Displaying 7 results from an estimated 7 matches for "m_0".
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2019 Sep 14
0
'==' operator: inconsistency in data.frame(...) == NULL
...#################
d_0 = data.frame(a = numeric(0)) # zero length data.frame
d_00 = data.frame(numeric(0)) # zero length data.frame without names
names(d_00) <- NULL # remove names to obtain value being an empty list()
at the end of Ops.data.frame
d_3 = data.frame(a=1:3) # non-empty data.frame
m_0 = matrix(logical(0)) # zero length matrix
#------------------------
# error A:
# Error in matrix(if (is.null(value)) logical() else value, nrow = nr,
dimnames = list(rn,? :
# length of 'dimnames' [2] not equal to array extent
d_0 == 1?? # error A
d_00 == 1? # <0 x 0 matrix>
d_3 == 1...
2019 Sep 11
2
'==' operator: inconsistency in data.frame(...) == NULL
Sorry, I can't reproduce the example below even on the same machine.
However, the following example produces the same error as NULL values in
prior examples:
> setClass("FOOCLASS",
+????????? representation("list")
+ )
> ma = new("FOOCLASS", list(M=matrix(rnorm(300), 30,10)))
> isS4(ma)
[1] TRUE
> data.frame(a=1:3) == ma
Error in
2011 Dec 03
2
density function always evaluating to zero
...efine posterior density for model 0
f <- function(alpha,h) {
e <- y - alpha * x1^2
const <- (2*pi)^(-n/2) / ( gamma(v/2) * (v*s2_m1/2)^(-v/2) )
kernel <- h^((v-1)/2) * exp((-(h/2) * sum(e^2)) - (v*s2_m0)*h)
x <- const * kernel
return(x)
}
# calculate approximation of p(y|m_0)
m0 <-f(alpha_sample,h_sample_m0)
post_m0 <- sum(m0) / nrDraws
--
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Sent from the R help mailing list archive at Nabble.com.
2009 Jul 16
2
evaluate sum of sum
Hi R-users,
Could anybody show me how to write a code to evaluate sum(z[i] + sum(k[j]*(z[i])^(k[j])), i=1 to 4, j=0 to infinity) ?
Thank you so much for any help given.
[[alternative HTML version deleted]]
2008 May 07
1
dlm with constant terms
Hi,
I am trying to figure how to use dlm with constant terms
(possibly time-dependent) added to both equations
y_t = c_t + F_t\theta_t + v_t
\theta_t = d_t + G_t\theta_{t-1} + w_t,
in the way that S-PLUS Finmetrics does?
Is there any straightforward way to transform the above to
the default setup?
Thanks,
Tsvetan
--------------------------------------------------------
NOTICE: If received in
2003 Oct 21
2
Denominator Degrees of Freedom in lme() -- Adjusting and Understanding Them
...effects), the degrees of freedom seem to be N*T-N-1, where N is total
sample size and T is the number of timepoints (at least when data are
balanced). In the Pinheiro and Bates book (p. 91), the degrees of freedom
are given as m_i-(m_1-1+pi), where m_i is the number of groups at the ith
level, m_0=1 if an intercept is included and p_i is the sum of the degrees
of freedom corresponding to the terms estimated. I'm not sure how the
N*T-N-1 matches up with the formula given on page 91. It seems to me the
number of "groups" (i.e., m_i) would be equal to N, the number of
individu...
2006 Apr 29
1
SSPIR problem
I am having a problem with the package SSPIR. The code below
illustrates it. I keep getting the message: "Error in y - f :
non-conformable arrays."
I tried to tweak the code below in many different ways, for example,
substituting rbind for cbind, and sometimes I get a different error
message, but I could not find a variation of this code that would
work.
Any help will be greatly