What is the difference between SAX and PAA?

Paa (Piecewise Aggregate Approximation)

Sax (Symbolic Aggregate approXimation) 

Please gimmie info 

1 Answer

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  • Jim
    Lv 7
    2 months ago

    PAA (Piecewise Aggregate Approximation) corresponds to downsampling of the original time series and, in each segment (segments have fixed size), the mean value is retained. SAX (Symbolic Aggregate approXimation) builds upon PAA by quantizing the mean value.

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