search for: asymmetry

Hello everybody, I'm studying descriptive statistics with R and I want to know how to calculate the asymmetry and kurtosis coefficients of a sample using R. I'll appreciate some help. Thanx, Talita Perciano Costa Leite Graduanda em Ci?ncia da Computa??o Universidade Federal de Alagoas - UFAL Departamento de Tecnologia da Informa??o - TCI Constru??o de Conhecimento por Agrupamento de Dados - CoCADa

Open Letter to Developers, Is there any way you can cut through the mob scene at Homeland Defense with a powerful new encryption/decryption formula? The government cryptography bunch are stuck in symmetry and asymmetry and are deaf/dumb/blind to supersymmetry. When it's so easy to line up a supersymmetrical hypercube fractal-to-fractal, pair-to-pair, quantum-to-quantum and slice through all the mathematical protocols using set-to-set precision, it's clear that perfect internet or banking security can b...

Hi all, Has anyone tested for FA in R? I need to seperate out the variance due to measurement error from variation between individuals (following Palmer & Strobeck 1986). Andy Higginson Animal Behaviour and Ecology Research Group School of Biology University of Nottingham NG7 2RD U.K. This message has been checked for viruses but the contents of an attachment may still contain

...qrt (inside visitFPTrunc), and a bunch of optimizations inside SimplifyLibCalls that apply only to the sqrt libm call, and not to the intrinsics. The result, among other things, is PR17758, where fast-math mode actually produces slower code for non-vectorized sqrt calls. Some questions: - Is the asymmetry between optimizations performed on libm calls and their corresponding llvm.<libm function> intrinsics intentional, or just due to a lack of motivation? - Even if unintentional, is this asymmetry in any way desirable (for sqrt in particular, or in general)? - I can refactor all existing op...

...Trunc), and a bunch of optimizations inside SimplifyLibCalls that apply only to the sqrt libm call, and not to the intrinsics. The result, among other things, is PR17758, where fast-math mode actually produces slower code for non-vectorized sqrt calls. > > Some questions: > > - Is the asymmetry between optimizations performed on libm calls and their corresponding llvm.<libm function> intrinsics intentional, or just due to a lack of motivation? > > - Even if unintentional, is this asymmetry in any way desirable (for sqrt in particular, or in general)? > > - I can refa...

Is there a good reason why arguments to 'attach' and 'detach' differ so much? Yes, I know this is the documented behaviour, it just seems to violate the principle of least surprise. Examples: file = "foo.RData" df = data.frame(x=1:10,y=1:10) attach(file) # attaches the RData file 'foo.RData' attach(df) # attaches the object df Not surprising in an

On Nov 11, 2013, at 10:44 PM, Hal Finkel <hfinkel at anl.gov> wrote: >> "Unlike sqrt in libm, however, llvm.sqrt has undefined behavior for >> ..." >> >> to "... produces an undefined value", with a link back to >> ##undefined-values. > > I'm not sure that helps, because it will prevents sqrt + -fno-math-errno (a readnone sqrt)

...fyLibCalls that apply only to the sqrt libm call, and not to > > the intrinsics. The result, among other things, is PR17758, where > > fast-math mode actually produces slower code for non-vectorized > > sqrt calls. > > > > Some questions: > > > > - Is the asymmetry between optimizations performed on libm calls > > and their corresponding llvm.<libm function> intrinsics > > intentional, or just due to a lack of motivation? > > > > - Even if unintentional, is this asymmetry in any way desirable > > (for sqrt in partic...

On Nov 11, 2013, at 9:30 PM, Hal Finkel <hfinkel at anl.gov> wrote: > ----- Original Message ----- >> Hi Hal, all. >> >> I'm not sure why llvm.sqrt is 'special'. Maybe because there is a >> SSE >> packed sqrt instruction (SQRTPS) but not e.g. a packed sin >> instruction >> AFAIK. > > This seems relevant:

Hi all, Does anyone have an R implementation of the queplot (K.?M. Goldberg and B.?Iglewicz. Bivariate extensions of the boxplot. Technometrics, 34(3):pp. 307?320, 1992)? I'm struggling with the estimation of the asymmetry parameters. Hadley -- Assistant Professor / Dobelman Family Junior Chair Department of Statistics / Rice University http://had.co.nz/

...relation is possible on all comparison stage. The last one is possible, if for each comparison stage we implement has next properties: * reflexivity (a <= a, a == a, a >= a), * antisymmetry (if a <= b and b <= a then a == b), * transitivity (a <= b and b <= c, then a <= c) * asymmetry (if a < b, then a > b or a == b). Once we have defined order relation we can store all the functions in binary tree and perform lookup in O(log(N)) time. This post has two attachments: 1. The patch, that has implementation of this idea. 2. The MergeFunctions pass detailed description, with...

