harbinger (version 1.2.747)

trans_sax: SAX transformation

Description

Symbolic Aggregate approXimation (SAX) discretization of a numeric time series. The series is z-normalized, quantile-binned, and mapped to an alphabet of size alpha.

Usage

trans_sax(alpha)

Value

A trans_sax transformer object.

Arguments

alpha

Integer. Alphabet size (2–26).

References

• Lin J, Keogh E, Lonardi S, Chiu B (2007). A symbolic representation of time series, with implications for streaming algorithms. Data Mining and Knowledge Discovery 15, 107–144.

Examples

library(daltoolbox)
vector <- 1:52
model <- trans_sax(alpha = 26)
model <- fit(model, vector)
xvector <- transform(model, vector)
print(xvector)