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Data cleaning: Difference between revisions
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→Outlier / Anomaly detection
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== Outlier / Anomaly detection == | == Outlier / Anomaly detection == | ||
Anomaly detection | Anomaly detection of numeric data | ||
* Median | * Median | ||
* Range Checks | * Range Checks | ||
* All values is event | |||
* The values are the same even the column is totally different | |||
Anomaly detection of categorical data (qualitative variable) | |||
* Normal distribution e.g. The interest of audiences should be very different NOT coherent | |||
Anomaly detection for time series data | Anomaly detection for time series data | ||