max.print") -- omitted 797124 entries ]]
Is there a way to see the entire set of data, ie all of 900,000 obs, and how
to then save this "variab"
Thanks
Saurav
--
Dr.Saurav Pathak
PhD, Univ.of.Florida
Mechanical Engineering
Doctoral Student
Innovation and Entrepreneurship
Imperial College Business School
s.pathak08@imperial.ac.uk
0044-7795321121
[[alternative HTML version deleted]]
2003 Jan 14
4
density plot - beginner's question
...lor coded two dimensional plot.
I have tried using
image(x, y, density)
but i am asked to put the data in ascending order. i am not sure
how i may put grid points in an ascending order.
I would also like to know if i could use any other function, other
than image.
thank you in advance.
--
saurav
2009 Jul 12
2
Heckman Selection MOdel Help in R
Hi Saurav!
On Sun, Jul 12, 2009 at 6:06 PM, Pathak,
Saurav<s.pathak08 at imperial.ac.uk> wrote:
> I am new to R, I have to do a 2 step Heckman model, my selection equation is
> below which I was successful in running but I am unable to proceed further,
>
>
>
> I have so far used the...
2007 Jan 24
2
modify rectangle color from image
...ve a 5x5 matrix, say, m.
m <- matrix(rnorm(25), nrow=5)
I create a grid of rectangles by:
image(m)
Now I want to change the color of rectangle (3,3) to blue.
I don't know how this could be done, and searching the web has given
me no hint.
Thanks for your help.
--
saurav
2009 Sep 30
3
django like admin interface
...ermission for different methods
(create, edit etc.) in controller based on roles . It should be similar
to django administration, where we can assign permission on methods
based on the role.
How can i do the implementaton ? Can anybody give me some pointers on
how to start ?
Thanks and Regards,
Saurav
--
Posted via http://www.ruby-forum.com/.
2009 Jun 29
2
Large Stata file Import in R
...ing able to import the stata file in R
I am therefor confused whteher there is problem with the version of my stata
file (which should not eb the case as I the smaller file of both versions
are working fine) or is it the size issue,
Its pretty important for me, kindly address this question
Thanks
Saurav
--
Dr.Saurav Pathak
PhD, Univ.of.Florida
Mechanical Engineering
Doctoral Student
Innovation and Entrepreneurship
Imperial College Business School
s.pathak08@imperial.ac.uk
0044-7795321121
[[alternative HTML version deleted]]
2011 Oct 07
1
loess question
...00,1:100,matrix(f.predict$se,nrow=100))
I get an image of the standard error that has peaks at regular grid
nodes. Shouldn't I expect to see roughly the same error that I put in
(in this case g_noise)? I notice that the noise peaks move apart for
higher span values.
Thanks for your help!
Saurav
2008 Apr 25
6
ActionMailer
...he
user, only after he logs in for the first time in my site, then the
second email should be sent. Can anybody give me some suggestion on how
to do it ??
NB: When the user clicks on the activation link, he is not directed to
user home page, only the home page of my website is displayed.
Thanks
Saurav
--
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2011 Mar 12
1
Issue creating vm channel
Hello,
I am trying to create a lucid guest VM with a vmchannel between the guest and the hypervisor. Details below:
KERNEL:
# uname -a
Linux saurav-desktop 2.6.38-2-generic #29~lucid1-Ubuntu SMP Mon Feb 7 13:35:14 UTC 2011 i686 GNU/Linux
QEMU:
# /usr/bin/qemu --version
QEMU emulator version 0.13.0, Copyright (c) 2003-2008 Fabrice Bellard
LIBVIRT:
# /usr/sbin/libvirtd --version
/usr/local/sbin/libvirtd (libvirt) 0.8.8
Below is a snippet of...
2003 Feb 13
2
multi-color plot
...o make multi-color plots. that is, i generally use,
plot(x, y, type="n")
text(x, y, labels=class)
here, the vector class denotes the class of each point. there are
usually 3-4 classes of points. how may i display the different
classes in different colors?
thanks for any help.
