Displaying 20 results from an estimated 33 matches for "quantif".
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quantify
2011 Jun 18
0
help with quantification of high density region
...ean. The heatmap is created for coordinate points of a location occupied by an animal, so the high density means the animal spent most of its time there, but what percentage of time? if is possible to get this out of the data and/or displayed more clearly in the legend?
I addition, I would like to quantify the area size of the highest density region. Alternatively or in addition to this, I wouldn't mind measuring how many 'zones' the highest density region occupies. This might be more difficult, unless I can overlay a grid overtop of the data and count the number of zones covered. I have...
2009 Aug 20
1
Questions on factors in regression analysis
...e response variable is numeric. Some factors are important
but others not.
How to determine which categorical variables are significant to the
response variable?
Q2.
As we knew, lm can deal with categorical variables.
I thought, when there is a categorical predictor, we may use lm directly
without quantifying these factors and assigning different values to factors
would not change the fittings as shown:
x <- 1:20 ## numeric predictor
yes.no <- c("yes","no")
factors <- gl(2,10,20,yes.no) ##factor predictor
factors.quant <- rep(c(18.8,29.9),c(10,10)) ##quantificatio o...
2006 Oct 23
2
Recurrence plot in package "tseriesChaos"
...(like %recur, %det, trend, etc...) and that can be stored dynamically in a output file for all the 56 datasets.
It seems that the function recurr does not calculate these parameters. Is there another function in the package that does so? If not, is there another package that deals with recurrence quantification analysis? I would be very glad to have this problem solved in R itself.
Thanking in advance,
Joy
2009 Sep 19
0
homals package and core loop
...mals package
http://www.jstatsoft.org/v31/i04
will get a major programming overhaul. This will take some time,
but what's a few years on a 40-year project. Suggestions
from the audience are welcome.
homals() has a core loop over the m variables in which
1. tapply is used to compute category quantification (centroids)
2. category quantifications are then adjusted to satisfy the
rank and level constraints
The idea is to replace 1 by least squares fitting of a B-spline and
to adjust 2 accordingly. The core will be re-programmed in C
and/or FORTRAN (sometimes using existing routines), and the...
2009 Sep 19
0
homals package and core loop
...mals package
http://www.jstatsoft.org/v31/i04
will get a major programming overhaul. This will take some time,
but what's a few years on a 40-year project. Suggestions
from the audience are welcome.
homals() has a core loop over the m variables in which
1. tapply is used to compute category quantification (centroids)
2. category quantifications are then adjusted to satisfy the
rank and level constraints
The idea is to replace 1 by least squares fitting of a B-spline and
to adjust 2 accordingly. The core will be re-programmed in C
and/or FORTRAN (sometimes using existing routines), and the...
2009 Mar 11
1
OT: Likelihood ratio for the randomization/permutation test?
...nts the
distribution expected by chance.
Within a Null Hypothesis Testing framework you then estimate the
probability of the null by observing the proportion of simulated
difference scores that are greater in magnitude than the observed
difference score. Any guesses on how to translate this into a
quantification of evidence?
Mike
--
Mike Lawrence
Graduate Student
Department of Psychology
Dalhousie University
Looking to arrange a meeting? Check my public calendar:
http://tinyurl.com/mikes-public-calendar
~ Certainty is folly... I think. ~
2017 Oct 12
1
Recurrence plots in R using different colours
...lly that would mean a plot with six different colours (next to white,
which means no recurrence), rather than the plain black and white plot which
does not reflect the nature of the recurrence. I hope that my explanation is
clear enough.
My procedure up until now has been:
1) perform a recurrence quantification analysis:
testplot <- rqa(time.series = test$Code, embedding.dim = 1, time.lag = 1,
radius = 0.1,lmin =2, vmin =2, distanceToBorder = 2, save.RM
= TRUE, do.plot = TRUE)
This plot is based on a TRUE FALSE sparse matrix.
2) Accordingly the next step was to transform th...
2011 Jun 24
2
mgcv:gamm: predict to reflect random s() effects?
Dear useRs,
I am using the gamm function in the mgcv package to model a smooth relationship between a covariate and my dependent variable, while allowing for quantification of the subjectwise variability in the smooths. What I would like to do is to make subjectwise predictions for plotting purposes which account for the random smooth components of the fit.
An example. (sessionInfo() is at bottom of message) My model is analogous to
> out.gamm &...
2015 Aug 01
3
[LLVMdev] [cfe-dev] Clang devirtualization proposal
On Fri, Jul 31, 2015 at 6:18 PM, Reid Kleckner <rnk at google.com> wrote:
> Consider this pseudo-IR and some possible transforms that I would expect to
> be semantics preserving:
>
> void f(i32* readonly %a, i32* %b) {
> llvm.assume(%a == %b)
> store i32 42, i32* %b
> }
> ...
> %p = alloca i32
> store i32 13, i32* %p
> call f(i32* readonly %p,
2010 Jan 31
0
Bioinformatician, Austria
...and
developdiagnostic biomarkers as well as biomarkers for the
characterization ofdisease models and drug effects ? including side
effects.
Essential functions
* Analyzing omics data and integration of Metabolomics with other omics
data-selection of likely metabolite, protein and RNA targets for
quantification.
* Providing software support for team members.
* Contributing to presentations, patent applications, scientific
publications and reporting on project funding.
Requirements
* Candidate can work independently and is highly motivated, creative and
result-oriented.
* Problem solving skills an...
2007 Dec 23
0
anacor: yet another ca package
...rd scaling, Benz?cri
scaling, Goodman scaling, row-centroid, or column-centroid
scaling.
