des-simple

Input Stack:

expr: TimeSeriesExpr

⇨

Output Stack:

TimeSeriesExpr

Apply double exponential smoothing using simple default parameters. This is a convenience operator that provides basic DES functionality without requiring parameter tuning, though the default values may not be optimal for all use cases.

Warning

Oscillation Risk: The default values used by this operation are prone to wild oscillations and may not provide stable predictions. See the DES recommended values documentation for better parameter choices.

Parameters¶

expr: The time series expression to apply double exponential smoothing to

Default Configuration¶

This operator is equivalent to calling :des with these default parameters:

Training: 10 data points
Alpha: 0.1 (level smoothing factor)
Beta: 0.5 (trend smoothing factor)

Examples¶

Basic DES smoothing with default parameters:

Before	After

name,sps,:eq, :sum	name,sps,:eq, :sum, :des-simple

Equivalent Expression¶

This convenience operator is shorthand for:

# These expressions are equivalent:
name,cpu,:eq,:sum,:des-simple
name,cpu,:eq,:sum,10,0.1,0.5,:des

:des - Full double exponential smoothing with custom parameters
:sdes-simple - Sliding DES equivalent (recommended alternative)
:des-fast - DES helper for quick adaptation