--
saurav
2012 May 03
1
cannot calculate standard estimate with predict on loess
...an=span, se=TRUE)
p<- predict(l, se=FALSE)
I have no problem, and p$fit gives me the desired fitted values. Note
that the only difference in this piece of code is se=FALSE.
My data d is a vector, and x and y are vectors too of the same length.
Any help will be greatly appreciated.
Thanks,
Saurav
2009 Jul 16
1
PROBIT REGRESSION FOR GROUPED/CLUSTERED DATA
...n my case) based upon
the uniqueness of "yearctrty"
I have worked weeks on this, kindly help me, I think it is a small issue to
fix in the equation, although since I am new to R, I do not exactly know
what exactly will fix my problem, so any help will be highly appreciated
Thanks
--
Dr.Saurav Pathak
PhD, Univ.of.Florida
Mechanical Engineering
Doctoral Student
Innovation and Entrepreneurship
Imperial College Business School
s.pathak08@imperial.ac.uk
0044-7795321121
[[alternative HTML version deleted]]
2009 Jun 29
1
Stata file Import and Analysis in R
...(.dta file) of size 600 MB, I need to import it in
R and do a 2SLS multilevel analysis on the data set. I would eb grateful if
help is provided for the first part of how to import this big file from
Stata to R and then how to open the imported Stata file in R?
Kindly help
Thanks in advance
--
Dr.Saurav Pathak
PhD, Univ.of.Florida
Mechanical Engineering
Doctoral Student
Innovation and Entrepreneurship
Imperial College Business School
s.pathak08@imperial.ac.uk
0044-7795321121
[[alternative HTML version deleted]]
2009 Jul 10
0
GLM for Probit for Panel Data
...+ gemedu + gemhinc + es_gdppc +
imf_pop + estbbo_m, family = binomial(link = "probit"))
What changes/additions do I make to this above probit regression command
such that the variable "yearctry" could be passed/assigned as the panel
variable?
Kindly help
Thanks in advance
Saurav
--
Dr.Saurav Pathak
PhD, Univ.of.Florida
Mechanical Engineering
Doctoral Student
Innovation and Entrepreneurship
Imperial College Business School
s.pathak08@imperial.ac.uk
0044-7795321121
[[alternative HTML version deleted]]
2009 Jul 15
0
DECLARING A PANEL VARIABLE???
...I cant make the
regression recognise "yearctry" as the panel variable in the regression
myProbit<- glm(s ~ age + gender + gemedu + gemhinc + es_gdppc +
imf_pop + estbbo_m, family = binomial(link = "probit"), data =
adpopdata)
Can anyone help me do this please???
Thanks
Saurav
--
Dr.Saurav Pathak
PhD, Univ.of.Florida
Mechanical Engineering
Doctoral Student
Innovation and Entrepreneurship
Imperial College Business School
s.pathak08@imperial.ac.uk
0044-7795321121
[[alternative HTML version deleted]]
2009 Oct 17
0
lmer function and Inverse mills ratio
...level probit ( ie please help
me with the command syntax)?*
The second question is,
*how can I then subsequently calculate the Inverse Mills ratio after the
above probit is calculated using lmer?* Is there any other way (if lmer does
not do this) to get IMR of a 3 level probit
Kindly help
Thanks
Saurav
--
Dr.Saurav Pathak
PhD, Univ.of.Florida
Mechanical Engineering
Doctoral Student
Innovation and Entrepreneurship
Imperial College Business School
s.pathak08@imperial.ac.uk
0044-7795321121
[[alternative HTML version deleted]]
2009 Oct 17
0
how to cluster data for use with lmer
...0.071 0.314 -0.297 0.256
*The model did not recognise group to be yearctry and shows 1 instead of
239,* can somebody help me as to how to make my model recognise es_gdppcppp
as a country level variable grouped by yearctry (such that yeractry no of
obs should be 239)
Please help
Thanks in advance
Saurav
--
Dr.Saurav Pathak
PhD, Univ.of.Florida
Mechanical Engineering
Doctoral Student
Innovation and Entrepreneurship
Imperial College Business School
s.pathak08@imperial.ac.uk
0044-7795321121
[[alternative HTML version deleted]]