Here's a pretty simple way to score the matching. Convert the array of search terms to a regex alternation and count the number of matches for each datum: 

my @guesses = ('Place De La Gare', 'Rennes');

my $grei = do {  # this case insensitive re added
    local $" = '|';
    qr/@{[map {quotemeta} @guesses]}/i;
};

my $gre = do {
    local $" = '|';
    qr/@{[map {quotemeta} @guesses]}/;
};

my %score;
for (@data) {
    $score{$_} = () = m/($grei)/g;   # edited.
#   $score{$_} += () = m/($gre)/g;   # uncomment to give extra
                                     # credit for exact match
}
# sort keys by value or grep for threshold to pick best matches

[download]

Update: Case insensitivity was being overruled by the compiled $gre. Repaired. Got rid of non-capture grouping and added quotemeta to defang special characters in the data. More: Added the '()=" trick to force array context - that fixes the counts.

After Compline,
Zaxo

In reply to Re: Guessing/Ordering Partial Data by Zaxo
in thread Guessing/Ordering Partial Data by ropey

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