# AlertThresholdAlgo

Threshold determination algorithms for alert rules.

Defines how alert thresholds are calculated - either manually specified or automatically computed based on historical data patterns.

## MANUAL

User-specified static thresholds. Provides full control but requires domain knowledge to set appropriately.

## STD\_DEV\_AUTO\_THRESHOLD

Automatic thresholds based on standard deviation. Calculates thresholds as mean ± (multiplier × std\_dev) from historical data. Adapts to data patterns automatically.

## Example

```python
# Manual threshold - user knows the acceptable drift limit
manual_alert = AlertRule(
        threshold_type=AlertThresholdAlgo.MANUAL,
        critical_threshold=0.1,
        warning_threshold=0.05
    )

    # Auto threshold - let system learn from historical patterns
    auto_alert = AlertRule(
            threshold_type=AlertThresholdAlgo.STD_DEV_AUTO_THRESHOLD,
            auto_threshold_params={
                    'warning_multiplier': 2.0,  # 2 std devs for warning
                    'critical_multiplier': 3.0  # 3 std devs for critical
                }
            )
```

## MANUAL *= 'manual'*

## STD\_DEV\_AUTO\_THRESHOLD *= 'standard\_deviation\_auto\_threshold'*

## **str**()

Return the string value of the enum.

## Returns

The enum's string value for serialization and display.

**Return type:** str

## Example

```python
algo = AlertThresholdAlgo.MANUAL
str(algo)
'manual'
```