Displaying 5 results from an estimated 5 matches for "fabc".
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2006 May 10
1
pop3 problem with small messages with no Subject: and no To: headers
...@r
10:51:35.470688 IP customer.60181 > mailserver.pop3: F 48:48(0) ack 2980
win 64188
0x0000: 4500 0028 d329 4000 7106 fc25 4624 16a1 E..(.)@.q..%F$..
0x0010: ceaa 0f11 eb15 006e 7ee7 2a9b d846 034f .......n~.*..F.O
0x0020: 5011 fabc 09fa 0000 0000 0000 0000 P.............
10:51:35.470997 IP mailserver.pop3 > customer.60181: F 2980:2980(0) ack
49 win 5840
0x0000: 4500 0028 ca0f 4000 4006 3640 ceaa 0f11 E..(.. at .@.6 at ....
0x0010: 4624 16a1 006e eb15 d846 034f 7ee7 2a9c F$...n...F.O~.*....
2007 Oct 18
0
[R} Getting 'tilting' confidence intervals in R
...boot" package.
But I can't figure out how to use tilt.boot() to get the "tilting"
confidence interval. Here's a program snippet:
g = rgamma(N,shape=2,scale=3) #Generate a sample of N random deviates
varf = function (x,i) { var(x[i]) }
b = boot(g, varf, R=1000)
boot.ci(b)
fabc = function (x, w) { sum(x^2*w)/sum(w)-(sum(x*w)/sum(w))^2 } #wgt
average (biased) variance
abc.ci(g, fabc) #ABC method confidence interval
bt = tilt.boot(g, varf, R=c(1000,1000,1000))
The bt object doesn't have a confidence interval method or property,
even though alpha=c(.025, .975) is a d...
2007 Oct 18
0
Getting 'tilting' confidence intervals in R
...boot" package.
But I can't figure out how to use tilt.boot() to get the "tilting"
confidence interval. Here's a program snippet:
g = rgamma(N,shape=2,scale=3) #Generate a sample of N random deviates
varf = function (x,i) { var(x[i]) }
b = boot(g, varf, R=1000)
boot.ci(b)
fabc = function (x, w) { sum(x^2*w)/sum(w)-(sum(x*w)/sum(w))^2 } #wgt
average (biased) variance
abc.ci(g, fabc) #ABC method confidence interval
bt = tilt.boot(g, varf, R=c(1000,1000,1000))
The bt object doesn't have a confidence interval method or property,
even though alpha=c(.025, .975) is a d...
2012 Oct 08
0
Mininum number of resamples required to do BCa bootstrap?
...:
> N <- 25
> s <- rlnorm(N, 0, 1)
> require("boot")
Loading required package: boot
> v <- NULL # hold sample variance estimates
> i <- 1
> v[i] <- var(s) # get sample variance
> nReal <- 10
> varf <- function (x,i) { var(x[i]) }
> fabc <- function (x, w) { # weighted average (biased) variance
+ sum(x^2 * w) / sum(w) - (sum(x * w) / sum(w))^2
+ }
> p <- c(.25, .75, .2, .8, .15, .85, .1, .9, .05, .95, .025, .975,
.005, .995)
> cl <- c(0.5, 0.6, 0.7, 0.8, 0.9, 0.95, 0.99)
> b <- boot(s, varf, R = nReal) #...
2012 Oct 02
0
Possible error in BCa method for confidence intervals in package 'boot'
...:
> N <- 25
> s <- rlnorm(N, 0, 1)
> require("boot")
Loading required package: boot
> v <- NULL # hold sample variance estimates
> i <- 1
> v[i] <- var(s) # get sample variance
> nReal <- 10
> varf <- function (x,i) { var(x[i]) }
> fabc <- function (x, w) { # weighted average (biased) variance
+ sum(x^2 * w) / sum(w) - (sum(x * w) / sum(w))^2
+ }
> p <- c(.25, .75, .2, .8, .15, .85, .1, .9, .05, .95, .025, .975,
.005, .995)
> cl <- c(0.5, 0.6, 0.7, 0.8, 0.9, 0.95, 0.99)
> b <- boot(s, varf, R = nReal) #...