search for: theoret

Displaying 20 results from an estimated 3364 matches for "theoret".

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2011 Jun 02
4
[Plea to the R Gods] Theoretical and Empirical CDFs
...following code was used: > plot(ecdf(mut), do.points=FALSE, verticals=TRUE, xlim=range(mut, non), > col="red") > plot(ecdf(non), do.points=FALSE, verticals=TRUE, add=TRUE, col="blue") But what I need instead are smooth curves, similar to ones that are generated from a theoretical cdf (attachment 2). I have looked at so many threads; one suggestion to someone else was to use library(fitdistplot) and look for distributions that may fit (e.g. weibull). But I could really use guidance before spending additional time on this. Thank you! -TW -- View this message in cont...
2007 Feb 08
1
the plotting position of theoretical quantile for qqnorm
Hello, I have a doubt about the plotting position of the theoretical quantile for the qqnorm command in R. Let F be the theoretical distribution of Y, we observed a sample of size n, y1,y2, ..., yn. We then sort it and comspare these empirical quantiles to the expected ones from F. For the plotting poition, there are several options: 1. i/(n+1) 2. (i-.375)/(n+...
2012 Dec 19
1
Theoretical confidence regions for any non-symmetric bivariate statistical distributions
Respected R Users, I looking for help with generating theoretical confidence regions for any of non-symmetric bivariate statistical distributions (bivariate Chi-squared distribution<Wishart distribution>, bivariate F-distribution, or any of the others). I want to to used it as a benchmark to compare a few strategies constructing confidence regions for n...
2005 Jun 08
1
Fitting Theoretical Distributions to Daily Rainfall Data
Dear List Members, I need a bit help about fitting some theoretical distributions (such as geometric, exponential, lognormal or weibull distribution) to the following *dry spell*, *wet spell*, *cycles (Wet-Dry or Dry-Wet)* from my meteorological (daily rainfall) data http://www.angelfire.com/ab5/get5/R.rainfall.txt only for rainy seasen (july - september) of 14...
2005 Nov 23
3
[LLVMdev] llvm-ranlib: Bus Error in regressions + fix
...code. >> Yup. If you use the sys::Path class to do the "unlink" >> (removeFromDisk) then the platform differences should be accounted >> for. Please don't put the direct unlink call into ArchiveWriter.cpp. > > So this comment means that I should attempt to theoretically support > Windows, and close the current archive file before updating it? If you use sys::Path, it is not "theoretically" supported, it is supported. To remove a file, use sys::Path::removeFromDisk, not unlink(2). > I'll remove the stringstream, but this means that I...
2005 Nov 24
0
[LLVMdev] llvm-ranlib: Bus Error in regressions + fix
On Nov 23, 2005, at 18:17, Reid Spencer wrote: >> So this comment means that I should attempt to theoretically support >> Windows, and close the current archive file before updating it? > If you use sys::Path, it is not "theoretically" supported, it is > supported. Well, except of course that it isn't currently possible to build LLVM on Windows. Hence this is a somewhat t...
2011 Oct 06
2
KS test and theoretical distribution
...o-sided ok I expected that, but: > ks.test(runif(100), "runif") One-sample Kolmogorov-Smirnov test data: runif(100) D = 0.9106, p-value < 2.2e-16 alternative hypothesis: two-sided How come? -- View this message in context: http://r.789695.n4.nabble.com/KS-test-and-theoretical-distribution-tp3878640p3878640.html Sent from the R help mailing list archive at Nabble.com.
2007 Oct 17
9
plain text stories: motivation number 27
This is mostly theoretical, but ... I''m starting to use lighthouse (http://llighthouseapp.com) for my projects at work. I''m organizing iterations as milestones and stories as tickets tagged to a milestone. Lighthouse offers an API so that you can write access the data in your account and write apps to...
2008 Feb 02
1
Ruby++ FFI (theoretical)
Hi all, How does this look as a potential FFI for our theoretical Ruby++ ? I''m not sure how to do mixins, though. Some sort of special directive? Or just add it to inheritance chain? Anyway, this is just a rough prototype. No attempt at an actual implementation yet. Regards, Dan // foo.h - Function prototypes #define _FOO_H_ using namespace ru...
2014 Feb 13
2
[PATCH net v2] vhost: fix a theoretical race in device cleanup
...nize on release. Since callbacks are always invoked from bh, synchronize_rcu_bh seems enough and will help release complete a bit faster. Signed-off-by: Michael S. Tsirkin <mst at redhat.com> --- This is was previously posted as part of patch series, but it's an independent fix really. Theoretical race so not needed for stable I think. changes from v1: fixed typo in commit log drivers/vhost/net.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/vhost/net.c b/drivers/vhost/net.c index b12176f..f1be80d 100644 --- a/drivers/vhost/net.c +++ b/drivers/vhost/net.c @@ -308,...
