Displaying 20 results from an estimated 12261 matches for "estimators".
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2015 Aug 05
2
Fwd: How to use CostModel?
Sorry if double posted... might have sent this to old mailing list
address...
---------- Forwarded message ----------
From: Stephen Thomas <stephen.warner.thomas at gmail.com>
Date: Wed, Aug 5, 2015 at 10:39 AM
Subject: How to use CostModel?
To: LLVM Dev <llvmdev at cs.uiuc.edu>
Hi,
I'm trying to use the built-in CostModel class to estimate the number of
machine instructions
2014 Jan 16
3
[LLVMdev] Loop unrolling opportunity in SPEC's libquantum with profile info
On Wed, Jan 15, 2014 at 5:30 PM, Nadav Rotem <nrotem at apple.com> wrote:
> Was the vectorizer successful in unrolling the loop in quantum_sigma_x? I
> wonder if 'size’ is typically high or low.
No. The vectorizer stated that it wasn't going to bother with the loop
because it wasn't profitable. Specifically:
LV: Checking a loop in "quantum_sigma_x"
LV: Found a
2005 Feb 15
1
shrinkage estimates in lme
Hello. Slope estimates in lme are shrinkage estimates which pull the
OLS slope estimates towards the population estimates, the degree of
which depends on the group sample size and the distance between the
group-based estimate and the overall population estimate. Although
these shrinkage estimates as said to be more precise with respect to the
true values, they are also biased. So there is a
2006 Apr 07
4
saving estimates from a for loop for later use
Thanks to the help of many on this list, I am now an R user and have
been able to write some functioning code to do matching estimation.
I have two for loops (i in 1:3, and j in 0:2). Within the loops, I
had been creating matrices of relevant estimation coefficents in order
to make lots of LaTeX tables.
Well, now I want to be able to combine the results of many different
estimations from within
2011 Jun 30
2
Saving fExtremes estimates and k-block return level with confidence intervals.
I am estimating a large model by groups. How do you save the results and?returns
the associated quantiles?
For this example I need a data frame
n?? ?xi??????? mu????????beta
1?? 0.1033614? 2.5389580 0.9092611
2? ?0.3401922? 0.5192882 1.5290615
3?? 0.5130798? 0.5668308 1.2105666
I also want to apply gevrlevelPlot() for each "n" or group.
?
#Example
n <- c(1, 1, 1, 1, 1, 1, 2, 2, 2,
2006 Jun 07
4
Density Estimation
Dear R-list,
I have made a simple kernel density estimation by
x <- c(2,1,3,2,3,0,4,5,10,11,12,11,10)
kde <- density(x,n=100)
Now I would like to know the estimated probability that a
new observation falls into the interval 0<x<3.
How can I integrate over the corresponding interval?
In several R-packages for kernel density estimation I did
not found a corresponding function. I
2006 May 08
1
Panel Data Estimators (within, between, Random Effects estimator)
...abase.
I have already run pooled OLS but I would need to calculate a Fixed
Effects Estimator (within estimator). Unfortunately I couldn't find
anything like that in the RSearch and I suppose that lme (in package
nlme) is not the answer.
Is there any defined function to calculate panel data estimators like
Fixed Effects Estimators (within), a between estimator or a Random
Effects estimator. For more details on the estimators I would like to
use see: Cameron, A. C.; Trivedi, P. K.: "Microeconometrics. Methods and
Applications", Cambridge University Press, 2005, pp. 695-809.
Thanks...
2018 Aug 14
2
[PATCH] v2v: Add --print-estimate option to print source size estimate.
This option prints the estimated size of the data that will be copied
from the source disk.
For interest, the test prints:
3747840 ../test-data/phony-guests/windows.img
Estimate: 3710976
---
v2v/Makefile.am | 2 ++
v2v/cmdline.ml | 17 ++++++++++--
v2v/cmdline.mli | 2 ++
v2v/test-v2v-print-estimate.sh | 47 +++++++++++++++++++++++++++++++++
2008 Jan 27
1
OR estimate
Hello,
I have a loop with 1000 repetitions which includes OR computation of an
exposure factor and outcome.
I compute OR like this:
t<-table(exposure,outcome)
oddsratio(t)$measure["estimate"]
This gives me the estimates for exposure=0 and exposure=1 but exposure=0 is
the reference group and i need only the estimate for exposure=1.
I specified a matrix OR with 3 columns (for OR
2005 May 19
3
Simultaneous estimation of mean and garch eq'n
Is it possible to simultaneously estimate mean and GARCH parameters in R?
In other words, I would like to estimate the normal regression equation
Y = b X + u
and simultaneously do a garch process on the u's to correct the standard
errors.
