Displaying 5 results from an estimated 5 matches for "marcinmichal".
2011 Sep 26
2
Triangular matrix upper to down
Hi,
suppose that we have a triangular upper matrix A
test <- matrix(ncol = 4, nrow = 4)
test[1, ] <- c(NA,1,1,1)
test[2, ] <- c(NA,NA,1,1)
test[3, ] <- c(NA,NA,NA,1)
test[4, ] <- c(NA,NA,NA,NA)
I know how quickly set diagonal value diag(test) <- 1. But how quickly set
down value i.e. matrix is symmetrical? Is there in r project any quickly
function?
Thanks,
Best
Marcin
2011 Aug 11
2
Removing all duplicate row except by one
Hi,
It's my problem, supppose that we have a data.frame:
t
a b c
1 1 1 1
2 0 1 1
3 1 1 1
4 0 0 0
5 1 0 1
6 0 1 0
7 1 1 1
8 0 1 0
I need extract duplicat row i.e i nedd frame like this
a b c
3 1 1 1
8 0 1 0
I try use subset(t, duplicated(t)) and t[duplicated(t), ] but this command
return
a b c
3 1 1 1
7 1 1 1
8 0 1 0
Best
Marcin M.
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2011 Jul 07
1
Naive Bayes Classifier
Hi,
Currently I testing the packets that contain built-in features for
classification. Actually I looked packages such as: e1071, Klar, Caret,
CORElearn. However, from what I noticed when building a naive Bayesian
classifier, that they package use of the finite mixture model to estimate P
(x | C) and using a normal distribution. In my research I use binary data
and I want modeled P (x | C), eg the
2011 Apr 27
3
Kolmogorov-Smirnov test
Hi,
I have a problem with Kolmogorov-Smirnov test fit. I try fit distribution to
my data. Actualy I create two test:
- # First Kolmogorov-Smirnov Tests fit
- # Second Kolmogorov-Smirnov Tests fit
see below. This two test return difrent result and i don't know which is
properly. Which result is properly? The first test return lower D = 0.0234
and lower p-value = 0.00304. The lower 'D'
2011 Aug 17
1
[statEt] Rmpi problem in Eclipse statEt
Hi,
I try use Rmpi package to my compute. In my work I'm using eclipse version
3.6.2 and statEt version 0.10.0 (launch Rterm or RJ). Actually I observed
strange behavior, when I try loading Rmpi directly I don't have any problem
i.e.:
library("Rmpi")
mpi.spawn.Rslaves()
8 slaves are spawned successfully. 0 failed.
master (rank 0, comm 1) of size 9 is running on: marcin-HP