search for: noisy

While working on 'random walk' applications, I got interested in optimizing noisy objective functions. As an (artificial) example, the following is the Rosenbrock function, where Gaussian noise of standard deviation `sd = 0.01` is added to the function value. fn <- function(x) (1+rnorm(1, sd=0.01)) * adagio::fnRosenbrock(x) To smooth out the noise, define...

...int process version of a sinewave (maybe there's a better way): p<-amp*cos(2*pi*freq*(1:n)/n ) + 0.5 as.numeric(runif(1:n)<p) I get something like this: 1 o oo oo o o ooooo o 0 ooo o o o o o ooo ooo In case it's not obvious, this is a noisy version of 1 ooooooo ooooooo 0 ooooooo ooooooo I was wondering if anyone can suggest a way to create a version where I get 0s, 1s, and 2s something like a noisy version of this: 2 oooooooo oooooo 1 ooooo...

Dear Michael, One key is adjustment of nls optimizer tolerance. I notice it has to be higher than usual, but, I recovered your noisy "known" parameter values with an error of K1 (-7%) and k1 (-6%): #### Miller problem with Dalgaard modifications ## Linares 1/22/2004 ## Solution 1 nls(noisy ~ lsoda(xstart, time, one.compartment.model, c(K1=K1, k2=k2))[,2], data=C1.lsoda, start=list(K1=0.3, k2=0.7...

...ere a function or a package able to take the median value of y for an interval of x (x +/- a defined value) to plot nice graph (at least a better one) ? Thanks in advance, Have a nice week-end, Ptit Bleu. -- View this message in context: http://www.nabble.com/Best-way-to-select-good-points-in-a-noisy-signal---tp18773387p18773387.html Sent from the R help mailing list archive at Nabble.com.

...-c 1) > * Only run the programs that are marked as a benchmark; some of the tests in the test-suite are not intended to be used as a benchmark (--benchmarking-only) > * Make sure each program gets run multiple times, so that LNT has a higher chance of recognizing which programs are inherently noisy (--multisample=3) This as well, with usually 5 multisamples. I’d add to this good list: disable frequency scaling / turbo boost. In case of thermal throttling it can skew the results. — Mehdi > > I hope this is the kind of answer you were looking for? > Do the above measures reduce...

Hallo, my noisy time series represent a fading signal comprising of long enough parts with a simple trend inside of each such a part. Transition from one part into another is always a non-smooth and very sharp/acute. In other words I have a piecewise polynomial noisy curve asymptotically converging to the biased c...

Hi, I'm trying to run the benchmark suite: http://llvm.org/docs/TestingGuide.html#test-suite-quickstart I'm doing it the lnt way, as described at: http://llvm.org/docs/lnt/quickstart.html I don't know what to expect but the results seems to be quite noisy and unstable. E.g I've done two runs on two different commits that only differ by a space in CODE_OWNERS.txt on my 12 core ubuntu 14.04 machine with: lnt runtest nt --sandbox SANDBOX --cc <path-to-my-clang> --test-suite /data/repo/test-suite -j 8 And then I get the following top e...

...hat I need to smooth the data (x,y) while taking into account the fact that the y's have been estimated at a previous stage and thus already come with a variance. So, if I smooth the data I somehow need to take into account *two errors*, one from the smoothing and the other from the already noisy data that I start off with. Does anyone have any idea how to do this? thanks, matt.

...ly run the programs that are marked as a benchmark; some of the tests > in the test-suite are not intended to be used as a benchmark > (--benchmarking-only) > * Make sure each program gets run multiple times, so that LNT has a higher > chance of recognizing which programs are inherently noisy (--multisample=3) > > I hope this is the kind of answer you were looking for? > Do the above measures reduce the noisiness to acceptable levels for your > setup? > > Thanks, > > Kristof > > > > On 27 Feb 2017, at 09:46, Mikael Holmén via llvm-dev < > llvm-d...

...nd it's not a problem anyway. The number behaves just right. * Remove the $((${size}+10)). It's not needed, and it's a lie. In fact, the actual test FAILs (369513 with -5 vs 369516 with -6), but this +10 hides it! Two more things not addressed in this diff: 1. The input test file (noisy-sine.wav) needs to be present already, probably as an artifact of some previous test. So ./test_compression does not work standalone. I am leaving this till I figure out the right uniform way for all the test* to have their test files generated. 2. The 'wc -c' needs to actually read the wh...

