> ## Documentation Index
> Fetch the complete documentation index at: https://docs.startree.ai/llms.txt
> Use this file to discover all available pages before exploring further.

# EVENTS

Adds an `EVENT` label to anomalies that happen during an event. Events are provided by an [eventFetcher](/thirdeye/operators/event-fetcher). Used to filter anomalies that happen on holidays.

## Inputs

The info source is the output of the detector. Labels are applied to the anomalies of this input.

```json theme={null}
{
  "sourcePlanNode": "anomalyDetector"
}
```

The output of an [eventFetcher](/thirdeye/operators/event-fetcher). It contains the events to use for labelling.

```json theme={null}
{
  "targetProperty": "current_events",
  "sourcePlanNode": "eventsDataFetcher",
  "sourceProperty": "events"
}
```

## Parameters

| name                            | description                                                                                                                                                                                                                                                        | default value     |
| ------------------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ | ----------------- |
| `component.beforeHolidayMargin` | A period in ISO-8601 format that corresponds to a period that is also impacted by the event. Eg if beforeEventMargin is P1D, if event happens on \[Dec 24 0:00, Dec 25 0:00\[, the label will be applied to anomalies happening on \[Dec 23 0:00 and Dec 25 0:00\[ | `P0D` (no margin) |
| `component.afterHolidayMargin`  | Same as `beforeHolidayMargin` at the end of the event.                                                                                                                                                                                                             | `P0D` (no margin) |

## Example

```json theme={null}
{
  "name": "root",
  "type": "PostProcessor",
  "params": {
    "type": "EVENT",
    "component.ignore": "true",
    "component.beforeHolidayMargin": "PT4H",
    "component.afterHolidayMargin": "PT4H"
  },
  "inputs": [
    {
      "sourcePlanNode": "anomalyDetector"
    },
    {
      "targetProperty": "current_events",
      "sourcePlanNode": "eventsDataFetcher",
      "sourceProperty": "events"
    }
  ]
}
```

[iso-8601](https://en.wikipedia.org/wiki/ISO_8601#Durations)