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I have been reading many articles on Metaphone 3 last couple of days. I saw Metaphone 3 also returns 2 key for each word just like Double Metaphone. Actually, I am confused to figure out what is the core difference between Double Metaphone and Metaphone 3? (Obviously, there is something special about Metaphone 3 since people buying it.) Thanks.

desertnaut
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Rahat Ahmed
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Metaphone 3 was developed against a test harness of over a hundred thousand prepared correct encodings and is therefore far more accurate and detailed than any other phonetic encoding algorithm for English by a long shot

lawrence philips
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    It would be amazing if you could share this test file so we can run these benchmarks ourselves. I know this is a private curated list, but the lack of general usage of Metaphone 3 might improve if it's able to perform. – stan Sep 27 '19 at 21:33
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1.Accuracy: Metaphone 3 is generally considered to be more accurate than Double Metaphone, especially for non-English words and names. Metaphone 3 has a higher precision rate and can handle a wider range of languages and dialects.

2.Output: Metaphone 3 generates a primary and secondary code for a given word, while Double Metaphone generates only a primary code. This means that Metaphone 3 can provide more detailed phonetic information about a word, which can be useful in certain applications.

3.Implementation: Metaphone 3 is a more complex algorithm than Double Metaphone and requires more computational resources. It also has more rules and exceptions to handle different languages and dialects. Double Metaphone is a simpler algorithm that can be more easily implemented in programming languages.

Daniel Giftson
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