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Topic2Music
I have taken 10 popular artists and calculated the correlation between them, based on the vocabulary, words and the implicit topic of their lyrics.
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The numbers are between -1 and 1, when 1 is complete identity between the artists lyrics, and -1 is the opposite.
As you can see, there is a total identity between an artist and himself.
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Also, as can be expected, there is a very high correlation between artists like 50 Cent, 2pac and Eminem, but very low correlation between Justin Bieber and Metallica.
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Interesting to see, that in the current data set, Aerosmith and Metallica have both a low correlation with every other artist, even between themselves - something that can be inferred as uniqueness.
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