Hey All, I'm trying to find a way to calculate the total number of matching words in a bunch of strings. I have a database with thousands of strings (and unique ID nums), and I can't just do the obvious brute force solution, as it takes WAY too long (see below). Basically I wanna end up with an array that tells me which strings have high probabilities of being the same string (perhaps the same information, told multiple ways). EX: 
The quick brown fox jumped over the lazy dogs.
vs.
The quick brown dogs jumped over the lazy fox.

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Both strings say the same thing, but they would not generate a normal ($string1 eq $string2) match. The trick is, I also want to be told that I have a 'near' match on a string (perhaps "the very quick brown...") too. The data currently exists in a two demsional array: 
while (@row=$sth->fetchrow_array())
 {
 $big_deal[$count][0]= $row[0];    # Assign Unique ID to element 0
 $big_deal[$count][1]= $row[1];    # Assign string to element 1
 }
print ($#big_deal+1) . " records found.<br>\n";

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I played with this all morning, before it dawned on me that this might be something someone else has done, or would know of a better way to do then I. My solution currently involves six loops (shudder) and a search of only 200 strings returns a result in just under two hours (on a decently fast Xserve). Any advice appriciated!

In reply to calculate matching words/sentence by anocelot

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