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2016 Apr 06
0
R-dvel [robustness Simulation study of 2 sample test on several combination of factors ]
...4,6,8,10,12,14) # this number is needed below nsds<-length(sds) set.seed(8) #number of simulations nSims<-10000 #set significance level,alpha for the whole simulatio alpha<-0.05 #set empty vector of length no.of _calculations_ to store p-values # Note: you have 54 calculations, not 10000 ncalcs<-dim(sample_sizes)[2]*nsds t_equal <-c(rep(0,length=ncalcs)) t_unequal <-c(rep(0,length=ncalcs)) mann <-c(rep(0,length=ncalcs)) #set up matrix for storing data from the vectors # but you do want 10000 replications of each calculation matrix_Equal<-matrix(rep(NA,ncalcs*nSims),nrow=nS...
2016 Apr 06
0
R-dvel [robustness Simulation study of 2 sample test on several combination of factors ]
...ds<-length(sds) > set.seed(8) > > #number of simulations > nSims<-10000 > #set significance level,alpha for the whole simulatio > alpha<-0.05 > > #set empty vector of length no.of _calculations_ to store p-values > # Note: you have 54 calculations, not 10000 > ncalcs<-dim(sample_sizes)[2]*nsds > t_equal <-c(rep(0,length=ncalcs)) > t_unequal <-c(rep(0,length=ncalcs)) > mann <-c(rep(0,length=ncalcs)) > > #set up matrix for storing data from the vectors > # but you do want 10000 replications of each calculation > matrix_Equal<-m...
2002 Oct 17
1
underflow handling in besselK (PR#2179)
The besselK() function knows about overflows/underflows internally; there is a constant xmax_BESS_K in src/nmath/bessel.h (and referred to only in bessel_k.c), equal to 705.342, which is checked if expon.scaled is FALSE. (The equivalent number for bessel_i.c is 709, defined as exparg_BESS in bessel.h.) However, besselK(x) silently returns +Inf if x>705.342. This behavior is reasonable for