Displaying 6 results from an estimated 6 matches for "hsuan".
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suan
2003 Dec 02
0
xtabs or model.frame (PR#5461)
...on Windows),
# hence we cannot send the bug report directly from R.
# Please copy the bug report (after finishing it) to
# your favorite email program and send it to
#
# r-bugs@r-project.org
#
######################################################
Here is the bug report I got from Professor Hsuan, and my exploration
of it. The cause of the problem is that a character vector is not
coerced to factor by xtabs or model.frame.
Is it a bug? I think yes. Character vectors are so frequently
coerced to factor that it is reasonable to assume that it will happen
here. The documentation is ambigu...
2008 Mar 31
1
plot 3dimensional points with "log" axes
Dear R users
I am looking for functions that can plot 3 dimensional
figures *with logarithmic axes*.
I tried scatterplot3d (under package scatterplot3d) but
the log parameter is not implemented (although "log"
appears in the parameter list).
Does anyone has some suggestions? Thanks a lot
Austin
2008 Apr 03
1
How to ask for *fixed* number of distributions under parameterized Gaussian mixture model.
Dear R users:
I am wondering how to ask for *fixed* number of distributions under
parameterized Gaussian mixture model.
I know that em() and some related functions can predict the
parameterized Gaussian mixture model. However, there seems no
parameter to decide number of distributions to be mixed (if we known
the value in advance).
That is, assume I know the (mixed)data is from 3 different
2010 Jun 08
2
OpenSSH with "resumable" functionality
...egularly.
You may also be interested in an article "Design and Implementation of a
Mobile SSH Protocol", if you haven't seen it, since that team implemented
(afaict) the same feature, whether or not it's related to the existing
implementation...
The article attribution lists:
I-Hsuan Huang?, Wei-Jin Tzeng?, Szu-Wei Wang?, and Cheng-Zen Yang?
Department of Computer Science and Engineering
Yuan Ze University, Chungli, Taiwan, R.O.C.
? {ihhuang,czyang}@syslab.cse.yzu.edu.tw <czyang%7D at syslab.cse.yzu.edu.tw>
? {s922344,s922351}@mail.yzu.edu.tw <s922351%7D at mail.yzu.ed...
2008 Feb 15
1
Questions about EM algorithm
Dear all:
Assume I have 3 distributions, x1, x2, and x3.
x1 ~ normal(mu1, sd1)
x2 ~ normal(mu2, sd2)
x3 ~ normal(mu3, sd3)
y1 = x1 + x2
y2 = x1 + x3
Now that the data I can observed is only y1 and y2. It is
easy to estimate (mu1+m2), (mu1+mu3), (sd1^2+sd2^2) and
(sd1^2+sd3^2) by EM algorithm since
y1 ~ normal(mu1+mu2, sqrt(sd1^2+sd2^2)) and
y2 ~ normal(mu1+mu3, sqrt(sd1^2+sd3^2))
However, I want
2008 Mar 13
1
How to set type of censored data in coxph regression
Dear R users,
I tried to analysis the hazard function of some data by coxph function
in survival package.
The type of the data include "left-censored", "right-censored", "both
right-censored and
left-censored" (btw, does this has a technical term?), and "complete" ones.
I noticed that event (one parameter in "Surv()") might be an indicator
for the