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daenz
on July 6, 2013
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Google Correlate - Draw
The whitepaper describes an approximate nearest neighbor algorithm, but I thought this would use some form of signal decomposition...Discrete Cosine Transform or Fourier Transform.
oakwhiz
on July 7, 2013
[–]
If I recall correctly, that only works on periodic signals, and not all the Google keyword trends are periodic.
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