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Anomaly Detection Benchmark

Numenta Anomaly Benchmark (NAB) screenshot

Sensors and data streams are proliferating as the Internet of Things vision becomes realized. However, using the data from these sensors is not so easy. Specifically, being able to identify anomalies in streaming data is surprisingly difficult. Most techniques are a form of thresholds, i.e. predetermined limits that must be set to notify abnormalities. However, thresholds have some glaring weaknesses, including often finding a problem after it has happened, not before, and not adapting to new states, such that false positives can crowd out the important signal.

We created the Numenta Anomaly Benchmark (NAB) in order to be able to measure and compare results from algorithms designed to find anomalies in streaming data. NAB is an open source framework consisting of:

  • A dataset with real-world, labeled data files
  • A scoring mechanism that rewards early detection and on-line learning