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HCL Opportunity Detect User Guide
Trend, Spike, and Exceeded Standard Deviation components
Trend components detect changes in activity measured over defined periods of time. Before you can create a trend component, your trigger system must include a Container or Select component that the trend can use as a data source.
The Exceeded Standard Deviations component
The Exceeded Standard Deviations (ESD) component compares the value in a current time period to the average of that value over a historical time period.

The Exceeded Standard Deviations component

The Exceeded Standard Deviations (ESD) component compares the value in a current time period to the average of that value over a historical time period.

The comparison is made in terms of a specified number of standard deviations, with the standard deviation itself being based on the historical assemblage of values. An ESD component detects activity that exceeds the specified number of (positive or negative) standard deviations over specific time period.

The ESD component allows the detection of a jump or drop that is significant not just in its size but also in comparison to how much the value has typically jumped or dropped for this customer in the past.