funtimes (version 2.2)

CExpandSlideCluster: Slide-level time series cluster expansion

Description

This is an auxillary function to expand a slide-level time series cluster, based on Ciampi et al. (2010).

Usage

CExpandSlideCluster(u, Xuncl, Alpha, Beta, Delta, Theta)

Arguments

u

a time series vector --- a seed to expand the cluster.

Xuncl

a time series vector (of the same length as u) or a matrix (time series in columns) containing unclustered time series.

Alpha

lower limit of the time series domain.

Beta

upper limit of the time series domain.

Delta

closeness parameter, a real value in [0,1].

Theta

connectivity parameter, a real value in [0,1].

Value

Xuncl should be included in the slide-level cluster with u.

References

Ciampi, A., Appice, A. and Malerba, D. (2010) Discovering trend-based clusters in spatially distributed data streams. In International Workshop of Mining Ubiquitous and Social Environments, pages 107--122.

See Also

CNeighbor, CHomogeneity, CSlideCluster, CExpandWindowCluster, CWindowCluster.

Examples

set.seed(123)
u <- rnorm(10)
Xuncl <- matrix(rt(50, 5), 10, 5)
Alpha <- min(cbind(u,Xuncl))
Beta <- max(cbind(u,Xuncl))
CExpandSlideCluster(u, Xuncl, Alpha, Beta, Delta=0.15, Theta=0.8)