I was thinking maybe something with systemfit(), but I can't quite come
up with it.
Thanks,
Tobias
--
2011 Feb 28
1
Robust variance estimation with rq (failure of the bootstrap?)
I am fitting quantile regression models using data collected from a
sample of 124 patients. When modeling cross-sectional associations, I
have noticed that nonparametric bootstrap estimates of the variances
of parameter estimates are much greater in magnitude than the
empirical Huber estimates derived using summary.rq's "nid" option.
The outcome variable is severely skewed, and I am
2016 Oct 06
2
LoopVectorizer -- generating bad and unhandled shufflevector sequence
Hi,
I have experimented with enabling the LoopVectorizer for SystemZ. I have
come across a loop which, when vectorized, seems to have been poorly
generated. In short, there seems to be a completely unnecessary sequence
of shufflevector instructions, that doesn't get optimized away anywhere.
In other words, there is a shuffling so that leads back to the original
vector:
[0 1 2 3
2011 Nov 15
1
Estimating model parameters for system of equations
Hi all,
I'm trying to estimate model parameters in R for a pretty simple system of
equations, but I'm having trouble. Here is the system of equations (all
derivatives):
eqAlgae <- (u_Amax * C_A) * (1 - (Q_Amin / Q_A))
eqQuota <- (p_max * R_V) / (K_p + R_V) - ((Q_A-Q_Amin)*u_Amax)
eqResource <- -C_A * (p_max * R_V) / (K_p + R_V)
eqSystem <- list(C_A = eqAlgae, Q_A = eqQuota,
2005 Apr 20
2
heckit / tobit estimation
Dear All,
we (Ott Toomet and I) would like to add functions for maximum likelihood (ML)
estimations of generalized tobit models of type 2 and type 5 (*see below) in
my R package for microeconomic analysis "micEcon". So far we have called
these functions "tobit2( )" and "tobit5( )".
Are these classifications well known? How are these functions called in other
2009 Nov 03
1
Maximum Likelihood Estimation
Hi,
I would like estimate a model for function of production's Coob-Douglas using maximum likelihood. The model is log(Y)= beta[1]+beta[2]*log(L)+beta[3]*log(K). I tried estimate this model using the tools nlm ( ) and optim ( ) using the log-likelihood function below:
> mloglik <- function (beta, Y, L, K) {
+ n <- length(Y)
+ sum ( (log(Y)-
2018 Aug 14
0
Re: [PATCH] v2v: Add --print-estimate option to print source size estimate.
On Tue, Aug 14, 2018 at 8:29 PM Richard W.M. Jones <rjones@redhat.com>
wrote:
> This option prints the estimated size of the data that will be copied
> from the source disk.
>
> For interest, the test prints:
>
> 3747840 ../test-data/phony-guests/windows.img
> Estimate: 3710976
>
Why not use qemu-img measure on the overlay?
It gives a conservative estimate that
2005 Nov 17
1
Standard Error
> -----Original Message-----
> From: r-help-bounces at stat.math.ethz.ch [SMTP:r-help-bounces at stat.math.ethz.ch] On Behalf Of Mark Miller
> Sent: Thursday, November 17, 2005 10:16 AM
> To: r-help at stat.math.ethz.ch
> Subject: [R] Standard Error
>
> I have worked out that when I fit data I get an estimate and a standard error,
> but all the definitions I can find
2018 Aug 16
0
[PATCH v2] v2v: Add --print-estimate option to print copy size estimate.
This option prints the estimated size of the data that will be copied
from the source disk.
Currently this overestimates by the size of the qcow2 header, but for
real disk images that doesn't matter much.
For example:
$ virt-builder fedora-27
$ virt-v2v -i disk fedora-27.img -o null --machine-readable --print-estimate
[...]
virt-v2v: This guest has virtio drivers installed.
[ 44.0] Mapping
2003 Oct 01
1
hypergeometric & population estimates
"help"
We want to estimate the number of caribou in Jasper. We recently conducted
an aerial survey and saw 70 uncollared caribou and 8 of 11 collared
caribou. We want to estimate the number of caribou in this population with
95% confidence limits. Gary White uses the hypergeometric distribution and
determines the population estimates using maximum likelihood and 95%CL as
2004 Oct 05
2
Nelson-Aalen estimator in R
Hi,
I am taking a survival class. Recently I need to do the Nelson-Aalen
estimtor in R. I searched through the R help manual and internet, but could
not find such a R function. I tried another way by calculating the
Kaplan-Meier estimator and take -log(S). However, the function only
provides the summary of KM estimator but no estimated values. Could you
please help me with this? I would