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Comparing Songs
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| · | Direct Comparison - an exact match is sought. This comparison is not case-sensitive.
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| · | Heuristic Comparison - the program uses so-called heuristic techniques to look for similarity between songs. The number and lengths of each word and the number of lines in the song are combined into a set of numerical scores, which are cross-checked against scores from other songs. This helps identify songs with minor differences, such as spelling changes, but this may produce false positive matches.
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| · | Title - titles are cross-checked for possible duplication, using both direct and heuristic methods.
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| · | Contents - Song lyrics are cross-checked for possible duplication, using both direct and heuristic methods. Lines of chords are ignored during the content checking, so that songs in different keys will still show matches. Also, the heuristic matching will identify possible matches even when spelling changes or other minor changes have been made.
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