The summary method writes out a table with the chi-square
(inertia) decomposition, it also writes out the singular
values, and their asymptotic standard errors under multinomial
sampling. Plots of the category quantifications (row scores
and column scores) can be made optionally with asymptotic
confidence ellipses, again based on multinomial sampling.
The package contain various utilities to switch data formats,
in particular to transform data frames to Burt matrices,
to indicator matrices, and even to fuzzy in...
2009 Aug 13
0
dcemri: A package for medical image analysis
...a the q-form or s-form
codes in NIfTI.
Software development is currently under SourceForge via
http://www.dcemri.org
A mailing list has been established and feedback is appreciated.
Functionality includes:
Motion correction and co-registration via "fast template matching"
T1 quantification via multiple flip-angle acquistions (inversion recovery
coming soon!)
Conversion to gadolinium contrast agent concentration
Parametric models for the arterial input function (AIF), both
literature-based (Tofts-Kermode and Fritz-Hansen) and data-adaptive.
Kinetic parameter estimation using...
2006 Dec 03
0
overplot() examples fail (package:gplots)
...plots)
data(rtPCR)
overplot( RQ ~ Conc..ug.ml. | Test.Substance,
data=rtPCR,
subset=Detector=="ProbeType 7" & Conc..ug.ml. > 0,
same.scale=TRUE, log="xy", f=3/4,
main="Detector=ProbeType 7",
xlab="Concentration (ug/ml)",
ylab="Relative Gene Quantification"
)
# Error in lowess.default(mf[[-response]], mf[[response]], f = f,
iter = iter, :
# 'x' is empty
# In addition: Warning messages:
# 1: no non-missing arguments to min; returning Inf
# 2: no non-missing arguments to max; returning -Inf
************************************...
2007 Dec 23
0
anacor: yet another ca package
...rd scaling, Benz?cri
scaling, Goodman scaling, row-centroid, or column-centroid
scaling.
The summary method writes out a table with the chi-square
(inertia) decomposition, it also writes out the singular
values, and their asymptotic standard errors under multinomial
sampling. Plots of the category quantifications (row scores
and column scores) can be made optionally with asymptotic
confidence ellipses, again based on multinomial sampling.
The package contain various utilities to switch data formats,
in particular to transform data frames to Burt matrices,
to indicator matrices, and even to fuzzy in...
2009 Aug 13
0
dcemri: A package for medical image analysis
...a the q-form or s-form
codes in NIfTI.
Software development is currently under SourceForge via
http://www.dcemri.org
A mailing list has been established and feedback is appreciated.
Functionality includes:
Motion correction and co-registration via "fast template matching"
T1 quantification via multiple flip-angle acquistions (inversion recovery
coming soon!)
Conversion to gadolinium contrast agent concentration
Parametric models for the arterial input function (AIF), both
literature-based (Tofts-Kermode and Fritz-Hansen) and data-adaptive.
Kinetic parameter estimation using...
2005 Nov 06
0
R for Psychometrics
...espondence analysis, nonlinear principal
component analysis, nonlinear multiset canonical
correlation analysis. Implements everything in Gifi (1990)
or SPSS Categories, and then some. Status: done.
-- aspect package (optimizing functions of correlation
matrices over transformations/quantifications of the variables --
functions implemented are sums of eigenvalues, determinants,
multiple
correlations, power sums). Status: done.
-- optim package (miscellaneous optimization routines -- currently has
pooled-adjacent-violaters for monotone regression and
the hildreth-des...
2018 Mar 21
0
Error in GDCprepare step of TCGAbiolinks
...s working fine.
below is the complete R code i am usign with the corresponding error,
library(TCGAbiolinks)
query.exp <- GDCquery(project = "TCGA-LUAD",
data.category = "Transcriptome Profiling",
data.type = "Gene Expression Quantification",
workflow.type = "HTSeq - Counts",
experimental.strategy = "RNA-Seq")
query_load <- GDCdownload(query.exp)
luad.exp <- GDCprepare(query = query.exp, save = TRUE, save.filename =
"TCGA_LUAD_Exp.rda",...
2010 Sep 15
0
Biostatistician position, Austria
...d develop diagnostic biomarkers, as well as
biomarkers for the characterization of disease models and drug effects,
including side effects.
Essential functions
* Analyzing omics data and integration of Metabolomics with other omics
data- selection of likely metabolite, protein and RNA targets for
quantification.
* Contributing to presentations, patent applications, scientific
publications and reporting on project funding.
Requirements
* Candidate can work independently and is highly motivated, creative and
result-oriented.
* Problem solving skills and strong team orientation are fundamental.
* Go...
2004 Aug 18
6
Report of collision-generation with MD5
...the MD5 algorithm, which is often
used with digital signatures...."
There's more in the article cited above.
Peace,
david
--
David H. Wolfskill david@catwhisker.org
Evidence of curmudgeonliness: becoming irritated with the usage of the
word "speed" in contexts referring to quantification of network
performance, as opposed to "bandwidth" or "latency."
2008 Jul 23
3
Quantitative analysis of non-standard scatter plots.
...lyse scatter plots and
quantitatively differentiate between them. Since this is best demonstrated
by a figure, I have attached one with 4 subfigures (a)-(d). Qualitatively
(and I hope you would agree with me), sub-figures (a), (b), and (d) seem to
represent uniform 2d scatters. It is hard for me to quantify it, but it
seems as if the envelopes (max values of y-axis) are independent of the
values of the x-axis. Sub-figure (c), on the other hand, exhibits a
different behaviour, as the envelope seems to expand as the x-values
increase (at least till some threshold, and with the exception of a single
out...