stray_scores: Stray scores

In weird: Functions and Data Sets for "That's Weird: Anomaly Detection Using R" by Rob J Hyndman

Stray scores

Description

Compute stray scores indicating how anomalous each observation is.

Usage

stray_scores(y, ...)

Arguments

y	A vector, matrix, or data frame consisting of numerical variables.
...	Other arguments are passed to find_HDoutliers.

Value

Numerical vector containing stray scores.

Author(s)

Rob J Hyndman

References

P D Talagala, R J Hyndman and K Smith-Miles (2021) Anomaly detection in high-dimensional data, Journal of Computational and Graphical Statistics, 30(2), 360-374.

Examples

# Univariate data
y <- c(6, rnorm(49))
scores <- stray_scores(y)
threshold <- stray::find_threshold(scores, alpha = 0.01, outtail = "max", p = 0.5, tn = 50)
which(scores > threshold)

weird documentation built on Jan. 27, 2026, 9:06 a.m.