[Solved] The edit distance satisfies the axioms of a metric when the costs are non-negative.

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Q.	The edit distance satisfies the axioms of a metric when the costs are non-negative.
A.	true
B.	false
Answer» A. true
Explanation: d(s,s) = 0, since each string can be transformed into itself without any change. d(s1, s2) > 0 when s1 != s2, since the transformation would require at least one operation.

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