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Thread: Levenshtein

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Posted: 2010-01-10 08:22
I have read the Levenshtein article but am confused as to it's usfulness in code training.

Please explaine ?


Posted: 2010-01-10 10:47
What article? Be explicit please.

The Levenshtein distance is the number of changes required to transform one morse character to the other. Hence h and 5 has a small one and 5 and T is a large one.

This means that you can easier hear the difference between T and 5 than between h and 5.

This means that when you have difficulties in detecting the difference of your characterset during your learning proces, you are better off with exercising the set t and h than 5 and h.

Still much better is not to bother abt Levenshtein, but just to exercise till you copy a small set of 2 characters 90% solid, and after the add a third character.


Posted: 2010-01-10 20:36
In the scoring portion of the course,click "Levenshtein Score" and you will get Wikipedia's explaination.


Posted: 2010-01-10 20:50
The accuracy is calculated by two different methods. First, comparing group by group, splitting them up at every whitespace-character. Then by the Levenshtein distance. In case a space between two groups is omitted somewhere, the first checking algorithm fails. That's why the Levenshtein distance is used as a fallback method of determining the error rate.

In every case, the better of the two calculated accuracy values is used for the statistics.


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