##### Generate Targets
#' @export
#' @importFrom lsa cosine
choose.target <- function(x,lower,upper,n,tvectors=tvectors,
breakdown=TRUE){
if(class(tvectors) == "matrix"){
allwords <- vector(length=nrow(tvectors))
if(breakdown==TRUE){satz1 <- breakdown(x)}
if(breakdown==FALSE){satz1 <- x}
satz1split <- strsplit(satz1,split=" ")[[1]]
used1 <- satz1split[satz1split %in% rownames(tvectors)]
if(length(used1)==0){(warning("no element of x found in rownames(tvectors)"))
return(NA)}
if(length(used1) >1){satz1vec <- colSums(tvectors[used1,])}
if(length(used1)==1){satz1vec <- tvectors[used1,]}
for(i in 1:nrow(tvectors)){
allwords[i] <- cosine(satz1vec,tvectors[i,])
}
names(allwords) <- rownames(tvectors)
a <- sample(allwords[allwords >= lower & allwords <= upper])[1:n]
print(a)
}else{warning("tvectors must be a matrix!")}
}
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