search for: sum_x

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2011 Dec 12
0
Rsolnp package: warning messages
...imizes the objective. therefore the original minus sign is not used obj=function(x){ all1=sum(mat%*%x) Hp=0 for (j in 1:BR){ p_b=mat[j,]%*%x/all1 Hp=Hp+p_b*log(p_b)*br[j] } return(Hp) } # the equality constraint function: equal1=function(x){ all2=sum(mat%*%x) sum_pterm=sum(mat[1:N,]%*%x/all2) sum_x=sum(x) return(c(sum_pterm,sum_x)) } # the right hand side for the constraint eqB=c(1,budget) # the inequality function inequal1=function(x){ all3=sum(mat%*%x) p_b=mat[1:BR,]%*%x/all3 return(as.vector(p_b)) } #the lower limit for inequalities ineqLB=rep(0.00001,BR) #the upper limit for the ine...
2008 Mar 10
0
build.mim() from the minet package
...ion build.mim() from the minet package: > build.mim(myData, estimator="empirical") and I have two questions. 1.) The estimator "empirical" computes the entropy of the empirical probability distribution. This probably means it is using this definition of the entropy: H = sum_x sum_y p(x,y)* log( p(x,y)/ (p(x)*p(x)) ). Is this correct? 2.) Which is basis is used for the log? Thanks a lot for your in advance. Bettina Keller
2005 Apr 18
4
longer object length, is not a multiple of shorter object length in: kappa * gcounts
Hi, I was using a density estimation function as follows: > est <- KernSmooth::bkde(x3, bandwidth=10) When setting bandwidth less than 5, I got the error "longer object length, is not a multiple of shorter object length in: kappa * gcounts ". I wonder if there is anybody who can explain the error for me? Thanks! Hui