Nothing
cos_sim_calc_boot = function(data,indices){d = t(data[indices,]);cossimdata = NULL; for (i in 1:(nrow(d) - 1))
{for (j in (i+1):nrow(d))
{ tempa = sum(d[i,]*d[j,]) /(sqrt(sum(d[i,]^2))* sqrt(sum(d[j,]^2))) ; cossimdata = c(cossimdata,tempa)}
}
return(cossimdata)}
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