A4Benchmark: Yahoo Webscope S5 – A4 Benchmark (Synthetic with Anomalies...

In harbinger: A Unified Time Series Event Detection Framework

Yahoo Webscope S5 – A4 Benchmark (Synthetic with Anomalies and CPs)

Description

Part of the Yahoo Webscope S5 dataset. A4 contains synthetic time series with labeled anomalies and change points. Labels available: Yes.

Usage

data(A4Benchmark)

Format

A list of time series.

Details

This package ships a mini version of the dataset. Use loadfulldata() to download and load the full dataset from the URL stored in attr(url).

Source

\Sexpr[results=rd]{tools:::Rd_expr_doi("10.1371/journal.pone.0262463")}

References

Yoshihara K, Takahashi K (2022) A simple method for unsupervised anomaly detection: An application to Web time series data. PLoS ONE 17(1).

Truong, C., Oudre, L., & Vayatis, N. (2020). Selective review of change point detection methods. Signal Processing, 167, 107299.

Examples

data(A4Benchmark)
s <- A4Benchmark[[1]]
mean(s$event)  # proportion of anomalous or change-point timestamps

harbinger documentation built on Feb. 11, 2026, 9:06 a.m.