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AnomalyXL

Long-context multivariate time-series anomaly benchmark, in two partitions:

  • MCQ: multiple-choice questions over six task categories (presence, start time, categorization, magnitude, identification, indicator), projected from the Localize partition so paired rows share the same underlying series. Gold answers are option text.
  • Localize: open evidence-grounded questions (localize, classify-with-evidence, measure magnitude, localize-all-channels, lead/lag) with structured JSON golds scored by IoU / tolerance-banded metrics.

Series are stored per-row (channel_names / channel_values) with injection ground truth (injection_* columns). test is the seed-42 release grid (800 Localize / 248 MCQ rows); train/validation are the seed-100 training grids. Row ids are stable join keys across partitions (paired__<localize id>__<template> links MCQ rows to their sources).

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