2014 Feb 13
2
[PATCH net v2] vhost: fix a theoretical race in device cleanup
...nize on release. Since callbacks are always invoked from bh, synchronize_rcu_bh seems enough and will help release complete a bit faster. Signed-off-by: Michael S. Tsirkin <mst at redhat.com> --- This is was previously posted as part of patch series, but it's an independent fix really. Theoretical race so not needed for stable I think. changes from v1: fixed typo in commit log drivers/vhost/net.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/vhost/net.c b/drivers/vhost/net.c index b12176f..f1be80d 100644 --- a/drivers/vhost/net.c +++ b/drivers/vhost/net.c @@ -308,...
2006 May 25
2
qqmath - Lattice error
Hi, Don't have a clue what teh following error message generated by this function call: qqmath( ~val|ind,data = xx ,distribution = function(p){ qt(p,df=20)} ,ylab="Sample Quatinles" ,xlab="Theoretical Quantiles" ,panel=function(x,y) { panel.qqmathline(y , distribution=function(p) qt(p,df=20) ,col=2) panel.qqmath(x, y , distribution=function(p) qt(p,df=20) ,pch...
2008 Aug 15
1
[LLVMdev] Theoretical grounds of IR.
...some time. It'd be great if some one could give some pointers. Given a specific target, and a set of rules that define what is optimal code for that target, can it be proven that the LLVM IR provides the necessary and sufficient abstractions from which optimal code can be generated? Is there a theoretical basis for the constitution of the IR? If I "raise" optimized assembly language code into LLVM IR, is it possible (thoeretically, provably) to generate equal, or more, optimal assembly code from it? Wouldn't this involve some sort of formal representation of the target's arch...
2004 Jan 15
3
how to overlap plots
Dear R experts: Can you help me to overlap a histogram and theoretical density curve of poison distribution? for example data like this: The numbers of sanils found in each of 100 sampling quadrats in an area were as follows: number of snails, r 0 1 2 3 4 5 8 15 f=frequency of r 69 18 7 2 1 1 1 1 apparently this is not Poison but near to Poison, How to overla...
2012 Oct 30
6
standard error for quantile
Dear all I have a question about quantiles standard error, partly practical partly theoretical. I know that x<-rlnorm(100000, log(200), log(2)) quantile(x, c(.10,.5,.99)) computes quantiles but I would like to know if there is any function to find standard error (or any dispersion measure) of these estimated values. And here is a theoretical one. I feel that when I compute median f...
2019 Jun 11
10
[RFC] Coding Standards: "prefer `int` for regular arithmetic, use `unsigned` only for bitmask and when you intend to rely on wrapping behavior."
...vm.org>: > > I'm personally against changing everything to signed integers. To me, this is an example of making code strictly less readable and more confusing in order to fight deficiencies in the language standard. I get the problem that it's solving, but I view this as mostly a theoretical problem, whereas being able to read the code and have it make sense is a practical problem that we must face on a daily basis. If you change everything to signed integers, you may catch a real problem with it a couple of times a year. And by "real problem" here, I'm talking abou...
2009 Mar 27
0
[LLVMdev] Applying for Hi There I am a PhD student of Computer Scince at Simon Fraser University (http://www.cs.sfu.ca) interested in applying to GSoC. My PhD is focused on theoretical computer science, but since Sep. 2008 I have started working on
Dear all I am a PhD student of Computer Scince at Simon Fraser University ( http://www.cs.sfu.ca) interested in applying to GSoC. My PhD is focused on theoretical computer science, but since Sep. 2008 I have started working on Software projects again. Currently I am working in COSTAR lab on a high performance regular expression engine based on Parallel bit streams technology. A considerable part of this project is optimal register allocation and I have g...
2010 Mar 02
0
[LLVMdev] Possible SelectionDAG Bug
...doesn't matter where UI points at the call to AddModifiedNodeToCSEMaps. > The fact that AddModifiedNodeToCSEMaps can recursively call > ReplaceAllUsesOf means that we can potentially delete the node > out from under UI. Ok, I think I've finally managed to draw on my whiteboard a theoretical situation which could have a problem like this. The attached patch should theoretically fix this bug, though I have no way to confirm this right now. Does it fix the bug you're seeing? Dan -------------- next part -------------- A non-text attachment was scrubbed... Name: rauw.patch Type...
2017 Mar 10
0
Theoretical limit of the number of simultaneous sources in Icecast?
I had an academic question for the list. What is the theoretical limit of the number of simultaneous sources in Icecast? What limits the number of sources that can run? Is it purely a function of the resources on the server or is there any inherit limitations? And given enough resources would extreme number of sources like 10,000 - 100,000 be exp...
2009 Jun 07
1
One rather theoretical question about fitting algorithm
Hi, What I'm trying to achieve is very fast algorithm for fitting logistic regression model. I have to estimate regression coeficients using about 10k observations. Once I have coefficients estimated, new 100 rows of data becomes available.... Now I need to reestimate coeficients using 100 newly arrived observations and removing 100 oldest observations. So, my question is would it be