Complexity-Invariant Distance Measure For Time Series
Computes the distance based on the Euclidean distance corrected by the complexity estimation of the series.
Numeric vector containing the first of the two time series.
Numeric vector containing the second of the two time series.
This distance is defined
CID(x,y) = ED(x,y) \times CF(x,y)
where CF(x,y) is a complexity correction factor defined as:
max(CE(x), CE(y)) / min(CE(x), CE(y))
and CE(x) is a compexity estimate of a time series x.
diss.CID therefore increases the distance between series with different complexities. If the series have the same complexity estimate, the distance defenerates Euclidean distance. The complexity is defined in
CE(x) = sqrt( sum ( diff(x)^2 ) )
The computed dissimilarity.
Pablo Montero Manso, José Antonio Vilar.
Batista, G. E., Wang, X., & Keogh, E. J. (2011). A Complexity-Invariant Distance Measure for Time Series. In SDM (Vol. 31, p. 32).
Montero, P and Vilar, J.A. (2014) TSclust: An R Package for Time Series Clustering. Journal of Statistical Software, 62(1), 1-43. http://www.jstatsoft.org/v62/i01/.
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