Displaying 7 results from an estimated 7 matches for "banachewicz".
2014 Jan 17
0
Quantitative R developer in Amsterdam
...Experience with numerical programming and optimisation.
- Familiarity with regulatory requirements (Solvency II, Basel II /
III) is a plus.
- Familiarity with Credit Portfolio models is a plus.
- SQL experience
regards,
Konrad
For additional information contact:
Konrad Banachewicz, PhD
email: konrad.banachewicz at gmail.com
linkedin: nl.linkedin.com/pub/konrad-banachewicz/2/957/887/
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2006 Mar 28
2
Skewed t distribution
Dear All,
I am working with skewed-t copula in my research recently, so I needed to
write an mle
procedure instead of using a standard fit one; I stick to the sn package. On
subsamples of the entire population that I deal with, everything is fine.
However, on the total sample (difference in cross-sectional
dimension: 30 vs 240) things go wrong - the objective function diverges to
infinity. I
2004 Sep 27
1
multiple time series
Hello everybody,
I have the following problem: I read a multiple time series (along with
column names), and then need to manipulate the univariate components
separately in order to compute the statistics of interest. Can someone
tell me how can I access the univariates separately through their names ?
I need to do it on a ts object (and not data frame, where I know how to),
for the sake of later
2006 Jun 02
1
Multivariate skew-t cdf
Dear All,
I am using the pmst function from the sn package (version 0.4-0). After
inserting the example from the help page, I get non-trivial answers, so
everything is fine. However, when I try to extend it to higher dimension:
xi <- alpha <- x <- rep(0,27)
Omega <- diag(0,27)
p1 <- pmst(x, xi, Omega, alpha, df = 5)
I get the following result:
>p1
[1] 0
attr(,"error")
2005 Aug 16
0
vector autoregression
dear All,
I have the following problem: I need to calculate an h-step ahead forecast
from a var model (estimated with a dse1 method estVARXls), which in
turn will be used as an input for another model as conditioning data, so
I need it as a simple, numeric matrix. No exogenous input is used.
However, the standard forecast method produces a 1-element list
that includes a forecast matrix, yet I
2006 May 05
0
Workspace restoration error
Dear All,
I am working with the new release of R (2.3.0) and have the following
problem:
I started it the first time, did some computations and the saved the
workspace
upon exit. Next time I launched it, I got a message "fatal error: unable to
restore saved
data in .RData".However, if I physically remove the .Rdata file from the
directory,
launch "clean" and manually load the
2010 Apr 08
0
biOps package installation
Dear All,
I found this nice example of PCA application on the web
http://www.r-bloggers.com/principal-components-and-image-reconstruction/
and wanted to reproduce the results for myself. I installed biOps the usual
way
and got the message
*package 'biOps' successfully unpacked and MD5 sums checked*
but when loading the package, I get
*Error in inDL(x, as.logical(local),