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How to calculate mean or variance in a string ?

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Mani
Mani el 26 de Ag. de 2014
Editada: Andrew Reibold el 28 de Ag. de 2014
Hi, I have a jumbled text and i wish to straighten it out using machine learning . I wanted to calculate the variance of the jumbled text . Can anyone suggest me a method on how to do it ?
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Salaheddin Hosseinzadeh
Salaheddin Hosseinzadeh el 26 de Ag. de 2014
Hi Mani,
I've no idea how to do that.
Do yourself a favor, add this details to your question, because I'm going to remove my answer so other ppl notice your question is left unanswered.
Thanks.
Star Strider
Star Strider el 26 de Ag. de 2014
What do you mean by ‘jumbled text’? Is it a replacement cipher, with one letter replacing another repeatedly ( i.e. a=m, g=b, q=e ) or some such?

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Andrew Reibold
Andrew Reibold el 26 de Ag. de 2014
Editada: Andrew Reibold el 28 de Ag. de 2014
You can convert to ascii equivalent, then find variance.
jumble_text = 'alskdjbfalksjbdf'
ascii_text = double(jumble_text)
mean_text = mean(ascii_text)
squared_dif = (ascii_text - mean_text).^2
variance = mean(squared_dif)

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