search for: unscientific

Hi all, I'm doing a very informal and unscientific poll: which kernel do you use on your CentOS machines? Not which version of the CentOS kernel, but which repository. Here are some examples I can think of off the top of my head: ==CentOS stock ==build own from CentOS SRPMs ==kernel-ml (from ELRepo) ==kernel-lt (from ELRepo) ==OpenVZ kernel ==bu...

If I had my very own sweaty, wind-up Ballmer (http://www.ntk.net/ballmer/mirrors.html warning: mind-scarring video), that is what he would be saying: "Relationships, relationships, relationships!!" My unscientific polling of the traffic in #rubyonrails and here is that, second to deployment issues, this is the bigges FAQ for Rails: how to do relationship x in ActiveRecord. There seems to be a lack of definitive and clear documentation for how to handle various kinds of relationships with ActiveRecord. So, s...

...itself wouldn''t want to restrict itself to a particular Ruby interpreter, but I don''t see any harm in an add-on library that optimizes it for MRI. Am I missing anything? * How widely applicable is it? The ActiveSupport::Inflector singleton provides some *very* low-hanging fruit - unscientific benchmarking is suggesting 10x speed improvements in #underscore, #camel_case, etc. But native implementations are probably only useful for methods that perform non-trivial work that has no direct relation to the Ruby space - string manipulation and arithmetic being the obvious candidates. Is it wo...

Hi all. Any reason not to turn these on if the system supports them? They're cheap but not free (a bit under 1% slower to run the complete regress suite in a completely unscientific test). They're based on info from these places: https://wiki.ubuntu.com/ToolChain/CompilerFlags http://wiki.debian.org/Hardening http://www.gentoo.org/proj/en/hardened/gnu-stack.xml and I've attempted to take the ones that make sense for openssh. >From my reading, -fPIE should be suffi...

Hello, I'm analysing reaction time data from a linguistic experiment (a variant of a lexical decision task). To ascertain that the data was normally distributed, I used *shapiro.test *for each participant (see commands below), but only one out of 21 returns a p value above p.0 05. > f = function(dfr) return(shapiro.test(dfr$Target.RTinv)$p.value) > p = as.vector(by(newdat,

I am in a holding pattern while client decides upon changes and so I am working some things out internally so it seems to me that indexing frequently searched table fields might be useful. I am using postgres and via postgres, I have added an index to one of my tables whose index is the same name as the column name. The ''find'' screen I am using this to judge populates a number

Dear R-Aficionados: I realize that no random number generator is perfect, so what I report below may be a result of that simple fact. However, if I have made an error in my thinking I would greatly appreciate being corrected. I wish to illustrate the behavior of small samples (n=10) and so generate 100,000 of them. n.samples <- 1000000 sample.size = 10 p <- 0.0001 z.normal <- qnorm(p)

Hi I just stumbled upon this paper. While i just skimmed over it it seems as if the authors say that their algorithm is more efficient than the llvm 2.3 algorithm? So i thought that might be interesting? http://pp.info.uni-karlsruhe.de/uploads/publikationen/braun09cc.pdf Disclaimer: I have no affiliation with the authors and stumbled in a slightly unrelated search over this paper. ST

...onen/braun09cc.pdf Don't trust it. The abstract clearly states they're counting the number of dynamic spills. That has almost nothing to do with performance. Someone would have to reproduce their experiment to verify that performance indeed improves. And alas, our field is notoriously unscientific in this respect. Reproducability of experiments is nonexistant. -Dave

> While > package names are not functions, using dots in package names > encourages the use of dots in functions, a dangerous practice. "dangerous"...? I can't understand the necessity of RStudio and Tiny-Verse affiliated persons to repeatedly use subjective and unscientific phrasing. Elegant, Advanced, Dangerous... At UseR, there was even "Advanced Use of your Favorite IDE". This is not science. This is marketing. There's nothing dangerous about it other than your belief that it's dangerous. I note that many functions in the stats package use dots...

Hello All, I realize that this is all highly unscientific and probably unprofessional as well. Still, I couldn't resist the urge. I ripped track 6 (prelude) from Yanni's "Tribute" album and encoded it with the latest versions of lame and oggenc. I present below the command line I used for both encodes: time oggenc -a 'Yanni' -t...

Hello All, I realize that this is all highly unscientific and probably unprofessional as well. Still, I couldn't resist the urge. I ripped track 6 (prelude) from Yanni's "Tribute" album and encoded it with the latest versions of lame and oggenc. I present below the command line I used for both encodes: time oggenc -a 'Yanni' -t...

Hi all, Have trouble encoding / playing back OGG using WinAmp + plugin. I encoded the files from .WAV with Ogg drop RC2. Seems to be ok. When I try and play them back though I get very very weird sound effects (some kind of "wobbling", some bass frequencies that are usually in the background seem to get more emphasised and they seem to have some kind of strange echo / reverb to it

Hello, While experimenting with the sqlite backend, I noticed a big vacuum wrt its use for a quota dict. This is thus an opportunity to share a solution I managed to devise after some trials and errors and a (very quick and unscientific) look at the code. And also the opportunity to ask the community to check for possible flaws. Yes, nothing comes for free... ;-) TIA, Axel This is the SQL for creating the database or for adding needed table/trigger to an existing database (with many comments and few "active" lines):...

I've seen this problem mentioned many times in the various FAQs and How-Tos on the Internet, but none of the solutions presented therein have worked for me. [global] workgroup = UNIX server string = OPTIMUS interfaces = eth0 log level = 1 log file = /var/log/samba/%m.log max log size = 0 # socket options = TCP_NODELAY

I have concluded that it is impossible to get this background process stable. I am out of ideas and could really use some help. Here is what I have: 50 workers, just running an infinite loop that constantly calls save! on a model. Keep in mind this is just for testing purposes. I catch all exceptions and put them in the log. I am tried setting allow_concurrency to true and false. Neither

...aken. Note that it does not drop any frames, so it will render the same amount of stuff, no matter how fast/slow it is. You run it like this: swfdec-directfb-bench [OPTIONS] file.swf and it outputs how long it took to render all images of the first 10 seconds (unless changed via --time). As a total unscientific test, I took Mariorush [3] and tested it with 3 different options both with the old (first result) and Claudio's rewritten (second result) cairo-directfb backend. Results were as follows: 300s - 162s - normal playback 300s - 162s - playback with environment variable CAIRO_DIRECTFB_NO_ACCEL set...

Martin, Thank you for discussing this amongst R-core and for detailing the R-core discussion here. Some specific examples where having underscores available would have been useful. 1. My primerTree package (2013) was originally primer_tree, but I had to change the name to camelCase to comply with the check requirements. Using camelCase in the package name makes reading code jarring, as the

John, I haven't done any direct performance testing, although I am planning on figuring that out now. (BTW, how is performance testing ran?) However, I can say that since converting over to the Samba PDC/File Server that the file transfer performance just feels much faster. Regards, Robert Adkins II IT Manager/Buyer Impel Industries, Inc. Ph. 586-254-5800 Fx. 586-254-5804

...me C++ refactoring tasks. <http://article.gmane.org/gmane.comp.compilers.clang.devel/34050> The mailing list is overwhelmingly in favour of using LibTooling, though it does have the downside that nobody has produced Python bindings to it yet. ## LLVM commits Warning: this is an opinionated, unscientific highlighting of certain LLVM commits. I may have missed your favourite change - apologies. * An initial ASM parser was added to the SPARC backend <http://llvm-reviews.chandlerc.com/rL198484>. The backend also learned to handle atomics loads/stores <http://llvm-reviews.chandlerc.com/rL1982...