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initSA<- function(states,inputSymbols,outputSymbols,emissionProb,transitionProb){
if(is.vector(states)&&is.vector(inputSymbols)&&is.vector(outputSymbols)&&is.matrix(emissionProb)&&is.matrix(transitionProb))
{
states<-as.character(states)
csum<-0
colnames(transitionProb) <- states[1:ncol(transitionProb)]
rownames(transitionProb) <- states[1:nrow(transitionProb)]
for(i in 1:nrow(transitionProb)){
if( sum(transitionProb[,i]) !=1){
return (stop("sum of transiton probability must be equal to 1"))
}
}
mnames<-vector()
c<-1
for(i in 1:length(inputSymbols)){
for(j in 1:length(states)){
mnames[c]<-paste(toString(inputSymbols[i]),toString(states[j]), sep=',')
c<-c+1
}
}
csum<-0
colnames(emissionProb) <- mnames[1:ncol(emissionProb)]
rownames(emissionProb) <- outputSymbols[1:nrow(emissionProb)]
for(j in 1:nrow(emissionProb)){
if( sum(emissionProb[,j]) !=1){
return (stop("sum of emision probability must be equal to 1"))
}
}
return(list("states"=states,"inputSymbols"=inputSymbols,"outputSymbols"=outputSymbols,"transitionProb"=transitionProb,"emissionProb"=emissionProb))
}else {
return(stop("Invalid arguments."))
}
}
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