"min() is a subroutine that I did not include. It does exactly what it sounds like, returns the minimum of two values in a list."

I did consider that might have been something like that (e.g. similar to List::Util's min() function); however, you're only providing a single value after min( in the code you posted.

Here's an example of how ${$vit_dist[$i-1]}[$j]+${$distance_mat[$i]}[$j] might be evaluated: 

$ perl -Mstrict -Mwarnings -le '
    my (@vit_dist, @distance_mat);
    $vit_dist[0][0] = 30;
    $distance_mat[1][0] = 12;
    my ($i, $j) = (1, 0);

    print ${$vit_dist[$i-1]}[$j]+${$distance_mat[$i]}[$j];
'
42

[download]

Perhaps you need a comma instead of a plus: 

min(${$vit_dist[$i-1]}[$j], ${$distance_mat[$i]}[$j])

[download]

A liberalsplinklingofwhitespace may improve the readability of your code and reduce errors. :-)

-- Ken

In reply to Re^3: Viterbi application by kcott
in thread Viterbi application by azheid

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