...ELF output etc. > > Are you suggesting this behavior from Clang or from LLVM? I think it would be a bad thing for LLVM to produce this warning: there isn’t a precedent for this, and it breaks the library-based design goals. Having clang produce a warning could be done, but it would be very noisy (one warning for every .c file in a build) and I’m not sure how much value it provides. That's a good point. It felt like there may be an opportunity to educate users that they're enabling a feature that might mutate from release to release, but hopefully the "experimental" strin...

Anyone have some recommended equipment for alerting people to calls in a noisy environment? I have Polycom IP550 phones set up in some really noisy environments - our mine hoists - and they tend to drown out the ringers. I'm using Clarity WR100s now. They're analog devices, attached to Linksys PAP2T ATAs as part of a call group to get a loud (advertised as 95dB) ri...

...r firmware engineers thinks that this looks a lot like PWM inversion. For some SKUs, the interpretation of the PWM duty cycle is inverted. That would probably make it *very* difficult to find a sensible algorithm that covered all the SKUs, given that some are inverted and others are not. For the noisy GPUs, a very useful experiment would be to try inverting it, like this: pwmDutyCycle = pwmPeriod - pwmDutyCycle; ...and then see if fan control starts behaving closer to how you've actually programmed it. Would that be easy enough to try out? It should help narrow down the problem at leas...

...peex codec for my diploma thesis on a BF-533 Blackfin under > uCLinux (2005R3 RC3 release). I successfully compiled the Speex (1.1.11-svn) > and I can encode/decode wav-files on my STAMP-board using the speexenc/speexdec > sample apps. But I encountered that the decoded file sounds strange/noisy, when > compiling with "--enable-blackfin-asm" + "--enable-fixed-point", while it was > comparable to a PC/x86/Linux encoded/decoded file, when Speex was compiled with > "--enable-fixed-point" only. The strange sound seems to occur only in 16 kHz > WB-mode,...

For those of you using Dovecot on Fedora, the noisy syslog is fixed: https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=124979 I'd suggest getting the pam SRPM from Rawhide (Fedora development tree) and rebuilding, to minimize dependency issues. (I haven't tried this yet. I'm just forwarding the bug-closing report.)

https://bugzilla.mindrot.org/show_bug.cgi?id=1431 Summary: ssh-copy-id -i .ssh/*.pub hostname is noisy Classification: Unclassified Product: Portable OpenSSH Version: 4.7p1 Platform: Other OS/Version: Linux Status: NEW Severity: minor Priority: P2 Component: Miscellaneous AssignedTo: bitbucket at mindrot.org...

When I call in from an outside POTS line to a Zap channel, and the call ends, it seems like the hangups are very "sloppy." I see Asterisk give the hangup command, but on my phone there's lots of clicks and the line acts like it's staying open for several seconds, then I hear a phone ringing sound followed by "If you'd like to make a call, please hang up and try

When a Snom 200 (v2.1l) calls a C7960 (v4.4), both using g711u as default, the conversation is extremely noisy from the Snom to the Cisco, but clear in the reverse direction. Using a sniffer, I see packets from the Snom to the Cisco of 87 bytes and Cisco to Snom of 214 bytes. Asterisk is CVS from Saturday. The communications between the two was working fine on Saturday, however something has changed to cau...

Dear all, Currently I am using asterisk 1.4.23.1. . Over the period of 1 week, the memory in use starts off at 50% and continues to climb until it hits 99%. When memory usage ratio become 50% or more, the quality of calls become extremely noisy. The call quality goes back to being perfect once I reboot the machine, but I was to try and avoid having to reboot the machine every week. the following is the memory status during the usage ratio of memory approx. 50% or more which is in /proc/{process id of asterisk}/smaps file : 09001000-7eb...

First of all, sorry about my crossposting this, but tarkin-dev I think is thinly populated, and with all those people experienced in DSP in vorbis-dev I figured it'd be a good idea. On with the question: given an image and a pair of coordinates, how can I calculate some sort of noisiness value? If you create an image with two squares adjacent to one another, and you fill both of them with the