mass_pre {tsmp} | R Documentation |
Precomputes several values used on MASS
Description
Precomputes several values used on MASS
Usage
mass_pre(data, query = NULL, window_size)
Arguments
data |
a |
query |
a |
window_size |
an |
Value
Returns window_size
, data_fft
, data_size
, data_mean
, data_sd
, query_mean
and query_sd
.
References
Abdullah Mueen, Yan Zhu, Michael Yeh, Kaveh Kamgar, Krishnamurthy Viswanathan, Chetan Kumar Gupta and Eamonn Keogh (2015), The Fastest Similarity Search Algorithm for Time Series Subsequences under Euclidean Distance.
Website: https://www.cs.unm.edu/~mueen/FastestSimilaritySearch.html
See Also
mass_v2()
, mass_v3()
for using precomputed values.
Examples
w <- mp_toy_data$sub_len
ref_data <- mp_toy_data$data[, 1]
query_data <- mp_toy_data$data[, 1]
pre <- tsmp:::mass_pre(ref_data, query_data, w)
dp <- list()
for (i in 1:(pre$data_size - w + 1)) {
dp[[i]] <- tsmp:::mass_v2(
query_data[i:(i - 1 + w)], pre$window_size, pre$data_fft, pre$data_size,
pre$data_mean, pre$data_sd, pre$query_mean[i], pre$query_sd[i]
)
}
[Package tsmp version 0.4.15 Index]