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lucy
2009 Jun 16
0
Help implementing a simple Python port
...ion(i) {
sum(unlist(lapply(b,function (j) {
sum((d[j]+diffs[j,i])*freqs[j,i])/rowSums(freqs)[i] }))) })
names(pred.out)=colnames(tr.set)
return(pred.out) }
# end function
# test 1, using example from [1]
john=c(item1=5, item2=3, item3=2)
mark=c(item1=3, item2=4, item3=NA)
tr.set1=rbind(john,mark)
lucy1=c(item1=NA, item2=2, item3=5)
pred(tr.set1,lucy1) ## item1=4.33 --> correct
# test 2, using example from [2]
alice=c(squid=1.0, octopus=0.2, cuttlefish=0.5, nautilus=NA)
bob=c(squid=1.0, octopus=0.5, cuttlefish=NA, nautilus=0.2)
carole=c(squid=0.2, octopus=1.0, cuttlefish=0.4, nautilus=0.4)...