Description Usage Arguments Details Value Author(s) References See Also Examples
Function to perform outlier removal from sliding windows of data.
The outliers_bp()
function removes windows with extreme values
using a method based on Box plots for detecting outliers.
1 | outliers_bp(data, alpha = 1.5)
|
data |
A numeric matrix with sliding windows of time series data
as returned by |
alpha |
The multiplier for the interquartile range used as base for outlier removal.
The default is set to |
The method applied prune any value smaller than the first quartile minus 1.5 times the interquartile range, and also any value larger than the third quartile plus 1.5 times the interquartile range, that is, all the values that are not in the range [Q1-1.5xIQR, Q3+1.5xIQR] are considered outliers and are consequently removed.
Same as data
with outliers removed.
Rebecca Pontes Salles
E. Ogasawara, L. C. Martinez, D. De Oliveira, G. Zimbrao, G. L. Pappa, and M. Mattoso, 2010, Adaptive Normalization: A novel data normalization approach for non-stationary time series, Proceedings of the International Joint Conference on Neural Networks.
Other transformation methods:
Diff()
,
LogT()
,
WaveletT()
,
emd()
,
mas()
,
mlm_io()
,
pct()
,
train_test_subset()
1 2 3 |
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