----- Original Message ----- > > On Nov 11, 2013, at 9:30 PM, Hal Finkel <hfinkel at anl.gov> wrote: > > > ----- Original Message ----- > >> Hi Hal, all. > >> > >> I'm not sure why llvm.sqrt is 'special'. Maybe because there is a > >> SSE > >> packed sqrt instruction (SQRTPS) but not e.g. a packed sin > >>

Hi If I have a <- Inf + 1i then Re(a) is Inf, and Im(a) is 1, as expected. But if b <- 1 + Inf * 1i, then Im(b) = Inf , as expected, but Re(b) = NaN, which I didn't expect. Why this asymmetry? How to define an object with Re(b)=1, Im(b)=Inf? -- Robin Hankin Uncertainty Analyst Southampton Oceanography Centre European Way, Southampton SO14 3ZH, UK tel 023-8059-7743

...ctions metabin, metacont, metacor, metagen, metaprop: - new arguments: - hakn (Hartung-Knapp method) - method.tau (estimation method for tau-squared) - tau.preset (fixed value for tau) - TE.tau (prespecified treatment effect to estimate tau) - method.bias (test for funnel plot asymmetry used in metabias) - label.left (Label on left side of forest plot, new argument in functions metabin, metacont, and metagen) - label.right (Label on right side of forest plot, new argument in functions metabin, metacont, and metagen) - warn (print wa...

...ctions metabin, metacont, metacor, metagen, metaprop: - new arguments: - hakn (Hartung-Knapp method) - method.tau (estimation method for tau-squared) - tau.preset (fixed value for tau) - TE.tau (prespecified treatment effect to estimate tau) - method.bias (test for funnel plot asymmetry used in metabias) - label.left (Label on left side of forest plot, new argument in functions metabin, metacont, and metagen) - label.right (Label on right side of forest plot, new argument in functions metabin, metacont, and metagen) - warn (print wa...

...ltiply this by sqrt(12) to have for the parameter of volatility of the skew student : 3*sqrt(12)*sqrt(dt) with "dt" the time increment parameter (1/12 for monthly data, 1/261 for daily data, and so on). Do I do the same thing (and what is the multiplicative factor ?) for the parameters of asymmetry and the degree of freedom ? Thanks a lot ! Best regards Pierre. [[alternative HTML version deleted]]

...e more deceptive, because if newcomers think {} is LLVM's spelling for C's void, they might be tempted to use {}* for C's void*, and nothing will stop them except mysterious bugs if they do arithmetic. On the purity side, replacing void with {} has the side effect of emphasising an odd asymmetry in the language. Conisder the return types of functions returning 0, 1, 2, and 3 etc. values: 0: {} 1: i32 2: {i32,i32} 3: {i32,i32,i32} etc. Why is 1 special-cased? Argument lists don't have a corresponding special case, after all. Dan

...// cross reference case. It is possible for self-reference only. if (V1 == F1) { if (V2 == F2) return 0; return -1; } if (V2 == F2) { if (V1 == F1) return 0; return 1; } Can't this break asymmetry? Doesn't breaking the ordering relation cause a correctness problem? I.e., what am I missing here? I also have a few low-level comments (and nitpicks): - The comments at the top of the file don't match the new implementation! - Lots of strange tabbing after your changes. E.g.:...

Hi all, I used netperf to measure throughput between dom0 & domU. The throughput between dom0 -> domU was 256.00 Mb/sec domU -> dom0 was 401.15 Mb/sec. The throughput between dom0 & domU seems to be very asymmetry. To my surprise the throughput between domU -> dom0 is more. The value which I specified are consistent values. Is there any reason for throughput being more between domU -> dom0? Please share if you have any information regarding this. Thanks in advance, Suresh. Please do not print th...

...ping track of state (hence tha name stateful firewall). Tcpdump on your servers /other/ NICs and you?ll see the tftp traffic leaving your server on some other NIC (probably on with the default route). The upstream firewall will then block the tftp response if it never saw the tftp request (due to asymmetry).